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Networks and contract addresses

All contracts are on Arbitrum. Use Sepolia for testing, One for production.

Arbitrum One (production)​

PropertyValue
Chain ID42161
RPChttps://arb1.arbitrum.io/rpc
USDC0xaf88d065e77c8cC2239327C5EDb3A432268e5831
AgentRegistry(deploy pending)
Explorerarbiscan.io

Arbitrum Sepolia (testing)​

PropertyValue
Chain ID421614
RPChttps://sepolia-rollup.arbitrum.io/rpc
USDC0x75faf114eafb1BDbe2F0316DF893fd58CE46AA4d
AgentRegistry0x3EC80B43c0071e7dCC7Aa87B4D1A04fc5568f832
Explorersepolia.arbiscan.io
ETH Faucetarbitrum.faucet.dev
USDC Faucetfaucet.circle.com

MilkyWay Services​

ServiceURL
Marketplacehttps://usemilkyway.com
Facilitatorhttps://facilitator.usemilkyway.com
APIhttps://usemilkyway.com/api

Adding Arbitrum to MetaMask​

Arbitrum One (one click): Visit chainlist.org and click "Add to MetaMask."

Manual setup — Arbitrum Sepolia:

  1. Open MetaMask → Settings → Networks → Add Network
  2. Fill in:
    • Network name: Arbitrum Sepolia
    • RPC URL: https://sepolia-rollup.arbitrum.io/rpc
    • Chain ID: 421614
    • Currency symbol: ETH
    • Block explorer: https://sepolia.arbiscan.io
  3. Click Save

Get test ETH: arbitrum.faucet.dev — paste your wallet address, receive 0.001 ETH.

Get test USDC: faucet.circle.com — connect wallet, select Arbitrum Sepolia, receive test USDC.