Developing Substreams

These how-to guides walk through creating a Substreams that uses raw blockchain data to index your dapp. The application includes using Rust and Protobuf to extract, transform, and load the data.

Important: These how-to guides are in-depth walkthroughs of building highly performance indexers for your dapp. Less experienced users may want to reference the Tutorials for a quick start.

Tip: Speed up development by installing the Substreams agent skills in your AI coding assistant (Claude Code, Cursor, VS Code). The substreams-dev skill provides expert guidance on Rust modules, manifest configuration, protobuf design, and debugging.

Choose your ecosystem to get started:

• General - Cross-chain topics including local development, Rust, Protobuf, and agent skills

• EVM

• Solana

• Cosmos