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Substreams
Network infrastructure

Substreams

Indexing & data APIs

Indexing · Real-time data · Performance optimization

streamingfast/substreams (opens in a new tab)

Substreams is a parallelized streaming data engine for blockchain data built on Firehose. Data builders write Substreams modules when a pipeline needs to process large ranges of blocks in parallel.

Related resources

Ponder

Ponder

Ponder is an indexing framework for crypto apps with an emphasis on fast refresh and developer ergonomics when you are serving fresh chain data to a product backend or frontend.

rindexer

rindexer

rindexer is an app-focused indexer framework with GraphQL and Postgres ergonomics when you need reliable chain-to-API pipelines without bespoke ETL glue.

Envio

Envio

Envio is a multichain indexing framework with TypeScript, JavaScript, or ReScript handlers that syncs over HyperSync rather than RPC when you need one Postgres-backed GraphQL API across several EVM chains.

The Graph

The Graph

The Graph is a decentralized indexing protocol where builders deploy subgraphs and query them over GraphQL. Builders use it to turn contract events into a queryable API without running their own indexer.

Covalent (GoldRush)

Covalent, delivered as GoldRush, is a unified REST API for historical onchain data across many chains. Builders call it when an application needs normalized balances, transfers, and history without writing a chain-specific indexer.

Moralis

Moralis offers web3 data APIs together with webhook-first event streams. Builders call its REST endpoints for wallet, token, NFT, and price data on Ethereum mainnet and subscribe to Streams webhooks for events.