Tokenlists

This repo contains lists of tokens mapped to the Polygon chains that may be used in certain interfaces.

Different Token Lists in JSON

The JSON schema for the tokens includes: chainId, name, address, decimals, symbol, logoURI (optional), tags (optional), and custom extensions metadata.

1. Mapped Tokens List Contains tokens that are mapped to Polygon PoS and Polygon zkEVM. Anyone can propose updates to this list.

2. Popular Tokens List Contains the top 100 most used tokens on the Polygon chains.

3. Testnet Tokens List contains the tokens mapped on the Mumbai chain.

4. Blacklist Tokens List Contains tokens that have been flagged for issues.

Adding or Updating a token

1. Fork the repository

2. Add the new token at the end of the token array in src/tokens/polygonTokens.json

   Please make sure that the new token follows this schema.

   {
       "chainId": 137, // Chain Id of the L2 chain
       "name": "token_name",
       "symbol": "token_symbol",
       "decimals": "<token_decimals>",
       "address": "token_address on Polygon",
       "logoURI": "token_icon_uri",
       "tags": ["<bridge>", "<token_type>", "<optional_tag>", "<optional_tag>", ...], // For all acceptable tags, check the below list
       "extensions": {
           "originTokenAddress": "token_address on the origin chain", // If not deployed on ethereum, add noDeposit and noWithdraw tags
           "originTokenNetwork": "id of the token's origin chain", // Use 0 for Ethereum, 1 for zkEVM, -1 for PoS
           "wrappedTokenNetwork": "id of the wrapper token's chain", // Only for tokens bridged via LxLy bridge (zkEVM)
           "project": {
               "name": "Project_Name",
               "summary": "Short_Project_Description",
               "contact": "Project_Support",
               "website": "Project_Website"
           },
           "originChainBridgeAdapter": "Bridge adapter contract address on origin chain", // Only required for tokens bridged using zkEVM messaging layer
           "wrapperChainBridgeAdapter": "Bridge adapter contract address on wrapper chain" // Only required for tokens bridged using zkEVM messaging layer
       }
   }
   

   Tags

   1. stablecoin: Tokens that are pegged to a fiat asset, e.g. USDC, USDT

   2. swapable: Tokens are eligible for swapping through the 0x contracts

   3. native: Tokens are native tokens of the chain

   4. erc20: Tokens are of ERC20 token type

   5. pos: Tokens that are bridged using the PoS bridge Note: Also use this tag if the tokens cannot be bridged.

   6. fx: Tokens that are bridged using the FX or custom FX bridge

   7. plasma: Tokens that are bridged using the PLASMA bridge

   8. lxly: Tokens that are bridged using the LxLy bridge (zkEVM)

   9. metaTx: Tokens are eligible for meta transactions Note: Use this tag if the tokens support meta transactions and can be used for a gasless swaps.

   10. customSig: The token has its custom withdraw event signature and does not depend on the transfer event signature while verifing withdrawals

   11. noDeposit: Tokens are not eligible for deposits from Ethereum Note: Also use this tag if the tokens cannot be bridged.

   12. noWithdraw: Tokens are not eligible for withdrawals back to Ethereum Note: Also use this tag if the tokens cannot be bridged.

   13. customZkevmBridge: Tokens that are bridged using zkEVM messaging layer

3. Run linter and fix the issues if any

   npm run lint
   

   npm run lint:fix
   

4. Make sure that the tests are passing and the tokenlist builds

   npm run test
   

   npm run build
   

5. Commit the changes and raise a Pull request to our repo's dev branch

Disclaimer

After raising a PR, please allow us some time to verify the PR. We do not follow any particular order in reviewing token additions and updations.