All Chains
O

OP Mainnet

evm

Optimistic rollup from Optimism Collective

Chain ID: 10

Networks

Available networks for OP Mainnet. Use mainnet for production and testnets for development.

Mainnet

Production

Chain ID: 10

RPC: https://optimism-mainnet.rpc.bootnode.dev

Sepolia

Testnet

Chain ID: 11155420

RPC: https://optimism-sepolia.rpc.bootnode.dev

Supported APIs

Everything you need to build on OP Mainnet, available through a single API key.

JSON-RPC
WebSocket
Token API
NFT API
Transfers API
Webhooks
Debug & Trace
Flashblocks API

Chain Features

Key capabilities and characteristics of OP Mainnet.

OP Stack
Superchain
Flashblocks API

Quick Start

Send your first request to OP Mainnet in under a minute.

cURL
eth_blockNumber
curl -X POST https://optimism-mainnet.rpc.bootnode.dev \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_blockNumber",
    "params": []
  }'

Pricing

OP Mainnet is included in all Bootnode plans. Start free and scale as you grow.

Free

$0/mo

100M compute units per month. Perfect for getting started.

Growth

Popular

$99/mo

1B compute units per month. All chains and APIs included.

Enterprise

Custom

Dedicated infrastructure with 99.999% SLA and 24/7 support.

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