Indexers

Subsquid

The Ethereum Virtual Machine and Substrate data are both natively and completely supported by Subsquid. This enables developers to handle EVM logs, Substrate entities (events, extrinsics, and storage items), on-chain data from any of the Moonbeam networks, and EVM logs in a single project before serving the resulting data through a single GraphQL API.

Data intake (archives) is separated from data transformation and presentation by the Subsquid services stack (squids). Archives use a standardized process to ingest and store unprocessed blockchain data.

Squids are ETL projects that ingest historical on-chain data from archives, transforming it according to user-defined data mappers. Squids are typically configured to present this data as a GraphQL API.

Implementation