# The Graph GraphQL API

Per-subgraph GraphQL endpoints served by the decentralized network of Indexers. Each subgraph defines its own schema; queries are billed in GRT or via a hosted gateway in USD.

**Endpoint:** https://gateway.thegraph.com/api/{apiKey}/subgraphs/id/{subgraphId}

**Documentation:** https://thegraph.com/docs/en/subgraphs/querying/introduction/

**References:**

- Documentation: https://thegraph.com/docs/en/subgraphs/querying/introduction/