Split tokens package into erc20 and erc721

104 files changed, 729 insertions, 878 deletions

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0ccb8a200..cd6065fb9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -43,10 +43,12 @@ jobs:
                       - repo-{{ .Environment.CIRCLE_SHA1 }}
             - run: yarn wsrun test:circleci @0x/contracts-multisig
             - run: yarn wsrun test:circleci @0x/contracts-utils
-            - run: yarn wsrun test:circleci @0x/contracts-libs
-            - run: yarn wsrun test:circleci @0x/contracts-tokens
+            - run: yarn wsrun test:circleci @0x/contracts-exchange-libs
+            - run: yarn wsrun test:circleci @0x/contracts-erc20
+            - run: yarn wsrun test:circleci @0x/contracts-erc721
             - run: yarn wsrun test:circleci @0x/contracts-extensions
-            - run: yarn wsrun test:circleci @0x/contracts-protocol
+            - run: yarn wsrun test:circleci @0x/contracts-asset-proxy
+            - run: yarn wsrun test:circleci @0x/contracts-exchange
     test-contracts-geth:
         docker:
             - image: circleci/node:9-browsers
@@ -59,11 +61,13 @@ jobs:
             # HACK(albrow): we need to sleep 10 seconds to ensure the devnet is
             # initialized
             - run: sleep 10 && TEST_PROVIDER=geth yarn wsrun test @0x/contracts-multisig
-            - run: TEST_PROVIDER=geth yarn wsrun test @0x/contracts-utils
-            - run: TEST_PROVIDER=geth yarn wsrun test @0x/contracts-exchange-libs
-            - run: TEST_PROVIDER=geth yarn wsrun test @0x/contracts-tokens
-            - run: TEST_PROVIDER=geth yarn wsrun test @0x/contracts-extensions
-            - run: TEST_PROVIDER=geth yarn wsrun test @0x/contracts-protocol
+            - run: yarn wsrun test:circleci @0x/contracts-utils
+            - run: yarn wsrun test:circleci @0x/contracts-exchange-libs
+            - run: yarn wsrun test:circleci @0x/contracts-erc20
+            - run: yarn wsrun test:circleci @0x/contracts-erc721
+            - run: yarn wsrun test:circleci @0x/contracts-extensions
+            - run: yarn wsrun test:circleci @0x/contracts-asset-proxy
+            - run: yarn wsrun test:circleci @0x/contracts-exchange
     test-publish:
         resource_class: medium+
         docker:
diff --git a/.gitignore b/.gitignore
index 5a7d703cc..997f8b2b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -88,7 +88,8 @@ contracts/asset-proxy/generated-artifacts/
 contracts/multisig/generated-artifacts/
 contracts/utils/generated-artifacts/
 contracts/exchange-libs/generated-artifacts/
-contracts/tokens/generated-artifacts/
+contracts/erc20/generated-artifacts/
+contracts/erc721/generated-artifacts/
 contracts/extensions/generated-artifacts/
 packages/sol-tracing-utils/test/fixtures/artifacts/
 packages/metacoin/artifacts/
@@ -100,7 +101,8 @@ contracts/asset-proxy/generated-wrappers/
 contracts/multisig/generated-wrappers/
 contracts/utils/generated-wrappers/
 contracts/exchange-libs/generated-wrappers/
-contracts/tokens/generated-wrappers/
+contracts/erc20/generated-wrappers/
+contracts/erc721/generated-wrappers/
 contracts/extensions/generated-wrappers/
 packages/metacoin/src/contract_wrappers
 
diff --git a/.prettierignore b/.prettierignore
index 38206b5cd..00d36575c 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -10,8 +10,10 @@ lib
 /contracts/utils/generated-artifacts
 /contracts/exchange-libs/generated-wrappers
 /contracts/exchange-libs/generated-artifacts
-/contracts/tokens/generated-wrappers
-/contracts/tokens/generated-artifacts
+/contracts/erc20/generated-wrappers
+/contracts/erc20/generated-artifacts
+/contracts/erc721/generated-wrappers
+/contracts/erc721/generated-artifacts
 /contracts/extensions/generated-wrappers
 /contracts/extensions/generated-artifacts
 /packages/abi-gen-wrappers/src/generated-wrappers
diff --git a/contracts/asset-proxy/package.json b/contracts/asset-proxy/package.json
index 44fdce395..258cf4629 100644
--- a/contracts/asset-proxy/package.json
+++ b/contracts/asset-proxy/package.json
@@ -69,9 +69,9 @@
     },
     "dependencies": {
         "@0x/base-contract": "^3.0.13",
-        "@0x/contracts-interfaces": "^1.0.6",
         "@0x/contracts-test-utils": "^2.0.1",
-        "@0x/contracts-tokens": "^1.0.6",
+        "@0x/contracts-erc20": "^1.0.6",
+        "@0x/contracts-erc721": "^1.0.6",
         "@0x/contracts-utils": "^1.0.6",
         "@0x/order-utils": "^3.1.2",
         "@0x/types": "^1.5.2",
diff --git a/contracts/asset-proxy/test/authorizable.ts b/contracts/asset-proxy/test/authorizable.ts
index 23fcf0931..087121235 100644
--- a/contracts/asset-proxy/test/authorizable.ts
+++ b/contracts/asset-proxy/test/authorizable.ts
@@ -12,8 +12,7 @@ import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { MixinAuthorizableContract } from '../generated-wrappers/mixin_authorizable';
-import { artifacts } from '../src/artifacts';
+import { artifacts, MixinAuthorizableContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/asset-proxy/test/proxies.ts b/contracts/asset-proxy/test/proxies.ts
index 44ab77087..797787135 100644
--- a/contracts/asset-proxy/test/proxies.ts
+++ b/contracts/asset-proxy/test/proxies.ts
@@ -1,4 +1,15 @@
-import { artifacts as interfacesArtifacts, IAssetDataContract, IAssetProxyContract } from '@0x/contracts-interfaces';
+import {
+    artifacts as erc20Artifacts,
+    DummyERC20TokenContract,
+    DummyERC20TokenTransferEventArgs,
+    DummyMultipleReturnERC20TokenContract,
+    DummyNoReturnERC20TokenContract,
+} from '@0x/contracts-erc20';
+import {
+    artifacts as erc721Artifacts,
+    DummyERC721ReceiverContract,
+    DummyERC721TokenContract,
+} from '@0x/contracts-erc721';
 import {
     chaiSetup,
     constants,
@@ -9,15 +20,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC20TokenTransferEventArgs,
-    DummyERC721ReceiverContract,
-    DummyERC721TokenContract,
-    DummyMultipleReturnERC20TokenContract,
-    DummyNoReturnERC20TokenContract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { RevertReason } from '@0x/types';
@@ -26,24 +28,27 @@ import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { ERC20ProxyContract } from '../generated-wrappers/erc20_proxy';
-import { ERC721ProxyContract } from '../generated-wrappers/erc721_proxy';
-import { MultiAssetProxyContract } from '../generated-wrappers/multi_asset_proxy';
-import { artifacts } from '../src/artifacts';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ERC721Wrapper } from './utils/erc721_wrapper';
+import {
+    artifacts,
+    ERC20ProxyContract,
+    ERC20Wrapper,
+    ERC721ProxyContract,
+    ERC721Wrapper,
+    IAssetDataContract,
+    IAssetProxyContract,
+    MultiAssetProxyContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const assetProxyInterface = new IAssetProxyContract(
-    interfacesArtifacts.IAssetProxy.compilerOutput.abi,
+    artifacts.IAssetProxy.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
 const assetDataInterface = new IAssetDataContract(
-    interfacesArtifacts.IAssetData.compilerOutput.abi,
+    artifacts.IAssetData.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
@@ -149,7 +154,7 @@ describe('Asset Transfer Proxies', () => {
             constants.DUMMY_TOKEN_DECIMALS,
         );
         noReturnErc20Token = await DummyNoReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyNoReturnERC20Token,
+            erc20Artifacts.DummyNoReturnERC20Token,
             provider,
             txDefaults,
             constants.DUMMY_TOKEN_NAME,
@@ -158,7 +163,7 @@ describe('Asset Transfer Proxies', () => {
             constants.DUMMY_TOKEN_TOTAL_SUPPLY,
         );
         multipleReturnErc20Token = await DummyMultipleReturnERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyMultipleReturnERC20Token,
+            erc20Artifacts.DummyMultipleReturnERC20Token,
             provider,
             txDefaults,
             constants.DUMMY_TOKEN_NAME,
@@ -199,7 +204,7 @@ describe('Asset Transfer Proxies', () => {
         // Deploy and configure ERC721 tokens and receiver
         [erc721TokenA, erc721TokenB] = await erc721Wrapper.deployDummyTokensAsync();
         erc721Receiver = await DummyERC721ReceiverContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.DummyERC721Receiver,
+            erc721Artifacts.DummyERC721Receiver,
             provider,
             txDefaults,
         );
@@ -563,7 +568,7 @@ describe('Asset Transfer Proxies', () => {
                     erc721Receiver.address,
                     amount,
                 );
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokensArtifacts });
+                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc721Artifacts });
                 const tx = await logDecoder.getTxWithDecodedLogsAsync(
                     await web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
@@ -755,7 +760,7 @@ describe('Asset Transfer Proxies', () => {
                     inputAmount,
                 );
                 const erc20Balances = await erc20Wrapper.getBalancesAsync();
-                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokensArtifacts });
+                const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts });
                 const tx = await logDecoder.getTxWithDecodedLogsAsync(
                     await web3Wrapper.sendTransactionAsync({
                         to: multiAssetProxy.address,
diff --git a/contracts/asset-proxy/test/utils/erc20_wrapper.ts b/contracts/asset-proxy/test/utils/erc20_wrapper.ts
index e5ab0e36c..12cd06ece 100644
--- a/contracts/asset-proxy/test/utils/erc20_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc20_wrapper.ts
@@ -1,5 +1,5 @@
+import { artifacts as tokensArtifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
 import { constants, ERC20BalancesByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts, DummyERC20TokenContract } from '@0x/contracts-tokens';
 import { assetDataUtils } from '@0x/order-utils';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
diff --git a/contracts/asset-proxy/test/utils/erc721_wrapper.ts b/contracts/asset-proxy/test/utils/erc721_wrapper.ts
index 1f658ce86..fc43d8c52 100644
--- a/contracts/asset-proxy/test/utils/erc721_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc721_wrapper.ts
@@ -1,5 +1,5 @@
+import { artifacts as tokensArtifacts, DummyERC721TokenContract } from '@0x/contracts-erc721';
 import { constants, ERC721TokenIdsByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts, DummyERC721TokenContract } from '@0x/contracts-tokens';
 import { generatePseudoRandomSalt } from '@0x/order-utils';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
diff --git a/contracts/erc20/.solhintignore b/contracts/erc20/.solhintignore
new file mode 100644
index 000000000..ededa90be
--- /dev/null
+++ b/contracts/erc20/.solhintignore
@@ -0,0 +1 @@
+contracts/src/ZRXToken.sol
diff --git a/contracts/tokens/CHANGELOG.json b/contracts/erc20/CHANGELOG.json
index 724ab1e4a..724ab1e4a 100644
--- a/contracts/tokens/CHANGELOG.json
+++ b/contracts/erc20/CHANGELOG.json
diff --git a/contracts/tokens/CHANGELOG.md b/contracts/erc20/CHANGELOG.md
index 59d0804da..59d0804da 100644
--- a/contracts/tokens/CHANGELOG.md
+++ b/contracts/erc20/CHANGELOG.md
diff --git a/contracts/tokens/DEPLOYS.json b/contracts/erc20/DEPLOYS.json
index 5ff58c035..5ff58c035 100644
--- a/contracts/tokens/DEPLOYS.json
+++ b/contracts/erc20/DEPLOYS.json
diff --git a/contracts/tokens/README.md b/contracts/erc20/README.md
index 2d1db92f0..2d1db92f0 100644
--- a/contracts/tokens/README.md
+++ b/contracts/erc20/README.md
diff --git a/contracts/tokens/compiler.json b/contracts/erc20/compiler.json
index 498c5d826..58fc8ea9b 100644
--- a/contracts/tokens/compiler.json
+++ b/contracts/erc20/compiler.json
@@ -22,23 +22,13 @@
         "DummyERC20Token",
         "DummyMultipleReturnERC20Token",
         "DummyNoReturnERC20Token",
-        "DummyERC721Receiver",
-        "InvalidERC721Receiver",
-        "DummyERC721Token",
         "ReentrantERC20Token",
         "ERC20Token",
         "IERC20Token",
         "MintableERC20Token",
         "UnlimitedAllowanceERC20Token",
-        "ERC721Token",
-        "IERC721Receiver",
-        "IERC721Token",
-        "MintableERC721Token",
         "IEtherToken",
         "WETH9",
-        "ERC20Token_v1",
-        "Token_v1",
-        "UnlimitedAllowanceToken_v1",
         "ZRXToken"
     ]
 }
diff --git a/contracts/tokens/contracts/ERC20Token/ERC20Token.sol b/contracts/erc20/contracts/src/ERC20Token.sol
index 190eead76..b6e9d0f9f 100644
--- a/contracts/tokens/contracts/ERC20Token/ERC20Token.sol
+++ b/contracts/erc20/contracts/src/ERC20Token.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.24;
 
