Skip to content
Visit Covalent docs on GitHub
Set theme to dark (⇧+D)
Covalent docs

API Changelog

Every change to our API matters and reflects our belief in one of the following guiding principles which we include as tags on each changelog item:

  • <multichain> - one unified API for all chains
  • <data-accessibility> - access to any blockchain data at any time with greater detail.
  • <no-code> - support for non-devs

2021-03-30

Added

  • Integrated Fantom chain! Fantom is a high-performance, scalable, customizable, and secure smart-contract platform. Fantom is permissionless, decentralized, and open-source while achieving fast finality (1-2 second transaction confirmation) and low fees ($0.00001). Furthermore, Fantom is EVM-compatible. ChainID: 250. <multichain>

  • SushiSwapService Feature - Add swaps to Get Sushiswap address exchange liquidity transactions. <data-accessibility>

  • Added NFT support for OPENSEA store front, Rariable, Zora, Hashmasks, Cryptopunks. With new endpoints. <data-accessibility>

    • Get external NFT metadata /v1/{chain_id}/tokens/{address}/nft_metadata/{token_id}/
    • Get NFT Token IDs /v1/{chain_id}/tokens/{address}/nft_token_ids/
    • Get NFT Transactions /v1/{chain_id}/tokens/{address}/nft_transactions/{token_id}/
  • New Endpoint /v1/{chain_id}/address/{address}/portfolio_v2/ to Calculate historical portfolio value over time. With this new feature, organizations can get the USD value of all the ERC20 tokens in their wallet over the last 30 days with a 24 hour granularity. <data-accessibility>

  • Avalanche C-Chain has been indexed and is now ready for production use case. We are thrilled to be supporting Avalanche. Avalanche is the first smart contracts platform that confirms transactions instantly, supports the entirety of the Ethereum development toolkit, and enables millions of independent validators to participate as full block producers. <multichain>

Fixed

2021-02-28

Added

  • Binance Smart Chain (BSC) has been indexed and is now ready for beta testing. BSC is one of the most promising up-and-coming blockchains and we are thrilled to be supporting it. <multichain>

  • New endpoint: Show all NFT token IDs by contract address <data-accessibility>

  • Token balances endpoint now displays the token classification (ie. ERC20, ERC721, ERC1155, etc.). <no-code> <data-accessibility>

  • Topic Hash Calculator - can find the topic hashes that are available in any smart contract address. <no-code> <data-accessibility>

  • Uniswap Network V2 Assets endpoint now has an updated_at field to display when the last time the data was refreshed. <data-accessibility>

Fixed

2021-01-26

Added

  • SushiSwap balances and log events are now available to serve up data for one of the largest DeFi exchanges. <data-accessibility>

  • Aave V2 balances and network assets are now available to add to our existing support for one of the most promising projects in DeFi. <data-accessibility>

  • All Class A endpoints now support CSV format. Simply append &format=csv to the URL to get your API response as CSV. <no-code>

  • Matic MainNet and Matic Mumbai TestNet are now live. For more info, check out our docs on the Matic network: Matic Network. <multichain>

  • New NFT metadata endpoint providing ERC721 and ERC1155 metadata is now available. For more information on how to access NFT data, check out the Working with NFTs case study. <data-accessibility>

Changed

Deprecated

Removed

Fixed

Security