Overview

Introduction to the Fuel GraphQL API

The Fuel GraphQL API allows you to query the Fuel blockchain for a wide range of on-chain data. It can be used to query transactions, balances, block information, and more. You can also use it to simulate and submit transactions on the Fuel network.

GraphQL Playground

The playground is an interactive and graphical IDE that includes a reference for queries, mutations, and types. It also provides query validation and context for the underlying GraphQL schema.

You can test out the Fuel GraphQL API playground here:

Testnet: https://testnet.fuel.network/v1/playground Icon Link

Mainnet: https://mainnet.fuel.network/v1/playground Icon Link

RPC Endpoint

These are the RPC endpoints you can use in your applications to interact with the Fuel blockchain, whether it's retrieving on-chain data or sending transactions:

Testnet: https://testnet.fuel.network/v1/graphql Icon Link

Mainnet: https://mainnet.fuel.network/v1/graphql Icon Link

Note that this is the same endpoint used in the playground above.

Chain Id

A chain ID is a unique identifier assigned to a blockchain network, whether a testnet or a mainnet (Fuel Ignition), to ensure correct transaction signing and prevent replay attacks across chains.

Testnet: 0 Icon Link

Mainnet: 9889 Icon Link