-import "./IERC20Token.sol";
+import "./interfaces/IERC20Token.sol";
 
 
 contract ERC20Token is
diff --git a/contracts/tokens/contracts/ERC20Token/MintableERC20Token.sol b/contracts/erc20/contracts/src/MintableERC20Token.sol
index 1108db53d..1108db53d 100644
--- a/contracts/tokens/contracts/ERC20Token/MintableERC20Token.sol
+++ b/contracts/erc20/contracts/src/MintableERC20Token.sol
diff --git a/contracts/tokens/contracts/ERC20Token/UnlimitedAllowanceERC20Token.sol b/contracts/erc20/contracts/src/UnlimitedAllowanceERC20Token.sol
index 3a43c250d..3a43c250d 100644
--- a/contracts/tokens/contracts/ERC20Token/UnlimitedAllowanceERC20Token.sol
+++ b/contracts/erc20/contracts/src/UnlimitedAllowanceERC20Token.sol
diff --git a/contracts/tokens/contracts/EtherToken/WETH9.sol b/contracts/erc20/contracts/src/WETH9.sol
index 17876b86d..17876b86d 100644
--- a/contracts/tokens/contracts/EtherToken/WETH9.sol
+++ b/contracts/erc20/contracts/src/WETH9.sol
diff --git a/contracts/erc20/contracts/src/ZRXToken.sol b/contracts/erc20/contracts/src/ZRXToken.sol
new file mode 100644
index 000000000..75e4dc0a9
--- /dev/null
+++ b/contracts/erc20/contracts/src/ZRXToken.sol
@@ -0,0 +1,150 @@
+/*
+
+  Copyright 2018 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity 0.4.11;
+
+
+contract Token {
+
+    /// @return total amount of tokens
+    function totalSupply() constant returns (uint supply) {}
+
+    /// @param _owner The address from which the balance will be retrieved
+    /// @return The balance
+    function balanceOf(address _owner) constant returns (uint balance) {}
+
+    /// @notice send `_value` token to `_to` from `msg.sender`
+    /// @param _to The address of the recipient
+    /// @param _value The amount of token to be transferred
+    /// @return Whether the transfer was successful or not
+    function transfer(address _to, uint _value) returns (bool success) {}
+
+    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
+    /// @param _from The address of the sender
+    /// @param _to The address of the recipient
+    /// @param _value The amount of token to be transferred
+    /// @return Whether the transfer was successful or not
+    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}
+
+    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
+    /// @param _spender The address of the account able to transfer the tokens
+    /// @param _value The amount of wei to be approved for transfer
+    /// @return Whether the approval was successful or not
+    function approve(address _spender, uint _value) returns (bool success) {}
+
+    /// @param _owner The address of the account owning tokens
+    /// @param _spender The address of the account able to transfer the tokens
+    /// @return Amount of remaining tokens allowed to spent
+    function allowance(address _owner, address _spender) constant returns (uint remaining) {}
+
+    event Transfer(address indexed _from, address indexed _to, uint _value);
+    event Approval(address indexed _owner, address indexed _spender, uint _value);
+}
+
+
+contract ERC20Token is Token {
+
+    function transfer(address _to, uint _value) returns (bool) {
+        //Default assumes totalSupply can't be over max (2^256 - 1).
+        if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
+            balances[msg.sender] -= _value;
+            balances[_to] += _value;
+            Transfer(msg.sender, _to, _value);
+            return true;
+        } else { return false; }
+    }
+
+    function transferFrom(address _from, address _to, uint _value) returns (bool) {
+        if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
+            balances[_to] += _value;
+            balances[_from] -= _value;
+            allowed[_from][msg.sender] -= _value;
+            Transfer(_from, _to, _value);
+            return true;
+        } else { return false; }
+    }
+
+    function balanceOf(address _owner) constant returns (uint) {
+        return balances[_owner];
+    }
+
+    function approve(address _spender, uint _value) returns (bool) {
+        allowed[msg.sender][_spender] = _value;
+        Approval(msg.sender, _spender, _value);
+        return true;
+    }
+
+    function allowance(address _owner, address _spender) constant returns (uint) {
+        return allowed[_owner][_spender];
+    }
+
+    mapping (address => uint) balances;
+    mapping (address => mapping (address => uint)) allowed;
+    uint public totalSupply;
+}
+
+
+contract UnlimitedAllowanceToken is ERC20Token {
+
+    uint constant MAX_UINT = 2**256 - 1;
+
+    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.
+    /// @param _from Address to transfer from.
+    /// @param _to Address to transfer to.
+    /// @param _value Amount to transfer.
+    /// @return Success of transfer.
+    function transferFrom(address _from, address _to, uint _value)
+        public
+        returns (bool)
+    {
+        uint allowance = allowed[_from][msg.sender];
+        if (balances[_from] >= _value
+            && allowance >= _value
+            && balances[_to] + _value >= balances[_to]
+        ) {
+            balances[_to] += _value;
+            balances[_from] -= _value;
+            if (allowance < MAX_UINT) {
+                allowed[_from][msg.sender] -= _value;
+            }
+            Transfer(_from, _to, _value);
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+
+contract ZRXToken is 
+    UnlimitedAllowanceToken
+{
+
+    // solhint-disable const-name-snakecase
+    uint8 constant public decimals = 18;
+    uint256 public totalSupply = 10**27; // 1 billion tokens, 18 decimal places
+    string constant public name = "0x Protocol Token";
+    string constant public symbol = "ZRX";
+    // solhint-enableconst-name-snakecase
+
+    function ZRXToken()
+        public
+    {
+        balances[msg.sender] = totalSupply;
+    }
+}
diff --git a/contracts/tokens/contracts/ERC20Token/IERC20Token.sol b/contracts/erc20/contracts/src/interfaces/IERC20Token.sol
index 9f9b89585..9f9b89585 100644
--- a/contracts/tokens/contracts/ERC20Token/IERC20Token.sol
+++ b/contracts/erc20/contracts/src/interfaces/IERC20Token.sol
diff --git a/contracts/tokens/contracts/EtherToken/IEtherToken.sol b/contracts/erc20/contracts/src/interfaces/IEtherToken.sol
index 32baa3eb0..cb07cae6f 100644
--- a/contracts/tokens/contracts/EtherToken/IEtherToken.sol
+++ b/contracts/erc20/contracts/src/interfaces/IEtherToken.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.24;
 
-import "../ERC20Token/IERC20Token.sol";
+import "./IERC20Token.sol";
 
 
 contract IEtherToken is
diff --git a/contracts/tokens/contracts/test/DummyERC20Token/DummyERC20Token.sol b/contracts/erc20/contracts/test/DummyERC20Token.sol
index 93f0dd9c7..39e739a91 100644
--- a/contracts/tokens/contracts/test/DummyERC20Token/DummyERC20Token.sol
+++ b/contracts/erc20/contracts/test/DummyERC20Token.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
-import "../../ERC20Token/MintableERC20Token.sol";
+import "../src/MintableERC20Token.sol";
 
 
 contract DummyERC20Token is 
diff --git a/contracts/tokens/contracts/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol b/contracts/erc20/contracts/test/DummyMultipleReturnERC20Token.sol
index 733d4437e..733d4437e 100644
--- a/contracts/tokens/contracts/test/DummyERC20Token/DummyMultipleReturnERC20Token.sol
+++ b/contracts/erc20/contracts/test/DummyMultipleReturnERC20Token.sol
diff --git a/contracts/tokens/contracts/test/DummyERC20Token/DummyNoReturnERC20Token.sol b/contracts/erc20/contracts/test/DummyNoReturnERC20Token.sol
index e16825a16..e16825a16 100644
--- a/contracts/tokens/contracts/test/DummyERC20Token/DummyNoReturnERC20Token.sol
+++ b/contracts/erc20/contracts/test/DummyNoReturnERC20Token.sol
diff --git a/contracts/tokens/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol b/contracts/erc20/contracts/test/ReentrantERC20Token.sol
index 2fc48fdca..0629754c0 100644
--- a/contracts/tokens/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
+++ b/contracts/erc20/contracts/test/ReentrantERC20Token.sol
@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-import "../../ERC20Token/ERC20Token.sol";
+import "../src/ERC20Token.sol";
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";
 
diff --git a/contracts/tokens/package.json b/contracts/erc20/package.json
index 001b99f16..e0ac11164 100644
--- a/contracts/tokens/package.json
+++ b/contracts/erc20/package.json
@@ -1,5 +1,5 @@
 {
-    "name": "@0x/contracts-tokens",
+    "name": "@0x/contracts-erc20",
     "version": "1.0.6",
     "engines": {
         "node": ">=6.12"
@@ -32,7 +32,7 @@
         "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DummyERC721Receiver|InvalidERC721Receiver|DummyERC721Token|ReentrantERC20Token|ERC20Token|IERC20Token|MintableERC20Token|UnlimitedAllowanceERC20Token|ERC721Token|IERC721Receiver|IERC721Token|MintableERC721Token|IEtherToken|WETH9|ERC20Token_v1|Token_v1|UnlimitedAllowanceToken_v1|ZRXToken).json"
+        "abis": "generated-artifacts/@(DummyERC20Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|ReentrantERC20Token|ERC20Token|IERC20Token|MintableERC20Token|UnlimitedAllowanceERC20Token|IEtherToken|WETH9|ZRXToken).json"
     },
     "repository": {
         "type": "git",
diff --git a/contracts/tokens/src/artifacts/index.ts b/contracts/erc20/src/artifacts/index.ts
index 977d01c3e..ce1ae06ac 100644
--- a/contracts/tokens/src/artifacts/index.ts
+++ b/contracts/erc20/src/artifacts/index.ts
@@ -1,24 +1,14 @@
 import { ContractArtifact } from 'ethereum-types';
 
 import * as DummyERC20Token from '../../generated-artifacts/DummyERC20Token.json';
-import * as DummyERC721Receiver from '../../generated-artifacts/DummyERC721Receiver.json';
-import * as DummyERC721Token from '../../generated-artifacts/DummyERC721Token.json';
 import * as DummyMultipleReturnERC20Token from '../../generated-artifacts/DummyMultipleReturnERC20Token.json';
 import * as DummyNoReturnERC20Token from '../../generated-artifacts/DummyNoReturnERC20Token.json';
 import * as ERC20Token from '../../generated-artifacts/ERC20Token.json';
-import * as ERC20Token_v1 from '../../generated-artifacts/ERC20Token_v1.json';
-import * as ERC721Token from '../../generated-artifacts/ERC721Token.json';
 import * as IERC20Token from '../../generated-artifacts/IERC20Token.json';
-import * as IERC721Receiver from '../../generated-artifacts/IERC721Receiver.json';
-import * as IERC721Token from '../../generated-artifacts/IERC721Token.json';
 import * as IEtherToken from '../../generated-artifacts/IEtherToken.json';
-import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json';
 import * as MintableERC20Token from '../../generated-artifacts/MintableERC20Token.json';
-import * as MintableERC721Token from '../../generated-artifacts/MintableERC721Token.json';
 import * as ReentrantERC20Token from '../../generated-artifacts/ReentrantERC20Token.json';
-import * as Token_v1 from '../../generated-artifacts/Token_v1.json';
 import * as UnlimitedAllowanceERC20Token from '../../generated-artifacts/UnlimitedAllowanceERC20Token.json';
-import * as UnlimitedAllowanceToken_v1 from '../../generated-artifacts/UnlimitedAllowanceToken_v1.json';
 import * as WETH9 from '../../generated-artifacts/WETH9.json';
 import * as ZRXToken from '../../generated-artifacts/ZRXToken.json';
 
