Every onchain app needs data — but how you index it matters. The Graph ecosystem gives you two tools: Subgraphs (built-in GraphQL, 15,000+ ready to fork, great for dApps) and Substreams (parallel processing via Firehose, built for high-volume data, ML, analytics).

The simple rule: Subgraphs for queries, Substreams for scale. And with substreams-convert, moving between them is easier than ever.