Indexing protocols and data APIs that let you query decoded on-chain data programmatically — transaction history, token transfers, NFT metadata, and DeFi events without running full nodes.
All tools independently reviewed. Updated 2026. Affiliate links marked *.
The decentralized indexing protocol for querying blockchain data via GraphQL subgraphs
The Graph is the canonical decentralized indexing protocol for blockchain data, used by Uniswap, Aave, Compound, Balancer, and virtually every major DeFi protoc…
Web3 backend platform with pre-built NFT, token, and wallet APIs for rapid dApp development
Moralis is a Web3 backend platform that provides pre-indexed data APIs for the most common blockchain data needs — eliminating the need for developers to write …
Real-time blockchain data pipelines with subgraph hosting and Mirror streaming to any database
Goldsky is a blockchain data infrastructure company that offers two core products: managed subgraph hosting and Mirror, a real-time blockchain data streaming se…