@@ -27,23 +17,13 @@ export const artifacts = {
     DummyERC20Token: DummyERC20Token as ContractArtifact,
     DummyMultipleReturnERC20Token: DummyMultipleReturnERC20Token as ContractArtifact,
     DummyNoReturnERC20Token: DummyNoReturnERC20Token as ContractArtifact,
-    DummyERC721Receiver: DummyERC721Receiver as ContractArtifact,
-    InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
-    DummyERC721Token: DummyERC721Token as ContractArtifact,
     ReentrantERC20Token: ReentrantERC20Token as ContractArtifact,
     ERC20Token: ERC20Token as ContractArtifact,
     IERC20Token: IERC20Token as ContractArtifact,
     MintableERC20Token: MintableERC20Token as ContractArtifact,
     UnlimitedAllowanceERC20Token: UnlimitedAllowanceERC20Token as ContractArtifact,
-    ERC721Token: ERC721Token as ContractArtifact,
-    IERC721Receiver: IERC721Receiver as ContractArtifact,
-    IERC721Token: IERC721Token as ContractArtifact,
-    MintableERC721Token: MintableERC721Token as ContractArtifact,
     IEtherToken: IEtherToken as ContractArtifact,
     WETH9: WETH9 as ContractArtifact,
-    ERC20Token_v1: ERC20Token_v1 as ContractArtifact,
-    Token_v1: Token_v1 as ContractArtifact,
-    UnlimitedAllowanceToken_v1: UnlimitedAllowanceToken_v1 as ContractArtifact,
     // Note(albrow): "as any" hack still required here because ZRXToken does not
     // conform to the v2 artifact type.
     ZRXToken: (ZRXToken as any) as ContractArtifact,
diff --git a/contracts/tokens/src/index.ts b/contracts/erc20/src/index.ts
index 91dd7e0e3..91dd7e0e3 100644
--- a/contracts/tokens/src/index.ts
+++ b/contracts/erc20/src/index.ts
diff --git a/contracts/tokens/src/wrappers/index.ts b/contracts/erc20/src/wrappers/index.ts
index 98bf26657..b4e4ef969 100644
--- a/contracts/tokens/src/wrappers/index.ts
+++ b/contracts/erc20/src/wrappers/index.ts
@@ -1,21 +1,11 @@
 export * from '../../generated-wrappers/zrx_token';
 export * from '../../generated-wrappers/weth9';
-export * from '../../generated-wrappers/unlimitedallowancetoken_v1';
 export * from '../../generated-wrappers/unlimited_allowance_erc20_token';
-export * from '../../generated-wrappers/token_v1';
 export * from '../../generated-wrappers/reentrant_erc20_token';
-export * from '../../generated-wrappers/mintable_erc721_token';
 export * from '../../generated-wrappers/mintable_erc20_token';
-export * from '../../generated-wrappers/invalid_erc721_receiver';
 export * from '../../generated-wrappers/i_ether_token';
-export * from '../../generated-wrappers/i_erc721_token';
-export * from '../../generated-wrappers/i_erc721_receiver';
 export * from '../../generated-wrappers/i_erc20_token';
-export * from '../../generated-wrappers/erc721_token';
-export * from '../../generated-wrappers/erc20token_v1';
 export * from '../../generated-wrappers/erc20_token';
 export * from '../../generated-wrappers/dummy_no_return_erc20_token';
 export * from '../../generated-wrappers/dummy_multiple_return_erc20_token';
-export * from '../../generated-wrappers/dummy_erc721_token';
-export * from '../../generated-wrappers/dummy_erc721_receiver';
 export * from '../../generated-wrappers/dummy_erc20_token';
diff --git a/contracts/tokens/test/global_hooks.ts b/contracts/erc20/test/global_hooks.ts
index f8ace376a..f8ace376a 100644
--- a/contracts/tokens/test/global_hooks.ts
+++ b/contracts/erc20/test/global_hooks.ts
diff --git a/contracts/tokens/test/unlimited_allowance_token.ts b/contracts/erc20/test/unlimited_allowance_token.ts
index f0b8e53a4..f0b8e53a4 100644
--- a/contracts/tokens/test/unlimited_allowance_token.ts
+++ b/contracts/erc20/test/unlimited_allowance_token.ts
diff --git a/contracts/tokens/test/weth9.ts b/contracts/erc20/test/weth9.ts
index 6a3948e2c..6a3948e2c 100644
--- a/contracts/tokens/test/weth9.ts
+++ b/contracts/erc20/test/weth9.ts
diff --git a/contracts/tokens/test/zrx_token.ts b/contracts/erc20/test/zrx_token.ts
index 820b054e6..820b054e6 100644
--- a/contracts/tokens/test/zrx_token.ts
+++ b/contracts/erc20/test/zrx_token.ts
diff --git a/contracts/tokens/tsconfig.json b/contracts/erc20/tsconfig.json
index 0d5f98cb8..4df7424be 100644
--- a/contracts/tokens/tsconfig.json
+++ b/contracts/erc20/tsconfig.json
@@ -10,23 +10,13 @@
         "./generated-artifacts/DummyERC20Token.json",
         "./generated-artifacts/DummyMultipleReturnERC20Token.json",
         "./generated-artifacts/DummyNoReturnERC20Token.json",
-        "./generated-artifacts/DummyERC721Receiver.json",
-        "./generated-artifacts/InvalidERC721Receiver.json",
-        "./generated-artifacts/DummyERC721Token.json",
         "./generated-artifacts/ReentrantERC20Token.json",
         "./generated-artifacts/ERC20Token.json",
         "./generated-artifacts/IERC20Token.json",
         "./generated-artifacts/MintableERC20Token.json",
         "./generated-artifacts/UnlimitedAllowanceERC20Token.json",
-        "./generated-artifacts/ERC721Token.json",
-        "./generated-artifacts/IERC721Receiver.json",
-        "./generated-artifacts/IERC721Token.json",
-        "./generated-artifacts/MintableERC721Token.json",
         "./generated-artifacts/IEtherToken.json",
         "./generated-artifacts/WETH9.json",
-        "./generated-artifacts/ERC20Token_v1.json",
-        "./generated-artifacts/Token_v1.json",
-        "./generated-artifacts/UnlimitedAllowanceToken_v1.json",
         "./generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]
diff --git a/contracts/tokens/tslint.json b/contracts/erc20/tslint.json
index 1bb3ac2a2..1bb3ac2a2 100644
--- a/contracts/tokens/tslint.json
+++ b/contracts/erc20/tslint.json
diff --git a/contracts/tokens/.solhintignore b/contracts/erc721/.solhintignore
index 1e33ec53b..1e33ec53b 100644
--- a/contracts/tokens/.solhintignore
+++ b/contracts/erc721/.solhintignore
diff --git a/contracts/erc721/CHANGELOG.json b/contracts/erc721/CHANGELOG.json
new file mode 100644
index 000000000..724ab1e4a
--- /dev/null
+++ b/contracts/erc721/CHANGELOG.json
@@ -0,0 +1,56 @@
+[
+    {
+        "version": "2.0.0",
+        "changes": [
+            {
+                "note": "Upgrade the bignumber.js to v8.0.2",
+                "pr": 1517
+            }
+        ]
+    },
+    {
+        "timestamp": 1547747677,
+        "version": "1.0.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547561734,
+        "version": "1.0.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547225310,
+        "version": "1.0.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1547040760,
+        "version": "1.0.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1544741676,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    }
+]
diff --git a/contracts/erc721/CHANGELOG.md b/contracts/erc721/CHANGELOG.md
new file mode 100644
index 000000000..59d0804da
--- /dev/null
+++ b/contracts/erc721/CHANGELOG.md
@@ -0,0 +1,26 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.6 - _January 17, 2019_
+
+    * Dependencies updated
+
+## v1.0.5 - _January 15, 2019_
+
+    * Dependencies updated
+
+## v1.0.4 - _January 11, 2019_
+
+    * Dependencies updated
+
+## v1.0.3 - _January 9, 2019_
+
+    * Dependencies updated
+
+## v1.0.2 - _December 13, 2018_
+
+    * Dependencies updated
diff --git a/contracts/erc721/DEPLOYS.json b/contracts/erc721/DEPLOYS.json
new file mode 100644
index 000000000..5ff58c035
--- /dev/null
+++ b/contracts/erc721/DEPLOYS.json
@@ -0,0 +1,16 @@
+[
+    {
+        "name": "ZRXToken",
+        "version": "1.0.0",
+        "changes": [
+            {
+                "note": "protocol v1 deploy",
+                "networks": {
+                    "1": "0xe41d2489571d322189246dafa5ebde1f4699f498",
+                    "3": "0xff67881f8d12f372d91baae9752eb3631ff0ed00",
+                    "42": "0x2002d3812f58e35f0ea1ffbf80a75a38c32175fa"
+                }
+            }
+        ]
+    }
+]
diff --git a/contracts/erc721/README.md b/contracts/erc721/README.md
new file mode 100644
index 000000000..2d1db92f0
--- /dev/null
+++ b/contracts/erc721/README.md
@@ -0,0 +1,74 @@
+## Token contracts
+
+Token smart contracts that are used in the 0x protocol. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [CHANGELOG](./CHANGELOG.json) of this package.
+
+## Usage
+
+Token contracts that make up and interact with version 2.0.0 of the protocol can be found in the [contracts](./contracts) directory. The contents of this directory are broken down into the following subdirectories:
+
+-   [tokens](./contracts/tokens)
+    -   This directory contains implementations of different tokens and token standards, including [wETH](https://weth.io/), ZRX, [ERC20](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md), and [ERC721](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md).
+-   [test](./contracts/test)
+    -   This directory contains mocks and other contracts that are used solely for testing contracts within the other directories.
+
+## Bug bounty
+
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=@0x/contracts-tokens yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=@0x/contracts-tokens yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
+
+#### Testing options
+
+Contracts testing options like coverage, profiling, revert traces or backing node choosing - are described [here](../TESTING.md).
diff --git a/contracts/erc721/compiler.json b/contracts/erc721/compiler.json
new file mode 100644
index 000000000..c5f07ddb8
--- /dev/null
+++ b/contracts/erc721/compiler.json
@@ -0,0 +1,30 @@
+{
+    "artifactsDir": "./generated-artifacts",
+    "contractsDir": "./contracts",
+    "compilerSettings": {
+        "optimizer": {
+            "enabled": true,
+            "runs": 1000000
+        },
+        "outputSelection": {
+            "*": {
+                "*": [
+                    "abi",
+                    "evm.bytecode.object",
+                    "evm.bytecode.sourceMap",
+                    "evm.deployedBytecode.object",
+                    "evm.deployedBytecode.sourceMap"
+                ]
+            }
+        }
+    },
+    "contracts": [
+        "DummyERC721Receiver",
+        "InvalidERC721Receiver",
+        "DummyERC721Token",
+        "ERC721Token",
+        "IERC721Receiver",
+        "IERC721Token",
+        "MintableERC721Token"
+    ]
+}
diff --git a/contracts/tokens/contracts/ERC721Token/ERC721Token.sol b/contracts/erc721/contracts/src/ERC721Token.sol
index 3cd7e13a1..32f70ccf8 100644
--- a/contracts/tokens/contracts/ERC721Token/ERC721Token.sol
+++ b/contracts/erc721/contracts/src/ERC721Token.sol
@@ -18,8 +18,8 @@
 
 pragma solidity ^0.4.24;
 
-import "./IERC721Token.sol";
-import "./IERC721Receiver.sol";
+import "./interfaces/IERC721Token.sol";
+import "./interfaces/IERC721Receiver.sol";
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 
 
diff --git a/contracts/tokens/contracts/ERC721Token/MintableERC721Token.sol b/contracts/erc721/contracts/src/MintableERC721Token.sol
index 27326d857..27326d857 100644
--- a/contracts/tokens/contracts/ERC721Token/MintableERC721Token.sol
+++ b/contracts/erc721/contracts/src/MintableERC721Token.sol
diff --git a/contracts/tokens/contracts/ERC721Token/IERC721Receiver.sol b/contracts/erc721/contracts/src/interfaces/IERC721Receiver.sol
index c3ad35ede..c3ad35ede 100644
--- a/contracts/tokens/contracts/ERC721Token/IERC721Receiver.sol
+++ b/contracts/erc721/contracts/src/interfaces/IERC721Receiver.sol
diff --git a/contracts/tokens/contracts/ERC721Token/IERC721Token.sol b/contracts/erc721/contracts/src/interfaces/IERC721Token.sol
index 56a3314df..56a3314df 100644
--- a/contracts/tokens/contracts/ERC721Token/IERC721Token.sol
+++ b/contracts/erc721/contracts/src/interfaces/IERC721Token.sol
diff --git a/contracts/tokens/contracts/test/DummyERC721Receiver/DummyERC721Receiver.sol b/contracts/erc721/contracts/test/DummyERC721Receiver.sol
index cf190b919..b5de01aa5 100644
--- a/contracts/tokens/contracts/test/DummyERC721Receiver/DummyERC721Receiver.sol
+++ b/contracts/erc721/contracts/test/DummyERC721Receiver.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../ERC721Token/IERC721Receiver.sol";
+import "../src/interfaces/IERC721Receiver.sol";
 
 
 contract DummyERC721Receiver is
diff --git a/contracts/tokens/contracts/test/DummyERC721Token/DummyERC721Token.sol b/contracts/erc721/contracts/test/DummyERC721Token.sol
index a0c6ead89..41dc8ea18 100644
--- a/contracts/tokens/contracts/test/DummyERC721Token/DummyERC721Token.sol
+++ b/contracts/erc721/contracts/test/DummyERC721Token.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../ERC721Token/MintableERC721Token.sol";
+import "../src/MintableERC721Token.sol";
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
 
 
diff --git a/contracts/tokens/contracts/test/DummyERC721Receiver/InvalidERC721Receiver.sol b/contracts/erc721/contracts/test/InvalidERC721Receiver.sol
index 338e0e802..ea59dedc5 100644
--- a/contracts/tokens/contracts/test/DummyERC721Receiver/InvalidERC721Receiver.sol
+++ b/contracts/erc721/contracts/test/InvalidERC721Receiver.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../ERC721Token/IERC721Receiver.sol";
+import "../src/interfaces/IERC721Receiver.sol";
 
