Optimism

OP Mainnet JSON-RPC

Public Ethereum JSON-RPC endpoint for OP Mainnet (chain ID 10). Supports standard eth_* methods plus Optimism extensions for L1 fee estimation, deposit tracking, and withdrawal proving. Public endpoint is rate-limited and does not provide WebSockets; production teams front it with Alchemy, QuickNode, Infura, or self-hosted op-geth + op-node.

OP Mainnet JSON-RPC is one of 9 APIs that Optimism publishes on the APIs.io network.

Tagged areas include JSON-RPC, Mainnet, and OP Mainnet. The published artifact set on APIs.io includes API documentation.

GitHub

Documentation

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

API entry from apis.yml

apis.yml Raw ↑ 
aid: optimism:mainnet-rpc
name: OP Mainnet JSON-RPC
description: Public Ethereum JSON-RPC endpoint for OP Mainnet (chain ID 10). Supports standard eth_* methods
  plus Optimism extensions for L1 fee estimation, deposit tracking, and withdrawal proving. Public endpoint
  is rate-limited and does not provide WebSockets; production teams front it with Alchemy, QuickNode,
  Infura, or self-hosted op-geth + op-node.
humanURL: https://docs.optimism.io/superchain/networks
baseURL: https://mainnet.optimism.io
tags:
- JSON-RPC
- Mainnet
- OP Mainnet
properties:
- type: Documentation
  url: https://docs.optimism.io/superchain/networks