Permit2 Addresses

Canonical Address

All chains use the same address:

0x000000000022D473030F116dDEE9F6B43aC78BA3

By Chain ID

Chain	Chain ID	Status
Ethereum Mainnet	1	✅
Arbitrum	42161	✅
Optimism	10	✅
Base	8453	✅
Polygon	137	✅
Avalanche	43114	✅
BNB Chain	56	✅
Sepolia (testnet)	11155111	✅
Arbitrum Sepolia	421614	✅
Base Sepolia	84532	✅
Optimism Sepolia	11155420	✅
Foundry (local)	31337	✅

Usage in Code

import { PERMIT2_ADDRESS } from '@uniswap/permit2-sdk'

// Or hardcoded (canonical)
const PERMIT2 = '0x000000000022D473030F116dDEE9F6B43aC78BA3'

Dynamic Address (Optional)

import { permit2Address } from '@uniswap/permit2-sdk'

const permit2 = permit2Address(chainId)

Frontend Integration

The frontend stores addresses in:

frontend/app/addresses/{chain}/base_deployments.json

Example usage:

import platformSepolia from './app/addresses/sepolia/base_deployments.json'
import platformFoundry from './app/addresses/anvil_base_main/base_deployments.json'

const permit2Address = chainId === sepolia.id 
  ? platformSepolia.permit2 
  : platformFoundry.permit2