 
 contract InvalidERC721Receiver is
diff --git a/contracts/erc721/package.json b/contracts/erc721/package.json
new file mode 100644
index 000000000..84b09a708
--- /dev/null
+++ b/contracts/erc721/package.json
@@ -0,0 +1,89 @@
+{
+    "name": "@0x/contracts-erc721",
+    "version": "1.0.6",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Token contracts used by 0x protocol",
+    "main": "lib/src/index.js",
+    "directories": {
+        "test": "test"
+    },
+    "scripts": {
+        "build": "yarn pre_build && tsc -b",
+        "build:ci": "yarn build",
+        "pre_build": "run-s compile generate_contract_wrappers",
+        "test": "yarn run_mocha",
+        "rebuild_and_test": "run-s build test",
+        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
+        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
+        "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
+        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
+        "compile": "sol-compiler",
+        "watch": "sol-compiler -w",
+        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "coverage:report:text": "istanbul report text",
+        "coverage:report:html": "istanbul report html && open coverage/index.html",
+        "profiler:report:html": "istanbul report html && open coverage/index.html",
+        "coverage:report:lcov": "istanbul report lcov",
+        "test:circleci": "yarn test",
+        "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
+    },
+    "config": {
+        "abis": "generated-artifacts/@(DummyERC721Receiver|InvalidERC721Receiver|DummyERC721Token|ERC721Token|IERC721Receiver|IERC721Token|MintableERC721Token).json"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/0x-monorepo.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/0x-monorepo/issues"
+    },
+    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
+    "devDependencies": {
+        "@0x/abi-gen": "^1.0.22",
+        "@0x/contracts-test-utils": "^2.0.1",
+        "@0x/dev-utils": "^1.0.24",
+        "@0x/sol-compiler": "^2.0.2",
+        "@0x/subproviders": "^2.1.11",
+        "@0x/tslint-config": "^2.0.2",
+        "@types/bn.js": "^4.11.0",
+        "@types/lodash": "4.14.104",
+        "@types/node": "*",
+        "@types/yargs": "^10.0.0",
+        "chai": "^4.0.1",
+        "chai-as-promised": "^7.1.0",
+        "chai-bignumber": "^3.0.0",
+        "dirty-chai": "^2.0.1",
+        "ethereumjs-abi": "0.6.5",
+        "make-promises-safe": "^1.1.0",
+        "mocha": "^4.1.0",
+        "npm-run-all": "^4.1.2",
+        "shx": "^0.2.2",
+        "solhint": "^1.4.1",
+        "tslint": "5.11.0",
+        "typescript": "3.0.1",
+        "yargs": "^10.0.3"
+    },
+    "dependencies": {
+        "@0x/base-contract": "^3.0.13",
+        "@0x/contracts-exchange-libs": "^1.0.6",
+        "@0x/contracts-utils": "^1.0.6",
+        "@0x/order-utils": "^3.1.2",
+        "@0x/types": "^1.5.2",
+        "@0x/typescript-typings": "^3.0.8",
+        "@0x/utils": "^3.0.1",
+        "@0x/web3-wrapper": "^3.2.4",
+        "@types/js-combinatorics": "^0.5.29",
+        "bn.js": "^4.11.8",
+        "ethereum-types": "^1.1.6",
+        "ethereumjs-util": "^5.1.1",
+        "lodash": "^4.17.5"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}
diff --git a/contracts/erc721/src/artifacts/index.ts b/contracts/erc721/src/artifacts/index.ts
new file mode 100644
index 000000000..8d5ec8a46
--- /dev/null
+++ b/contracts/erc721/src/artifacts/index.ts
@@ -0,0 +1,20 @@
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DummyERC721Receiver from '../../generated-artifacts/DummyERC721Receiver.json';
+import * as DummyERC721Token from '../../generated-artifacts/DummyERC721Token.json';
+import * as ERC721Token from '../../generated-artifacts/ERC721Token.json';
+import * as IERC721Receiver from '../../generated-artifacts/IERC721Receiver.json';
+import * as IERC721Token from '../../generated-artifacts/IERC721Token.json';
+import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json';
+import * as MintableERC721Token from '../../generated-artifacts/MintableERC721Token.json';
+
+// tslint:disable:no-unnecessary-type-assertion
+export const artifacts = {
+    DummyERC721Receiver: DummyERC721Receiver as ContractArtifact,
+    InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
+    DummyERC721Token: DummyERC721Token as ContractArtifact,
+    ERC721Token: ERC721Token as ContractArtifact,
+    IERC721Receiver: IERC721Receiver as ContractArtifact,
+    IERC721Token: IERC721Token as ContractArtifact,
+    MintableERC721Token: MintableERC721Token as ContractArtifact,
+};
diff --git a/contracts/erc721/src/index.ts b/contracts/erc721/src/index.ts
new file mode 100644
index 000000000..91dd7e0e3
--- /dev/null
+++ b/contracts/erc721/src/index.ts
@@ -0,0 +1,2 @@
+export * from './wrappers';
+export * from './artifacts';
diff --git a/contracts/erc721/src/wrappers/index.ts b/contracts/erc721/src/wrappers/index.ts
new file mode 100644
index 000000000..ba6c51885
--- /dev/null
+++ b/contracts/erc721/src/wrappers/index.ts
@@ -0,0 +1,7 @@
+export * from '../../generated-wrappers/mintable_erc721_token';
+export * from '../../generated-wrappers/invalid_erc721_receiver';
+export * from '../../generated-wrappers/i_erc721_token';
+export * from '../../generated-wrappers/i_erc721_receiver';
+export * from '../../generated-wrappers/erc721_token';
+export * from '../../generated-wrappers/dummy_erc721_token';
+export * from '../../generated-wrappers/dummy_erc721_receiver';
diff --git a/contracts/tokens/test/erc721_token.ts b/contracts/erc721/test/erc721_token.ts
index 13332cd35..13332cd35 100644
--- a/contracts/tokens/test/erc721_token.ts
+++ b/contracts/erc721/test/erc721_token.ts
diff --git a/contracts/erc721/test/global_hooks.ts b/contracts/erc721/test/global_hooks.ts
new file mode 100644
index 000000000..f8ace376a
--- /dev/null
+++ b/contracts/erc721/test/global_hooks.ts
@@ -0,0 +1,17 @@
+import { env, EnvVars } from '@0x/dev-utils';
+
+import { coverage, profiler, provider } from '@0x/contracts-test-utils';
+before('start web3 provider', () => {
+    provider.start();
+});
+after('generate coverage report', async () => {
+    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
+        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
+        await coverageSubprovider.writeCoverageAsync();
+    }
+    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
+        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
+        await profilerSubprovider.writeProfilerOutputAsync();
+    }
+    provider.stop();
+});
diff --git a/contracts/erc721/tsconfig.json b/contracts/erc721/tsconfig.json
new file mode 100644
index 000000000..098c3a7f3
--- /dev/null
+++ b/contracts/erc721/tsconfig.json
@@ -0,0 +1,19 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": {
+        "outDir": "lib",
+        "rootDir": ".",
+        "resolveJsonModule": true
+    },
+    "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
+    "files": [
+        "./generated-artifacts/DummyERC721Receiver.json",
+        "./generated-artifacts/InvalidERC721Receiver.json",
+        "./generated-artifacts/DummyERC721Token.json",
+        "./generated-artifacts/ERC721Token.json",
+        "./generated-artifacts/IERC721Receiver.json",
+        "./generated-artifacts/IERC721Token.json",
+        "./generated-artifacts/MintableERC721Token.json"
+    ],
+    "exclude": ["./deploy/solc/solc_bin"]
+}
diff --git a/contracts/erc721/tslint.json b/contracts/erc721/tslint.json
new file mode 100644
index 000000000..1bb3ac2a2
--- /dev/null
+++ b/contracts/erc721/tslint.json
@@ -0,0 +1,6 @@
+{
+    "extends": ["@0x/tslint-config"],
+    "rules": {
+        "custom-no-magic-numbers": false
+    }
+}
diff --git a/contracts/exchange/contracts/test/TestStaticCallReceiver.sol b/contracts/exchange/contracts/test/TestStaticCallReceiver.sol
index 522887fcb..23e60b387 100644
--- a/contracts/exchange/contracts/test/TestStaticCallReceiver.sol
+++ b/contracts/exchange/contracts/test/TestStaticCallReceiver.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
 
 
 // solhint-disable no-unused-vars
diff --git a/contracts/exchange/package.json b/contracts/exchange/package.json
index abe6d7210..9712b99ce 100644
--- a/contracts/exchange/package.json
+++ b/contracts/exchange/package.json
@@ -73,7 +73,8 @@
         "@0x/contracts-exchange-libs": "^1.0.6",
         "@0x/contracts-multisig": "^1.0.6",
         "@0x/contracts-test-utils": "^2.0.1",
-        "@0x/contracts-tokens": "^1.0.6",
+        "@0x/contracts-erc20": "^1.0.6",
+        "@0x/contracts-erc721": "^1.0.6",
         "@0x/contracts-utils": "^1.0.6",
         "@0x/order-utils": "^3.1.2",
         "@0x/types": "^1.5.2",
diff --git a/contracts/exchange/test/core.ts b/contracts/exchange/test/core.ts
index 294976bf6..74161cc73 100644
--- a/contracts/exchange/test/core.ts
+++ b/contracts/exchange/test/core.ts
@@ -1,10 +1,20 @@
 import {
     artifacts as proxyArtifacts,
     ERC20ProxyContract,
+    ERC20Wrapper,
     ERC721ProxyContract,
+    ERC721Wrapper,
     MultiAssetProxyContract,
 } from '@0x/contracts-asset-proxy';
 import {
+    artifacts as erc20Artifacts,
+    DummyERC20TokenContract,
+    DummyERC20TokenTransferEventArgs,
+    DummyNoReturnERC20TokenContract,
+    ReentrantERC20TokenContract,
+} from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import {
     chaiSetup,
     constants,
     ERC20BalancesByOwner,
@@ -17,14 +27,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC20TokenTransferEventArgs,
-    DummyERC721TokenContract,
-    DummyNoReturnERC20TokenContract,
-    ReentrantERC20TokenContract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
 import { RevertReason, SignatureType, SignedOrder } from '@0x/types';
@@ -35,13 +37,13 @@ import { LogWithDecodedArgs } from 'ethereum-types';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
 
-import { ExchangeCancelEventArgs, ExchangeContract } from '../generated-wrappers/exchange';
-import { TestStaticCallReceiverContract } from '../generated-wrappers/test_static_call_receiver';
-import { artifacts } from '../src/artifacts';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ERC721Wrapper } from './utils/erc721_wrapper';
-import { ExchangeWrapper } from './utils/exchange_wrapper';
+import {
+    artifacts,
+    ExchangeCancelEventArgs,
+    ExchangeContract,
+    ExchangeWrapper,
+    TestStaticCallReceiverContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -118,7 +120,7 @@ describe('Exchange core', () => {
             txDefaults,
         );
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.ReentrantERC20Token,
+            erc20Artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
@@ -343,7 +345,7 @@ describe('Exchange core', () => {
     describe('Testing exchange of ERC20 tokens with no return values', () => {
         before(async () => {
             noReturnErc20Token = await DummyNoReturnERC20TokenContract.deployFrom0xArtifactAsync(
-                tokensArtifacts.DummyNoReturnERC20Token,
+                erc20Artifacts.DummyNoReturnERC20Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/exchange/test/dispatcher.ts b/contracts/exchange/test/dispatcher.ts
index 36d263bf4..a25755936 100644
--- a/contracts/exchange/test/dispatcher.ts
+++ b/contracts/exchange/test/dispatcher.ts
@@ -1,4 +1,11 @@
-import { artifacts as proxyArtifacts, ERC20ProxyContract, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
+import {
+    artifacts as proxyArtifacts,
+    ERC20ProxyContract,
+    ERC20Wrapper,
+    ERC721ProxyContract,
+    ERC721Wrapper,
+} from '@0x/contracts-asset-proxy';
+import { DummyERC20TokenContract } from '@0x/contracts-erc20';
 import {
     chaiSetup,
     constants,
@@ -8,7 +15,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { DummyERC20TokenContract } from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { AssetProxyId, RevertReason } from '@0x/types';
@@ -18,13 +24,10 @@ import { LogWithDecodedArgs } from 'ethereum-types';
 import * as _ from 'lodash';
 
 import {
+    artifacts,
     TestAssetProxyDispatcherAssetProxyRegisteredEventArgs,
     TestAssetProxyDispatcherContract,
-} from '../generated-wrappers/test_asset_proxy_dispatcher';
-import { artifacts } from '../src/artifacts';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ERC721Wrapper } from './utils/erc721_wrapper';
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/exchange/test/fill_order.ts b/contracts/exchange/test/fill_order.ts
index fee39db53..3f54091d4 100644
--- a/contracts/exchange/test/fill_order.ts
+++ b/contracts/exchange/test/fill_order.ts
@@ -16,10 +16,7 @@ import {
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import * as _ from 'lodash';
 
-import {
-    FillOrderCombinatorialUtils,
-    fillOrderCombinatorialUtilsFactoryAsync,
-} from './utils/fill_order_combinatorial_utils';
+import { FillOrderCombinatorialUtils, fillOrderCombinatorialUtilsFactoryAsync } from '../src';
 
 chaiSetup.configure();
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
diff --git a/contracts/exchange/test/internal.ts b/contracts/exchange/test/internal.ts
index 3a7f0cff2..7a1e12a7a 100644
--- a/contracts/exchange/test/internal.ts
+++ b/contracts/exchange/test/internal.ts
@@ -16,8 +16,7 @@ import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { TestExchangeInternalsContract } from '../generated-wrappers/test_exchange_internals';
-import { artifacts } from '../src/artifacts';
+import { artifacts, TestExchangeInternalsContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/exchange/test/match_orders.ts b/contracts/exchange/test/match_orders.ts
index 346ee42a9..d17025ddd 100644
--- a/contracts/exchange/test/match_orders.ts
+++ b/contracts/exchange/test/match_orders.ts
@@ -1,4 +1,6 @@
-import { ERC20ProxyContract, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
+import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract, ReentrantERC20TokenContract } from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
 import {
     chaiSetup,
     constants,
@@ -10,12 +12,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC721TokenContract,
-    ReentrantERC20TokenContract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { RevertReason } from '@0x/types';
@@ -24,14 +20,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { ExchangeContract } from '../generated-wrappers/exchange';
-import { TestExchangeInternalsContract } from '../generated-wrappers/test_exchange_internals';
-import { artifacts } from '../src/artifacts';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ERC721Wrapper } from './utils/erc721_wrapper';
-import { ExchangeWrapper } from './utils/exchange_wrapper';
-import { MatchOrderTester } from './utils/match_order_tester';
+import { artifacts, ExchangeContract, ExchangeWrapper, MatchOrderTester, TestExchangeInternalsContract } from '../src';
 
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 chaiSetup.configure();
@@ -142,7 +131,7 @@ describe('matchOrders', () => {
         );
 
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.ReentrantERC20Token,
+            erc20Artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
diff --git a/contracts/exchange/test/signature_validator.ts b/contracts/exchange/test/signature_validator.ts
index 33b15b394..89eac4ddb 100644
--- a/contracts/exchange/test/signature_validator.ts
+++ b/contracts/exchange/test/signature_validator.ts
@@ -1,3 +1,4 @@
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import {
     addressUtils,
     chaiSetup,
@@ -9,7 +10,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, orderHashUtils, signatureUtils } from '@0x/order-utils';
 import { RevertReason, SignatureType, SignedOrder } from '@0x/types';
@@ -78,7 +78,7 @@ describe('MixinSignatureValidator', () => {
             provider,
             txDefaults,
         );
-        signatureValidatorLogDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokensArtifacts });
+        signatureValidatorLogDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts });
         await web3Wrapper.awaitTransactionSuccessAsync(
             await signatureValidator.setSignatureValidatorApproval.sendTransactionAsync(testValidator.address, true, {
                 from: signerAddress,
diff --git a/contracts/exchange/test/transactions.ts b/contracts/exchange/test/transactions.ts
index a1d855631..613953493 100644
--- a/contracts/exchange/test/transactions.ts
+++ b/contracts/exchange/test/transactions.ts
@@ -1,4 +1,5 @@
-import { ERC20ProxyContract } from '@0x/contracts-asset-proxy';
+import { ERC20ProxyContract, ERC20Wrapper } from '@0x/contracts-asset-proxy';
+import { DummyERC20TokenContract } from '@0x/contracts-erc20';
 import {
     chaiSetup,
     constants,
@@ -12,7 +13,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { DummyERC20TokenContract } from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, generatePseudoRandomSalt } from '@0x/order-utils';
 import { OrderWithoutExchangeAddress, RevertReason, SignedOrder } from '@0x/types';
@@ -20,11 +20,7 @@ import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { ExchangeContract } from '../generated-wrappers/exchange';
-import { artifacts, ExchangeWrapperContract, WhitelistContract } from '../src/';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ExchangeWrapper } from './utils/exchange_wrapper';
+import { artifacts, ExchangeContract, ExchangeWrapper, ExchangeWrapperContract, WhitelistContract } from '../src/';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/exchange/test/utils/asset_wrapper.ts b/contracts/exchange/test/utils/asset_wrapper.ts
index e4090ad74..e5a5205f5 100644
--- a/contracts/exchange/test/utils/asset_wrapper.ts
+++ b/contracts/exchange/test/utils/asset_wrapper.ts
@@ -4,8 +4,7 @@ import { AssetProxyId } from '@0x/types';
 import { BigNumber, errorUtils } from '@0x/utils';
 import * as _ from 'lodash';
 
