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GraphQL

Erigon implements the Ethereum GraphQL interface originally introduced in EIP-1767. The schema is maintained in the ethereum/execution-apis repository, kept in sync with client implementations such as Geth and Besu. Erigon follows that schema.

Enabling GraphQL​

GraphQL is disabled by default. Enable it with the --graphql flag:

./erigon --graphql

GraphQL shares the same port as the HTTP JSON-RPC server (default 8545). It does not use --http.api — --graphql is its own toggle.

Endpoints​

EndpointPurpose
http://localhost:8545/graphqlGraphQL API endpoint
http://localhost:8545/graphql/uiGraphiQL browser UI for interactive queries

Schema Reference​

Erigon follows the GraphQL schema maintained in ethereum/execution-apis, which is kept in sync with major clients such as Geth and Besu. For human-readable field descriptions and query examples, the Geth GraphQL reference is a useful companion.

The schema includes queries for blocks, transactions, accounts, logs, and pending state, as well as the sendRawTransaction mutation.

Example Query​

{
  block(number: 21000000) {
    hash
    number
    timestamp
    transactions {
      hash
      from { address }
      to { address }
      value
    }
  }
}
curl -X POST http://localhost:8545/graphql \
  -H "Content-Type: application/json" \
  -d '{"query": "{ block(number: 21000000) { hash number } }"}'
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