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Blockchain & Web3 Infrastructure
Node providers, indexers, explorers and libraries for building onchain.
JSON: /api/v1/directory.json (filter on category=blockchain-infrastructure)
Coinbase Developer Platform
APIs and wallets for onchain payments, including tooling for agents that transact in stablecoins.
Free tierAPI keyPinata (IPFS)
IPFS file hosting API.
Free tierAPI keyEtherscan API
Ethereum explorer API.
Free tierAPI keyAlchemy
Blockchain node and data APIs.
Free tierAPI keyInfura
Ethereum RPC API.
Free tierAPI keyThe Graph
Indexing protocol for blockchain data.
Free tierAPI keyMoralis
Web3 data APIs.
Free tierAPI keyDune API
Onchain analytics queries.
Free tierAPI keyHelius
Solana APIs.
Free tierAPI keyBlockchair API
Multi-chain explorer API.
Free tierAPI keyethers.js
Ethereum JS library.
FreeNo authviem
TypeScript Ethereum interface.
FreeNo authQuickNode
Blockchain node provider.
Free tierAPI keyAnkr
RPC and Web3 APIs.
Free tierAPI keyChainstack
Managed blockchain nodes.
Free tierAPI keyHardhat
Ethereum development environment.
FreeNo authFoundry
Fast Ethereum toolkit.
FreeNo authweb3.js
Ethereum JavaScript library.
FreeNo authSolana Web3.js
Solana JavaScript SDK.
FreeNo authCovalent
Unified blockchain data API.
Free tierAPI keyThirdweb
Web3 development platform.
Free tierAPI key