A collective list of free Web3 ( related to the web3 ecosystem ) APIs for use in software and web development
Contributions are always welcome!
See contributing.md for ways to get started.
| API | Type | Auth | HTTPS | Cors | Links |
|---|---|---|---|---|---|
| BlockSpan | BlockSpan provides access to comprehensive NFT metadata, activity, pricing, and ownership information in real-time | apiKey |
Yes | Yes | API Docs |
| Bitquery | Onchain GraphQL APIs & DEX and NFT APIs | apiKey |
Yes | Yes | API Docs |
| Chainlink | Accessing off-chain data through chainlink API in smart contracts | No | Yes | Unknown | API Docs |
| Covalent | Token balances, positions and historical granular transaction data from blockchain networks | apiKey |
Yes | Unknown | API Docs |
| DappRadar | The DappRadar API provides live, spam-free, quality crypto, and blockchain data | apiKey |
Yes | Yes | API Docs |
| Moralis | Provides real-time blockchain data and Web3 Auth API | apiKey |
Yes | No | API Docs - API Key |
| OpenSea | Provides a developer platform consisting of an API, and SDK for interacting with NFT data | apiKey |
Yes | No | SDK - API Docs - API Key |
| Rarible | The Rarible Multichain Protocol is a decentralized toolset that simplifies the way developers can work with NFTs | apiKey |
Yes | Yes | SDK - API Docs - API Key |