Get started
Build and run your first Subsquid indexer in fifteen minutes or less.
QuickstartOverview
A bird's eye view of Subsquid architecture

Build a Squid
Extract, transform, and serve on-chain data with GraphQL

Run a Squid
Test your squid locally or run it with Docker

Deploy a Squid
Deploy your squid to the Aquarium (free of charge)

Query a Squid
A reference of GraphQL queries and filters exposed by squids

Dev Support
Get your questions answered and connect with other SquidDevs

Highlights
Index EVM data
Index EVM smart contracts on chains like Ethereum, Polygon, BSC.
Index Substrate data
Learn how to build a simple squid for a Substrate-based chain.
Promote to production
Switch between squid versions with zero downtime
WASM smart contracts
Index WASM contracts developed with Ink!
GraphQL subscriptions
Live query updates with GraphQL subscriptions
Frontier EVM data
Index data from Substrate EVM chains like Moonbeam and Astar.
Migration
FAQMore questions? Check out our extensive FAQ