-import { ERC20Wrapper } from './erc20_wrapper';
-import { ERC721Wrapper } from './erc721_wrapper';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 
 interface ProxyIdToAssetWrappers {
     [proxyId: string]: AbstractAssetWrapper;
@@ -28,11 +27,13 @@ export class AssetWrapper {
         const proxyId = assetDataUtils.decodeAssetProxyId(assetData);
         switch (proxyId) {
             case AssetProxyId.ERC20: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc20Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC20Wrapper;
                 const balance = await erc20Wrapper.getBalanceAsync(userAddress, assetData);
                 return balance;
             }
             case AssetProxyId.ERC721: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const assetWrapper = this._proxyIdToAssetWrappers[proxyId] as ERC721Wrapper;
                 const assetProxyData = assetDataUtils.decodeERC721AssetData(assetData);
                 const isOwner = await assetWrapper.isOwnerAsync(
@@ -51,6 +52,7 @@ export class AssetWrapper {
         const proxyId = assetDataUtils.decodeAssetProxyId(assetData);
         switch (proxyId) {
             case AssetProxyId.ERC20: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc20Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC20Wrapper;
                 await erc20Wrapper.setBalanceAsync(userAddress, assetData, desiredBalance);
                 return;
@@ -59,6 +61,7 @@ export class AssetWrapper {
                 if (!desiredBalance.eq(0) && !desiredBalance.eq(1)) {
                     throw new Error(`Balance for ERC721 token can only be set to 0 or 1. Got: ${desiredBalance}`);
                 }
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc721Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC721Wrapper;
                 const assetProxyData = assetDataUtils.decodeERC721AssetData(assetData);
                 const doesTokenExist = erc721Wrapper.doesTokenExistAsync(
@@ -109,11 +112,13 @@ export class AssetWrapper {
         const proxyId = assetDataUtils.decodeAssetProxyId(assetData);
         switch (proxyId) {
             case AssetProxyId.ERC20: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc20Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC20Wrapper;
                 const allowance = await erc20Wrapper.getProxyAllowanceAsync(userAddress, assetData);
                 return allowance;
             }
             case AssetProxyId.ERC721: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const assetWrapper = this._proxyIdToAssetWrappers[proxyId] as ERC721Wrapper;
                 const erc721ProxyData = assetDataUtils.decodeERC721AssetData(assetData);
                 const isProxyApprovedForAll = await assetWrapper.isProxyApprovedForAllAsync(
@@ -143,6 +148,7 @@ export class AssetWrapper {
         const proxyId = assetDataUtils.decodeAssetProxyId(assetData);
         switch (proxyId) {
             case AssetProxyId.ERC20: {
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc20Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC20Wrapper;
                 await erc20Wrapper.setAllowanceAsync(userAddress, assetData, desiredAllowance);
                 return;
@@ -157,6 +163,7 @@ export class AssetWrapper {
                         `Allowance for ERC721 token can only be set to 0, 1 or 2^256-1. Got: ${desiredAllowance}`,
                     );
                 }
+                // tslint:disable-next-line:no-unnecessary-type-assertion
                 const erc721Wrapper = this._proxyIdToAssetWrappers[proxyId] as ERC721Wrapper;
                 const assetProxyData = assetDataUtils.decodeERC721AssetData(assetData);
 
diff --git a/contracts/exchange/test/utils/erc20_wrapper.ts b/contracts/exchange/test/utils/erc20_wrapper.ts
deleted file mode 100644
index 3fe21ff96..000000000
--- a/contracts/exchange/test/utils/erc20_wrapper.ts
+++ /dev/null
@@ -1,177 +0,0 @@
-import { artifacts as proxyArtifacts, ERC20ProxyContract } from '@0x/contracts-asset-proxy';
-import { constants, ERC20BalancesByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts, DummyERC20TokenContract } from '@0x/contracts-tokens';
-import { assetDataUtils } from '@0x/order-utils';
-import { BigNumber } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import { Provider } from 'ethereum-types';
-import * as _ from 'lodash';
-
-export class ERC20Wrapper {
-    private readonly _tokenOwnerAddresses: string[];
-    private readonly _contractOwnerAddress: string;
-    private readonly _web3Wrapper: Web3Wrapper;
-    private readonly _provider: Provider;
-    private readonly _dummyTokenContracts: DummyERC20TokenContract[];
-    private _proxyContract?: ERC20ProxyContract;
-    private _proxyIdIfExists?: string;
-    /**
-     * Instanitates an ERC20Wrapper
-     * @param provider Web3 provider to use for all JSON RPC requests
-     * @param tokenOwnerAddresses Addresses that we want to endow as owners for dummy ERC20 tokens
-     * @param contractOwnerAddress Desired owner of the contract
-     * Instance of ERC20Wrapper
-     */
-    constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
-        this._dummyTokenContracts = [];
-        this._web3Wrapper = new Web3Wrapper(provider);
-        this._provider = provider;
-        this._tokenOwnerAddresses = tokenOwnerAddresses;
-        this._contractOwnerAddress = contractOwnerAddress;
-    }
-    public async deployDummyTokensAsync(
-        numberToDeploy: number,
-        decimals: BigNumber,
-    ): Promise<DummyERC20TokenContract[]> {
-        for (let i = 0; i < numberToDeploy; i++) {
-            this._dummyTokenContracts.push(
-                await DummyERC20TokenContract.deployFrom0xArtifactAsync(
-                    tokensArtifacts.DummyERC20Token,
-                    this._provider,
-                    txDefaults,
-                    constants.DUMMY_TOKEN_NAME,
-                    constants.DUMMY_TOKEN_SYMBOL,
-                    decimals,
-                    constants.DUMMY_TOKEN_TOTAL_SUPPLY,
-                ),
-            );
-        }
-        return this._dummyTokenContracts;
-    }
-    public async deployProxyAsync(): Promise<ERC20ProxyContract> {
-        this._proxyContract = await ERC20ProxyContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.ERC20Proxy,
-            this._provider,
-            txDefaults,
-        );
-        this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
-        return this._proxyContract;
-    }
-    public getProxyId(): string {
-        this._validateProxyContractExistsOrThrow();
-        return this._proxyIdIfExists as string;
-    }
-    public async setBalancesAndAllowancesAsync(): Promise<void> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateProxyContractExistsOrThrow();
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                await this._web3Wrapper.awaitTransactionSuccessAsync(
-                    await dummyTokenContract.setBalance.sendTransactionAsync(
-                        tokenOwnerAddress,
-                        constants.INITIAL_ERC20_BALANCE,
-                        { from: this._contractOwnerAddress },
-                    ),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-                await this._web3Wrapper.awaitTransactionSuccessAsync(
-                    await dummyTokenContract.approve.sendTransactionAsync(
-                        (this._proxyContract as ERC20ProxyContract).address,
-                        constants.INITIAL_ERC20_ALLOWANCE,
-                        { from: tokenOwnerAddress },
-                    ),
-                    constants.AWAIT_TRANSACTION_MINED_MS,
-                );
-            }
-        }
-    }
-    public async getBalanceAsync(userAddress: string, assetData: string): Promise<BigNumber> {
-        const tokenContract = this._getTokenContractFromAssetData(assetData);
-        const balance = new BigNumber(await tokenContract.balanceOf.callAsync(userAddress));
-        return balance;
-    }
-    public async setBalanceAsync(userAddress: string, assetData: string, amount: BigNumber): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(assetData);
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.setBalance.sendTransactionAsync(userAddress, amount, {
-                from: this._contractOwnerAddress,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async getProxyAllowanceAsync(userAddress: string, assetData: string): Promise<BigNumber> {
-        const tokenContract = this._getTokenContractFromAssetData(assetData);
-        const proxyAddress = (this._proxyContract as ERC20ProxyContract).address;
-        const allowance = new BigNumber(await tokenContract.allowance.callAsync(userAddress, proxyAddress));
-        return allowance;
-    }
-    public async setAllowanceAsync(userAddress: string, assetData: string, amount: BigNumber): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(assetData);
-        const proxyAddress = (this._proxyContract as ERC20ProxyContract).address;
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.approve.sendTransactionAsync(proxyAddress, amount, {
-                from: userAddress,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async getBalancesAsync(): Promise<ERC20BalancesByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        const balancesByOwner: ERC20BalancesByOwner = {};
-        const balances: BigNumber[] = [];
-        const balanceInfo: Array<{ tokenOwnerAddress: string; tokenAddress: string }> = [];
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                balances.push(await dummyTokenContract.balanceOf.callAsync(tokenOwnerAddress));
-                balanceInfo.push({
-                    tokenOwnerAddress,
-                    tokenAddress: dummyTokenContract.address,
-                });
-            }
-        }
-        _.forEach(balances, (balance, balanceIndex) => {
-            const tokenAddress = balanceInfo[balanceIndex].tokenAddress;
-            const tokenOwnerAddress = balanceInfo[balanceIndex].tokenOwnerAddress;
-            if (_.isUndefined(balancesByOwner[tokenOwnerAddress])) {
-                balancesByOwner[tokenOwnerAddress] = {};
-            }
-            const wrappedBalance = new BigNumber(balance);
-            balancesByOwner[tokenOwnerAddress][tokenAddress] = wrappedBalance;
-        });
-        return balancesByOwner;
-    }
-    public addDummyTokenContract(dummy: DummyERC20TokenContract): void {
-        if (!_.isUndefined(this._dummyTokenContracts)) {
-            this._dummyTokenContracts.push(dummy);
-        }
-    }
-    public addTokenOwnerAddress(address: string): void {
-        this._tokenOwnerAddresses.push(address);
-    }
-    public getTokenOwnerAddresses(): string[] {
-        return this._tokenOwnerAddresses;
-    }
-    public getTokenAddresses(): string[] {
-        const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address);
-        return tokenAddresses;
-    }
-    private _getTokenContractFromAssetData(assetData: string): DummyERC20TokenContract {
-        const erc20ProxyData = assetDataUtils.decodeERC20AssetData(assetData);
-        const tokenAddress = erc20ProxyData.tokenAddress;
-        const tokenContractIfExists = _.find(this._dummyTokenContracts, c => c.address === tokenAddress);
-        if (_.isUndefined(tokenContractIfExists)) {
-            throw new Error(`Token: ${tokenAddress} was not deployed through ERC20Wrapper`);
-        }
-        return tokenContractIfExists;
-    }
-    private _validateDummyTokenContractsExistOrThrow(): void {
-        if (_.isUndefined(this._dummyTokenContracts)) {
-            throw new Error('Dummy ERC20 tokens not yet deployed, please call "deployDummyTokensAsync"');
-        }
-    }
-    private _validateProxyContractExistsOrThrow(): void {
-        if (_.isUndefined(this._proxyContract)) {
-            throw new Error('ERC20 proxy contract not yet deployed, please call "deployProxyAsync"');
-        }
-    }
-}
diff --git a/contracts/exchange/test/utils/erc721_wrapper.ts b/contracts/exchange/test/utils/erc721_wrapper.ts
deleted file mode 100644
index 021c75ef2..000000000
--- a/contracts/exchange/test/utils/erc721_wrapper.ts
+++ /dev/null
@@ -1,234 +0,0 @@
-import { artifacts as proxyArtifacts, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
-import { constants, ERC721TokenIdsByOwner, txDefaults } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts, DummyERC721TokenContract } from '@0x/contracts-tokens';
-import { generatePseudoRandomSalt } from '@0x/order-utils';
-import { BigNumber } from '@0x/utils';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import { Provider } from 'ethereum-types';
-import * as _ from 'lodash';
-
-export class ERC721Wrapper {
-    private readonly _tokenOwnerAddresses: string[];
-    private readonly _contractOwnerAddress: string;
-    private readonly _web3Wrapper: Web3Wrapper;
-    private readonly _provider: Provider;
-    private readonly _dummyTokenContracts: DummyERC721TokenContract[];
-    private _proxyContract?: ERC721ProxyContract;
-    private _proxyIdIfExists?: string;
-    private _initialTokenIdsByOwner: ERC721TokenIdsByOwner = {};
-    constructor(provider: Provider, tokenOwnerAddresses: string[], contractOwnerAddress: string) {
-        this._web3Wrapper = new Web3Wrapper(provider);
-        this._provider = provider;
-        this._dummyTokenContracts = [];
-        this._tokenOwnerAddresses = tokenOwnerAddresses;
-        this._contractOwnerAddress = contractOwnerAddress;
-    }
-    public async deployDummyTokensAsync(): Promise<DummyERC721TokenContract[]> {
-        // tslint:disable-next-line:no-unused-variable
-        for (const i of _.times(constants.NUM_DUMMY_ERC721_TO_DEPLOY)) {
-            this._dummyTokenContracts.push(
-                await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                    tokensArtifacts.DummyERC721Token,
-                    this._provider,
-                    txDefaults,
-                    constants.DUMMY_TOKEN_NAME,
-                    constants.DUMMY_TOKEN_SYMBOL,
-                ),
-            );
-        }
-        return this._dummyTokenContracts;
-    }
-    public async deployProxyAsync(): Promise<ERC721ProxyContract> {
-        this._proxyContract = await ERC721ProxyContract.deployFrom0xArtifactAsync(
-            proxyArtifacts.ERC721Proxy,
-            this._provider,
-            txDefaults,
-        );
-        this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
-        return this._proxyContract;
-    }
-    public getProxyId(): string {
-        this._validateProxyContractExistsOrThrow();
-        return this._proxyIdIfExists as string;
-    }
-    public async setBalancesAndAllowancesAsync(): Promise<void> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateProxyContractExistsOrThrow();
-        this._initialTokenIdsByOwner = {};
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                // tslint:disable-next-line:no-unused-variable
-                for (const i of _.times(constants.NUM_ERC721_TOKENS_TO_MINT)) {
-                    const tokenId = generatePseudoRandomSalt();
-                    await this.mintAsync(dummyTokenContract.address, tokenId, tokenOwnerAddress);
-                    if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress])) {
-                        this._initialTokenIdsByOwner[tokenOwnerAddress] = {
-                            [dummyTokenContract.address]: [],
-                        };
-                    }
-                    if (_.isUndefined(this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address])) {
-                        this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address] = [];
-                    }
-                    this._initialTokenIdsByOwner[tokenOwnerAddress][dummyTokenContract.address].push(tokenId);
-
-                    await this.approveProxyAsync(dummyTokenContract.address, tokenId);
-                }
-            }
-        }
-    }
-    public async doesTokenExistAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const owner = await tokenContract.ownerOf.callAsync(tokenId);
-        const doesExist = owner !== constants.NULL_ADDRESS;
-        return doesExist;
-    }
-    public async approveProxyAsync(tokenAddress: string, tokenId: BigNumber): Promise<void> {
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        await this.approveAsync(proxyAddress, tokenAddress, tokenId);
-    }
-    public async approveProxyForAllAsync(tokenAddress: string, tokenId: BigNumber, isApproved: boolean): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const tokenOwner = await this.ownerOfAsync(tokenAddress, tokenId);
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.setApprovalForAll.sendTransactionAsync(proxyAddress, isApproved, {
-                from: tokenOwner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async approveAsync(to: string, tokenAddress: string, tokenId: BigNumber): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const tokenOwner = await this.ownerOfAsync(tokenAddress, tokenId);
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.approve.sendTransactionAsync(to, tokenId, {
-                from: tokenOwner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async transferFromAsync(
-        tokenAddress: string,
-        tokenId: BigNumber,
-        currentOwner: string,
-        userAddress: string,
-    ): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.transferFrom.sendTransactionAsync(currentOwner, userAddress, tokenId, {
-                from: currentOwner,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async mintAsync(tokenAddress: string, tokenId: BigNumber, userAddress: string): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.mint.sendTransactionAsync(userAddress, tokenId, {
-                from: this._contractOwnerAddress,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async burnAsync(tokenAddress: string, tokenId: BigNumber, owner: string): Promise<void> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        await this._web3Wrapper.awaitTransactionSuccessAsync(
-            await tokenContract.burn.sendTransactionAsync(owner, tokenId, {
-                from: this._contractOwnerAddress,
-            }),
-            constants.AWAIT_TRANSACTION_MINED_MS,
-        );
-    }
-    public async ownerOfAsync(tokenAddress: string, tokenId: BigNumber): Promise<string> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const owner = await tokenContract.ownerOf.callAsync(tokenId);
-        return owner;
-    }
-    public async isOwnerAsync(userAddress: string, tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const tokenOwner = await tokenContract.ownerOf.callAsync(tokenId);
-        const isOwner = tokenOwner === userAddress;
-        return isOwner;
-    }
-    public async isProxyApprovedForAllAsync(userAddress: string, tokenAddress: string): Promise<boolean> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const operator = (this._proxyContract as ERC721ProxyContract).address;
-        const didApproveAll = await tokenContract.isApprovedForAll.callAsync(userAddress, operator);
-        return didApproveAll;
-    }
-    public async isProxyApprovedAsync(tokenAddress: string, tokenId: BigNumber): Promise<boolean> {
-        this._validateProxyContractExistsOrThrow();
-        const tokenContract = this._getTokenContractFromAssetData(tokenAddress);
-        const approvedAddress = await tokenContract.getApproved.callAsync(tokenId);
-        const proxyAddress = (this._proxyContract as ERC721ProxyContract).address;
-        const isProxyAnApprovedOperator = approvedAddress === proxyAddress;
-        return isProxyAnApprovedOperator;
-    }
-    public async getBalancesAsync(): Promise<ERC721TokenIdsByOwner> {
-        this._validateDummyTokenContractsExistOrThrow();
-        this._validateBalancesAndAllowancesSetOrThrow();
-        const tokenIdsByOwner: ERC721TokenIdsByOwner = {};
-        const tokenOwnerAddresses: string[] = [];
-        const tokenInfo: Array<{ tokenId: BigNumber; tokenAddress: string }> = [];
-        for (const dummyTokenContract of this._dummyTokenContracts) {
-            for (const tokenOwnerAddress of this._tokenOwnerAddresses) {
-                const initialTokenOwnerIds = this._initialTokenIdsByOwner[tokenOwnerAddress][
-                    dummyTokenContract.address
-                ];
-                for (const tokenId of initialTokenOwnerIds) {
-                    tokenOwnerAddresses.push(await dummyTokenContract.ownerOf.callAsync(tokenId));
-                    tokenInfo.push({
-                        tokenId,
-                        tokenAddress: dummyTokenContract.address,
-                    });
-                }
-            }
-        }
-        _.forEach(tokenOwnerAddresses, (tokenOwnerAddress, ownerIndex) => {
-            const tokenAddress = tokenInfo[ownerIndex].tokenAddress;
-            const tokenId = tokenInfo[ownerIndex].tokenId;
-            if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress])) {
-                tokenIdsByOwner[tokenOwnerAddress] = {
-                    [tokenAddress]: [],
-                };
-            }
-            if (_.isUndefined(tokenIdsByOwner[tokenOwnerAddress][tokenAddress])) {
-                tokenIdsByOwner[tokenOwnerAddress][tokenAddress] = [];
-            }
-            tokenIdsByOwner[tokenOwnerAddress][tokenAddress].push(tokenId);
-        });
-        return tokenIdsByOwner;
-    }
-    public getTokenOwnerAddresses(): string[] {
-        return this._tokenOwnerAddresses;
-    }
-    public getTokenAddresses(): string[] {
-        const tokenAddresses = _.map(this._dummyTokenContracts, dummyTokenContract => dummyTokenContract.address);
-        return tokenAddresses;
-    }
-    private _getTokenContractFromAssetData(tokenAddress: string): DummyERC721TokenContract {
-        const tokenContractIfExists = _.find(this._dummyTokenContracts, c => c.address === tokenAddress);
-        if (_.isUndefined(tokenContractIfExists)) {
-            throw new Error(`Token: ${tokenAddress} was not deployed through ERC20Wrapper`);
-        }
-        return tokenContractIfExists;
-    }
-    private _validateDummyTokenContractsExistOrThrow(): void {
-        if (_.isUndefined(this._dummyTokenContracts)) {
-            throw new Error('Dummy ERC721 tokens not yet deployed, please call "deployDummyTokensAsync"');
-        }
-    }
-    private _validateProxyContractExistsOrThrow(): void {
-        if (_.isUndefined(this._proxyContract)) {
-            throw new Error('ERC721 proxy contract not yet deployed, please call "deployProxyAsync"');
-        }
-    }
-    private _validateBalancesAndAllowancesSetOrThrow(): void {
-        if (_.keys(this._initialTokenIdsByOwner).length === 0) {
-            throw new Error(
-                'Dummy ERC721 balances and allowances not yet set, please call "setBalancesAndAllowancesAsync"',
-            );
-        }
-    }
-}
diff --git a/contracts/exchange/test/utils/exchange_wrapper.ts b/contracts/exchange/test/utils/exchange_wrapper.ts
index 437882b41..eca535c65 100644
--- a/contracts/exchange/test/utils/exchange_wrapper.ts
+++ b/contracts/exchange/test/utils/exchange_wrapper.ts
@@ -1,3 +1,5 @@
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
+import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 import {
     FillResults,
     formatters,
@@ -6,15 +8,13 @@ import {
     orderUtils,
     SignedTransaction,
 } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { SignedOrder } from '@0x/types';
 import { AbiEncoder, BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { MethodAbi, Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { ExchangeContract } from '../../generated-wrappers/exchange';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, ExchangeContract } from '../../src';
 
