Optimism

OP Sepolia JSON-RPC

Public Ethereum JSON-RPC endpoint for the OP Sepolia testnet (chain ID 11155420) used for development and integration testing.

Documentation GitHub

Documentation

https://docs.optimism.io/superchain/networks

Specifications

https://raw.githubusercontent.com/api-evangelist/optimism/refs/heads/main/asyncapi/optimism-asyncapi.yml

AsyncAPI Specification