 import { AbiDecodedFillOrderData } from './types';
 
@@ -25,7 +25,7 @@ export class ExchangeWrapper {
     constructor(exchangeContract: ExchangeContract, provider: Provider) {
         this._exchange = exchangeContract;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...tokensArtifacts });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...erc20Artifacts, ...erc721Artifacts });
     }
     public async fillOrderAsync(
         signedOrder: SignedOrder,
diff --git a/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts b/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
index c2f530e5b..26b168909 100644
--- a/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
+++ b/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
@@ -1,4 +1,5 @@
-import { artifacts as libsArtifacts, TestLibsContract } from '@0x/contracts-libs';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { artifacts as libsArtifacts, TestLibsContract } from '@0x/contracts-exchange-libs';
 import {
     AllowanceAmountScenario,
     AssetDataScenario,
@@ -32,12 +33,9 @@ import { LogWithDecodedArgs, Provider, TxData } from 'ethereum-types';
 import * as _ from 'lodash';
 import 'make-promises-safe';
 
-import { ExchangeContract, ExchangeFillEventArgs } from '../../generated-wrappers/exchange';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, ExchangeContract, ExchangeFillEventArgs } from '../../src';
 
 import { AssetWrapper } from './asset_wrapper';
-import { ERC20Wrapper } from './erc20_wrapper';
-import { ERC721Wrapper } from './erc721_wrapper';
 import { ExchangeWrapper } from './exchange_wrapper';
 import { OrderFactoryFromScenario } from './order_factory_from_scenario';
 import { SimpleAssetBalanceAndProxyAllowanceFetcher } from './simple_asset_balance_and_proxy_allowance_fetcher';
diff --git a/contracts/exchange/test/utils/index.ts b/contracts/exchange/test/utils/index.ts
index 75cd88666..d88a38266 100644
--- a/contracts/exchange/test/utils/index.ts
+++ b/contracts/exchange/test/utils/index.ts
@@ -1,3 +1,3 @@
 export * from './exchange_wrapper';
-export * from './erc20_wrapper';
-export * from './erc721_wrapper';
+export * from './fill_order_combinatorial_utils';
+export * from './match_order_tester';
diff --git a/contracts/exchange/test/utils/match_order_tester.ts b/contracts/exchange/test/utils/match_order_tester.ts
index 0ba8017c5..680ff13ac 100644
--- a/contracts/exchange/test/utils/match_order_tester.ts
+++ b/contracts/exchange/test/utils/match_order_tester.ts
@@ -1,3 +1,4 @@
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import {
     chaiSetup,
     ERC20BalancesByOwner,
@@ -15,8 +16,6 @@ import * as _ from 'lodash';
 
 import { TransactionReceiptWithDecodedLogs } from '../../../../node_modules/ethereum-types';
 
-import { ERC20Wrapper } from './erc20_wrapper';
-import { ERC721Wrapper } from './erc721_wrapper';
 import { ExchangeWrapper } from './exchange_wrapper';
 
 chaiSetup.configure();
diff --git a/contracts/exchange/test/utils/order_factory_from_scenario.ts b/contracts/exchange/test/utils/order_factory_from_scenario.ts
index ecb4b2e28..6f5645906 100644
--- a/contracts/exchange/test/utils/order_factory_from_scenario.ts
+++ b/contracts/exchange/test/utils/order_factory_from_scenario.ts
@@ -1,3 +1,4 @@
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
 import {
     AssetDataScenario,
     constants,
@@ -8,7 +9,6 @@ import {
     OrderScenario,
     TakerScenario,
 } from '@0x/contracts-test-utils';
-import { DummyERC721TokenContract } from '@0x/contracts-tokens';
 import { assetDataUtils, generatePseudoRandomSalt } from '@0x/order-utils';
 import { Order } from '@0x/types';
 import { BigNumber, errorUtils } from '@0x/utils';
diff --git a/contracts/exchange/test/wrapper.ts b/contracts/exchange/test/wrapper.ts
index 6211682b1..62a0d426f 100644
--- a/contracts/exchange/test/wrapper.ts
+++ b/contracts/exchange/test/wrapper.ts
@@ -1,4 +1,6 @@
-import { ERC20ProxyContract, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
+import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract, ReentrantERC20TokenContract } from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
 import {
     chaiSetup,
     constants,
@@ -12,12 +14,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC721TokenContract,
-    ReentrantERC20TokenContract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
 import { RevertReason, SignedOrder } from '@0x/types';
@@ -26,12 +22,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { ExchangeContract } from '../generated-wrappers/exchange';
-import { artifacts } from '../src/artifacts';
-
-import { ERC20Wrapper } from './utils/erc20_wrapper';
-import { ERC721Wrapper } from './utils/erc721_wrapper';
-import { ExchangeWrapper } from './utils/exchange_wrapper';
+import { artifacts, ExchangeContract, ExchangeWrapper } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -116,7 +107,7 @@ describe('Exchange wrappers', () => {
         );
 
         reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
-            tokensArtifacts.ReentrantERC20Token,
+            erc20Artifacts.ReentrantERC20Token,
             provider,
             txDefaults,
             exchange.address,
diff --git a/contracts/extensions/contracts/DutchAuction/DutchAuction.sol b/contracts/extensions/contracts/DutchAuction/DutchAuction.sol
index f98e553a7..7631880c0 100644
--- a/contracts/extensions/contracts/DutchAuction/DutchAuction.sol
+++ b/contracts/extensions/contracts/DutchAuction/DutchAuction.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 
diff --git a/contracts/extensions/contracts/Forwarder/MixinAssets.sol b/contracts/extensions/contracts/Forwarder/MixinAssets.sol
index c00a47088..330586ed9 100644
--- a/contracts/extensions/contracts/Forwarder/MixinAssets.sol
+++ b/contracts/extensions/contracts/Forwarder/MixinAssets.sol
@@ -20,8 +20,8 @@ pragma solidity ^0.4.24;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
-import "@0x/contracts-tokens/contracts/ERC721Token/IERC721Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc721/contracts/src/interfaces/IERC721Token.sol";
 import "./libs/LibConstants.sol";
 import "./mixins/MAssets.sol";
 
diff --git a/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol b/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol
index fdc63e68c..3ff2a03e5 100644
--- a/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol
+++ b/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol
@@ -20,8 +20,8 @@ pragma solidity ^0.4.24;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";
-import "@0x/contracts-tokens/contracts/EtherToken/IEtherToken.sol";
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
 
 
 contract LibConstants {
diff --git a/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol b/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol
index 9d46f5844..65b36ea65 100644
--- a/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol
+++ b/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol
@@ -20,8 +20,8 @@ pragma solidity ^0.4.24;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
-import "@0x/contracts-tokens/contracts/ERC721Token/IERC721Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc721/contracts/src/interfaces/IERC721Token.sol";
 import "./mixins/MAssets.sol";
 import "./libs/LibConstants.sol";
 
diff --git a/contracts/extensions/contracts/OrderValidator/OrderValidator.sol b/contracts/extensions/contracts/OrderValidator/OrderValidator.sol
index 6e325665a..3297a980f 100644
--- a/contracts/extensions/contracts/OrderValidator/OrderValidator.sol
+++ b/contracts/extensions/contracts/OrderValidator/OrderValidator.sol
@@ -21,8 +21,8 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";
-import "@0x/contracts-tokens/contracts/ERC20Token/IERC20Token.sol";
-import "@0x/contracts-tokens/contracts/ERC721Token/IERC721Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc721/contracts/src/interfaces/IERC721Token.sol";
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 
 
diff --git a/contracts/extensions/package.json b/contracts/extensions/package.json
index 5cea0dcea..af0c37b51 100644
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -74,7 +74,8 @@
         "@0x/contracts-asset-proxy": "^2.2.3",
         "@0x/contracts-exchange-libs": "^1.0.6",
         "@0x/contracts-exchange": "^2.2.3",
-        "@0x/contracts-tokens": "^1.0.6",
+        "@0x/contracts-erc20": "^1.0.6",
+        "@0x/contracts-erc721": "^1.0.6",
         "@0x/contracts-utils": "^1.0.6",
         "@0x/order-utils": "^3.1.2",
         "@0x/types": "^1.5.2",
diff --git a/contracts/extensions/src/index.ts b/contracts/extensions/src/index.ts
index d55f08ea2..ba813e7ca 100644
--- a/contracts/extensions/src/index.ts
+++ b/contracts/extensions/src/index.ts
@@ -1,2 +1,3 @@
 export * from './artifacts';
 export * from './wrappers';
+export * from '../test/utils';
diff --git a/contracts/extensions/test/extensions/balance_threshold_filter.ts b/contracts/extensions/test/balance_threshold_filter.ts
index 055beb487..c79a72f5a 100644
--- a/contracts/extensions/test/extensions/balance_threshold_filter.ts
+++ b/contracts/extensions/test/balance_threshold_filter.ts
@@ -7,13 +7,9 @@ import * as chai from 'chai';
 import { TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import {
-    artifacts as exchangeArtifacts,
-    ERC20Wrapper,
-    ERC721Wrapper,
-    ExchangeContract,
-    ExchangeWrapper,
-} from '@0x/contracts-exchange';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { DummyERC20TokenContract } from '@0x/contracts-erc20';
+import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -27,11 +23,8 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { DummyERC20TokenContract } from '@0x/contracts-tokens';
 
-import { BalanceThresholdFilterContract } from '../../generated-wrappers/balance_threshold_filter';
-import { artifacts } from '../../src/artifacts';
-import { BalanceThresholdWrapper } from '../utils/balance_threshold_wrapper';
+import { artifacts, BalanceThresholdFilterContract, BalanceThresholdWrapper } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/extensions/test/extensions/dutch_auction.ts b/contracts/extensions/test/dutch_auction.ts
index 132989efe..34ff25c3d 100644
--- a/contracts/extensions/test/extensions/dutch_auction.ts
+++ b/contracts/extensions/test/dutch_auction.ts
@@ -1,11 +1,8 @@
 import { DutchAuctionWrapper } from '@0x/contract-wrappers';
-import {
-    artifacts as exchangeArtifacts,
-    ERC20Wrapper,
-    ERC721Wrapper,
-    ExchangeContract,
-    ExchangeWrapper,
-} from '@0x/contracts-exchange';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract, WETH9Contract } from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -18,12 +15,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokensArtifacts,
-    DummyERC20TokenContract,
-    DummyERC721TokenContract,
-    WETH9Contract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, generatePseudoRandomSalt } from '@0x/order-utils';
 import { RevertReason, SignedOrder } from '@0x/types';
@@ -32,9 +23,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { DutchAuctionContract } from '../../generated-wrappers/dutch_auction';
-import { artifacts } from '../../src/artifacts';
-import { DutchAuctionTestWrapper } from '../utils/dutch_auction_test_wrapper';
+import { artifacts, DutchAuctionContract, DutchAuctionTestWrapper } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -93,7 +82,7 @@ describe(ContractName.DutchAuction, () => {
         const erc721Balances = await erc721Wrapper.getBalancesAsync();
         erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
 
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(tokensArtifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(erc20Artifacts.WETH9, provider, txDefaults);
         erc20Wrapper.addDummyTokenContract(wethContract as any);
 
         const zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
diff --git a/contracts/extensions/test/extensions/forwarder.ts b/contracts/extensions/test/forwarder.ts
index e9bda43ae..24c219563 100644
--- a/contracts/extensions/test/extensions/forwarder.ts
+++ b/contracts/extensions/test/forwarder.ts
@@ -1,10 +1,7 @@
-import {
-    artifacts as exchangeArtifacts,
-    ERC20Wrapper,
-    ERC721Wrapper,
-    ExchangeContract,
-    ExchangeWrapper,
-} from '@0x/contracts-exchange';
+import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract, WETH9Contract } from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -18,12 +15,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import {
-    artifacts as tokenArtifacts,
-    DummyERC20TokenContract,
-    DummyERC721TokenContract,
-    WETH9Contract,
-} from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { RevertReason, SignedOrder } from '@0x/types';
@@ -32,10 +23,7 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import { TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 
-import { ForwarderContract } from '../../generated-wrappers/forwarder';
-import { artifacts } from '../../src/artifacts';
-
-import { ForwarderWrapper } from '../utils/forwarder_wrapper';
+import { artifacts, ForwarderContract, ForwarderWrapper } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -100,7 +88,7 @@ describe(ContractName.Forwarder, () => {
         const erc721Balances = await erc721Wrapper.getBalancesAsync();
         erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
 
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(tokenArtifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(erc20Artifacts.WETH9, provider, txDefaults);
         weth = new DummyERC20TokenContract(wethContract.abi, wethContract.address, provider);
         erc20Wrapper.addDummyTokenContract(weth);
 
diff --git a/contracts/extensions/test/extensions/order_matcher.ts b/contracts/extensions/test/order_matcher.ts
index 61965dab3..0b2f9ddbb 100644
--- a/contracts/extensions/test/extensions/order_matcher.ts
+++ b/contracts/extensions/test/order_matcher.ts
@@ -1,7 +1,13 @@
-import { artifacts as proxyArtifacts, ERC20ProxyContract, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
 import {
-    artifacts as exchangeArtifacts,
+    artifacts as proxyArtifacts,
+    ERC20ProxyContract,
     ERC20Wrapper,
+    ERC721ProxyContract,
+} from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
+import { artifacts as erc721Artifacts, DummyERC721TokenContract } from '@0x/contracts-erc721';
+import {
+    artifacts as exchangeArtifacts,
     ExchangeContract,
     ExchangeFillEventArgs,
     ExchangeWrapper,
@@ -19,7 +25,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { artifacts as tokenArtifacts, DummyERC20TokenContract, DummyERC721TokenContract } from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
 import { RevertReason } from '@0x/types';
@@ -29,8 +34,7 @@ import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { OrderMatcherContract } from '../../generated-wrappers/order_matcher';
-import { artifacts } from '../../src/artifacts';
+import { artifacts, OrderMatcherContract } from '../src';
 
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 chaiSetup.configure();
@@ -450,7 +454,7 @@ describe('OrderMatcher', () => {
                 signedOrderLeft.signature,
                 signedOrderRight.signature,
             );
-            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokenArtifacts, ...exchangeArtifacts });
+            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts, ...exchangeArtifacts });
             const txReceipt = await logDecoder.getTxWithDecodedLogsAsync(
                 await web3Wrapper.sendTransactionAsync({
                     data,
@@ -488,7 +492,7 @@ describe('OrderMatcher', () => {
                 signedOrderLeft.signature,
                 signedOrderRight.signature,
             );
-            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...tokenArtifacts, ...exchangeArtifacts });
+            const logDecoder = new LogDecoder(web3Wrapper, { ...artifacts, ...erc20Artifacts, ...exchangeArtifacts });
             const txReceipt = await logDecoder.getTxWithDecodedLogsAsync(
                 await web3Wrapper.sendTransactionAsync({
                     data,
@@ -725,7 +729,7 @@ describe('OrderMatcher', () => {
         });
         it('should allow owner to withdraw ERC721 tokens', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                tokenArtifacts.DummyERC721Token,
+                erc721Artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
@@ -770,7 +774,7 @@ describe('OrderMatcher', () => {
         });
         it('should be able to approve an ERC721 token by passing in allowance = 1', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                tokenArtifacts.DummyERC721Token,
+                erc721Artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
@@ -787,7 +791,7 @@ describe('OrderMatcher', () => {
         });
         it('should be able to approve an ERC721 token by passing in allowance > 1', async () => {
             const erc721Token = await DummyERC721TokenContract.deployFrom0xArtifactAsync(
-                tokenArtifacts.DummyERC721Token,
+                erc721Artifacts.DummyERC721Token,
                 provider,
                 txDefaults,
                 constants.DUMMY_TOKEN_NAME,
diff --git a/contracts/extensions/test/extensions/order_validator.ts b/contracts/extensions/test/order_validator.ts
index 7871867c7..88dae14fb 100644
--- a/contracts/extensions/test/extensions/order_validator.ts
+++ b/contracts/extensions/test/order_validator.ts
@@ -1,11 +1,7 @@
-import { ERC20ProxyContract, ERC721ProxyContract } from '@0x/contracts-asset-proxy';
-import {
-    artifacts as exchangeArtifacts,
-    ERC20Wrapper,
-    ERC721Wrapper,
-    ExchangeContract,
-    ExchangeWrapper,
-} from '@0x/contracts-exchange';
+import { ERC20ProxyContract, ERC20Wrapper, ERC721ProxyContract, ERC721Wrapper } from '@0x/contracts-asset-proxy';
+import { DummyERC20TokenContract } from '@0x/contracts-erc20';
+import { DummyERC721TokenContract } from '@0x/contracts-erc721';
+import { artifacts as exchangeArtifacts, ExchangeContract, ExchangeWrapper } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
@@ -15,7 +11,6 @@ import {
     txDefaults,
     web3Wrapper,
 } from '@0x/contracts-test-utils';
-import { DummyERC20TokenContract, DummyERC721TokenContract } from '@0x/contracts-tokens';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
 import { SignedOrder } from '@0x/types';
@@ -23,8 +18,7 @@ import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { OrderValidatorContract } from '../../generated-wrappers/order_validator';
-import { artifacts } from '../../src/artifacts/index';
+import { artifacts, OrderValidatorContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/extensions/test/utils/balance_threshold_wrapper.ts b/contracts/extensions/test/utils/balance_threshold_wrapper.ts
index db2b23d42..3178d992e 100644
--- a/contracts/extensions/test/utils/balance_threshold_wrapper.ts
+++ b/contracts/extensions/test/utils/balance_threshold_wrapper.ts
@@ -1,3 +1,5 @@
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
+import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 import { artifacts as exchangeArtifacts, ExchangeContract } from '@0x/contracts-exchange';
 import {
     FillResults,
@@ -7,7 +9,6 @@ import {
     orderUtils,
     TransactionFactory,
 } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
@@ -35,7 +36,8 @@ export class BalanceThresholdWrapper {
         this._web3Wrapper = new Web3Wrapper(provider);
         this._logDecoder = new LogDecoder(this._web3Wrapper, {
             ...artifacts,
-            ...tokensArtifacts,
+            ...erc20Artifacts,
+            ...erc721Artifacts,
             ...exchangeArtifacts,
         });
     }
diff --git a/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts b/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
index 985af336d..5899ffcac 100644
--- a/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
+++ b/contracts/extensions/test/utils/dutch_auction_test_wrapper.ts
@@ -1,6 +1,7 @@
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
+import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 import { artifacts as exchangeArtifacts } from '@0x/contracts-exchange';
 import { LogDecoder } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { DutchAuctionDetails, SignedOrder } from '@0x/types';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
@@ -19,7 +20,8 @@ export class DutchAuctionTestWrapper {
         this._web3Wrapper = new Web3Wrapper(provider);
         this._logDecoder = new LogDecoder(this._web3Wrapper, {
             ...artifacts,
-            ...tokensArtifacts,
+            ...erc20Artifacts,
+            ...erc721Artifacts,
             ...exchangeArtifacts,
         });
     }
diff --git a/contracts/extensions/test/utils/forwarder_wrapper.ts b/contracts/extensions/test/utils/forwarder_wrapper.ts
index 5b89638a0..207106852 100644
--- a/contracts/extensions/test/utils/forwarder_wrapper.ts
+++ b/contracts/extensions/test/utils/forwarder_wrapper.ts
@@ -1,6 +1,7 @@
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
+import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 import { artifacts as exchangeArtifacts } from '@0x/contracts-exchange';
 import { constants, formatters, LogDecoder, MarketSellOrders } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
@@ -62,7 +63,8 @@ export class ForwarderWrapper {
         this._web3Wrapper = new Web3Wrapper(provider);
         this._logDecoder = new LogDecoder(this._web3Wrapper, {
             ...artifacts,
-            ...tokensArtifacts,
+            ...erc20Artifacts,
+            ...erc721Artifacts,
             ...exchangeArtifacts,
         });
     }
diff --git a/contracts/extensions/test/utils/index.ts b/contracts/extensions/test/utils/index.ts
new file mode 100644
index 000000000..d5d529c11
--- /dev/null
+++ b/contracts/extensions/test/utils/index.ts
@@ -0,0 +1,3 @@
+export * from './balance_threshold_wrapper';
+export * from './dutch_auction_test_wrapper';
+export * from './forwarder_wrapper';
diff --git a/contracts/multisig/package.json b/contracts/multisig/package.json
index ec6bf5367..b56a711d2 100644
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -71,7 +71,7 @@
     "dependencies": {
         "@0x/base-contract": "^3.0.13",
         "@0x/contracts-asset-proxy": "^2.2.3",
-        "@0x/contracts-tokens": "^1.0.6",
+        "@0x/contracts-erc20": "^1.0.6",
         "@0x/order-utils": "^3.1.2",
         "@0x/types": "^1.5.2",
         "@0x/typescript-typings": "^3.0.8",
diff --git a/contracts/multisig/src/index.ts b/contracts/multisig/src/index.ts
index d55f08ea2..ba813e7ca 100644
--- a/contracts/multisig/src/index.ts
+++ b/contracts/multisig/src/index.ts
@@ -1,2 +1,3 @@
 export * from './artifacts';
 export * from './wrappers';
+export * from '../test/utils';
diff --git a/contracts/multisig/src/wrappers/index.ts b/contracts/multisig/src/wrappers/index.ts
index 69abd62f2..43ab25704 100644
--- a/contracts/multisig/src/wrappers/index.ts
+++ b/contracts/multisig/src/wrappers/index.ts
@@ -1,2 +1,5 @@
+export * from '../../generated-wrappers/asset_proxy_owner';
 export * from '../../generated-wrappers/multi_sig_wallet';
 export * from '../../generated-wrappers/multi_sig_wallet_with_time_lock';
+export * from '../../generated-wrappers/test_asset_proxy_owner';
+export * from '../../generated-wrappers/test_reject_ether';
diff --git a/contracts/multisig/test/asset_proxy_owner.ts b/contracts/multisig/test/asset_proxy_owner.ts
index c7b7d997b..62081554b 100644
--- a/contracts/multisig/test/asset_proxy_owner.ts
+++ b/contracts/multisig/test/asset_proxy_owner.ts
@@ -19,16 +19,15 @@ import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
 
 import {
+    artifacts,
     AssetProxyOwnerAssetProxyRegistrationEventArgs,
     AssetProxyOwnerContract,
     AssetProxyOwnerExecutionEventArgs,
     AssetProxyOwnerExecutionFailureEventArgs,
     AssetProxyOwnerSubmissionEventArgs,
-} from '../generated-wrappers/asset_proxy_owner';
-import { TestAssetProxyOwnerContract } from '../generated-wrappers/test_asset_proxy_owner';
-import { artifacts } from '../src/artifacts';
-
-import { AssetProxyOwnerWrapper } from './utils/asset_proxy_owner_wrapper';
+    AssetProxyOwnerWrapper,
+    TestAssetProxyOwnerContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/multisig/test/multi_sig_with_time_lock.ts b/contracts/multisig/test/multi_sig_with_time_lock.ts
index 31c215505..b9b3732a7 100644
--- a/contracts/multisig/test/multi_sig_with_time_lock.ts
+++ b/contracts/multisig/test/multi_sig_with_time_lock.ts
@@ -16,17 +16,16 @@ import { LogWithDecodedArgs } from 'ethereum-types';
 import * as _ from 'lodash';
 
 import {
+    artifacts,
     MultiSigWalletWithTimeLockConfirmationEventArgs,
     MultiSigWalletWithTimeLockConfirmationTimeSetEventArgs,
     MultiSigWalletWithTimeLockContract,
     MultiSigWalletWithTimeLockExecutionEventArgs,
     MultiSigWalletWithTimeLockExecutionFailureEventArgs,
     MultiSigWalletWithTimeLockSubmissionEventArgs,
-} from '../generated-wrappers/multi_sig_wallet_with_time_lock';
-import { TestRejectEtherContract } from '../generated-wrappers/test_reject_ether';
-import { artifacts } from '../src/artifacts';
-
-import { MultiSigWrapper } from './utils/multi_sig_wrapper';
+    MultiSigWrapper,
+    TestRejectEtherContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts b/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
index 924a215db..b6040d8e3 100644
--- a/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
+++ b/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
@@ -1,6 +1,6 @@
 import { artifacts as proxyArtifacts } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import { LogDecoder } from '@0x/contracts-test-utils';
-import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
@@ -16,7 +16,7 @@ export class AssetProxyOwnerWrapper {
     constructor(assetproxyOwnerContract: AssetProxyOwnerContract, provider: Provider) {
         this._assetProxyOwner = assetproxyOwnerContract;
         this._web3Wrapper = new Web3Wrapper(provider);
-        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...tokensArtifacts, ...proxyArtifacts });
+        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...erc20Artifacts, ...proxyArtifacts });
     }
     public async submitTransactionAsync(
         destination: string,
diff --git a/contracts/multisig/test/utils/index.ts b/contracts/multisig/test/utils/index.ts
new file mode 100644
index 000000000..382fd92e5
--- /dev/null
+++ b/contracts/multisig/test/utils/index.ts
@@ -0,0 +1,2 @@
+export * from './asset_proxy_owner_wrapper';
+export * from './multi_sig_wrapper';
diff --git a/contracts/tokens/contracts/ZRXToken/ERC20Token_v1.sol b/contracts/tokens/contracts/ZRXToken/ERC20Token_v1.sol
deleted file mode 100644
index 4920c4aac..000000000
--- a/contracts/tokens/contracts/ZRXToken/ERC20Token_v1.sol
+++ /dev/null
@@ -1,44 +0,0 @@
-pragma solidity ^0.4.11;
-
-import { Token_v1 as Token } from "./Token_v1.sol";
-
-contract ERC20Token_v1 is Token {
-
-    function transfer(address _to, uint _value) returns (bool) {
-        //Default assumes totalSupply can't be over max (2^256 - 1).
-        if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
-            balances[msg.sender] -= _value;
-            balances[_to] += _value;
-            Transfer(msg.sender, _to, _value);
-            return true;
-        } else { return false; }
-    }
-
-    function transferFrom(address _from, address _to, uint _value) returns (bool) {
-        if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
-            balances[_to] += _value;
-            balances[_from] -= _value;
-            allowed[_from][msg.sender] -= _value;
-            Transfer(_from, _to, _value);
-            return true;
-        } else { return false; }
-    }
-
-    function balanceOf(address _owner) constant returns (uint) {
-        return balances[_owner];
-    }
-
-    function approve(address _spender, uint _value) returns (bool) {
-        allowed[msg.sender][_spender] = _value;
-        Approval(msg.sender, _spender, _value);
-        return true;
-    }
-
-    function allowance(address _owner, address _spender) constant returns (uint) {
-        return allowed[_owner][_spender];
-    }
-
-    mapping (address => uint) balances;
-    mapping (address => mapping (address => uint)) allowed;
-    uint public totalSupply;
-}
diff --git a/contracts/tokens/contracts/ZRXToken/Token_v1.sol b/contracts/tokens/contracts/ZRXToken/Token_v1.sol
deleted file mode 100644
index de619fb7e..000000000
--- a/contracts/tokens/contracts/ZRXToken/Token_v1.sol
+++ /dev/null
@@ -1,39 +0,0 @@
-pragma solidity ^0.4.11;
-
-contract Token_v1 {
-
-    /// @return total amount of tokens
-    function totalSupply() constant returns (uint supply) {}
-
-    /// @param _owner The address from which the balance will be retrieved
-    /// @return The balance
-    function balanceOf(address _owner) constant returns (uint balance) {}
-
-    /// @notice send `_value` token to `_to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return Whether the transfer was successful or not
-    function transfer(address _to, uint _value) returns (bool success) {}
-
-    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return Whether the transfer was successful or not
-    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}
-
-    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @param _value The amount of wei to be approved for transfer
-    /// @return Whether the approval was successful or not
-    function approve(address _spender, uint _value) returns (bool success) {}
-
-    /// @param _owner The address of the account owning tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address _owner, address _spender) constant returns (uint remaining) {}
-
-    event Transfer(address indexed _from, address indexed _to, uint _value);
-    event Approval(address indexed _owner, address indexed _spender, uint _value);
-}
-
diff --git a/contracts/tokens/contracts/ZRXToken/UnlimitedAllowanceToken_v1.sol b/contracts/tokens/contracts/ZRXToken/UnlimitedAllowanceToken_v1.sol
deleted file mode 100644
index bf1b0335a..000000000
--- a/contracts/tokens/contracts/ZRXToken/UnlimitedAllowanceToken_v1.sol
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity ^0.4.11;
-
-import { ERC20Token_v1 as ERC20Token } from "./ERC20Token_v1.sol";
-
-contract UnlimitedAllowanceToken_v1 is ERC20Token {
-
-    uint constant MAX_UINT = 2**256 - 1;
-
-    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.
-    /// @param _from Address to transfer from.
-    /// @param _to Address to transfer to.
-    /// @param _value Amount to transfer.
-    /// @return Success of transfer.
-    function transferFrom(address _from, address _to, uint _value)
-        public
-        returns (bool)
-    {
-        uint allowance = allowed[_from][msg.sender];
-        if (balances[_from] >= _value
-            && allowance >= _value
-            && balances[_to] + _value >= balances[_to]
-        ) {
-            balances[_to] += _value;
-            balances[_from] -= _value;
-            if (allowance < MAX_UINT) {
-                allowed[_from][msg.sender] -= _value;
-            }
-            Transfer(_from, _to, _value);
-            return true;
-        } else {
-            return false;
-        }
-    }
-}
diff --git a/contracts/tokens/contracts/ZRXToken/ZRXToken.sol b/contracts/tokens/contracts/ZRXToken/ZRXToken.sol
deleted file mode 100644
index 831e1822c..000000000
--- a/contracts/tokens/contracts/ZRXToken/ZRXToken.sol
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.11;
-
-// solhint-disable-next-line max-line-length
-import { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "./UnlimitedAllowanceToken_v1.sol";
-
-
-contract ZRXToken is 
-    UnlimitedAllowanceToken
-{
-
-    // solhint-disable const-name-snakecase
-    uint8 constant public decimals = 18;
-    uint256 public totalSupply = 10**27; // 1 billion tokens, 18 decimal places
-    string constant public name = "0x Protocol Token";
-    string constant public symbol = "ZRX";
-    // solhint-enableconst-name-snakecase
-
-    function ZRXToken()
-        public
-    {
-        balances[msg.sender] = totalSupply;
-    }
-}
diff --git a/contracts/utils/test/lib_bytes.ts b/contracts/utils/test/lib_bytes.ts
index 6fb859c67..daad28729 100644
--- a/contracts/utils/test/lib_bytes.ts
+++ b/contracts/utils/test/lib_bytes.ts
@@ -16,8 +16,7 @@ import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
 
-import { TestLibBytesContract } from '../generated-wrappers/test_lib_bytes';
-import { artifacts } from '../src';
+import { artifacts, TestLibBytesContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/contracts/utils/test/libs.ts b/contracts/utils/test/libs.ts
index 81596b2e4..77dc6e2ba 100644
--- a/contracts/utils/test/libs.ts
+++ b/contracts/utils/test/libs.ts
@@ -2,8 +2,7 @@ import { chaiSetup, provider, txDefaults, web3Wrapper } from '@0x/contracts-test
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import * as chai from 'chai';
 
-import { TestConstantsContract } from '../generated-wrappers/test_constants';
-import { artifacts } from '../src';
+import { artifacts, TestConstantsContract } from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/package.json b/package.json
index b5b5bed97..2e201f467 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
         "lint": "wsrun lint $PKG --fast-exit --parallel --exclude-missing"
     },
     "config": {
-        "contractsPackages": "@0x/contracts-asset-proxy @0x/contracts-exchange @0x/contracts-exchange-libs @0x/contracts-extensions @0x/contracts-multisig @0x/contracts-test-utils @0x/contracts-tokens @0x/contracts-utils",
+        "contractsPackages": "@0x/contracts-asset-proxy @0x/contracts-erc20 @0x/contracts-erc721 @0x/contracts-exchange @0x/contracts-exchange-libs @0x/contracts-extensions @0x/contracts-multisig @0x/contracts-test-utils @0x/contracts-utils",
         "mnemonic": "concert load couple harbor equip island argue ramp clarify fence smart topic",
         "packagesWithDocPages": "0x.js connect json-schemas subproviders web3-wrapper contract-wrappers order-utils order-watcher sol-compiler sol-coverage sol-profiler sol-trace ethereum-types asset-buyer migrations"
     },