{
 "service": "Multichain RPC for agents",
 "why": "Cheap factual chain lookups on Base, Polygon, Arbitrum, Optimism and Ethereum — the chains the current Bazaar leaders do not serve.",
 "chains": [
  "base",
  "polygon",
  "arbitrum",
  "optimism",
  "ethereum"
 ],
 "endpoints": [
  {
   "path": "/balance",
   "price_usdc": 0.002,
   "description": "Native coin and ERC-20 token balance for any wallet address on Base, Polygon, Arbitrum, Optimism or Ethereum. Returns raw and human-decimal amounts in one call.",
   "params": {
    "address": "0x0000000000000000000000000000000000000000",
    "chain": "base"
   }
  },
  {
   "path": "/token",
   "price_usdc": 0.002,
   "description": "ERC-20 token metadata: name, symbol, decimals and total supply for any token contract on Base, Polygon, Arbitrum, Optimism or Ethereum.",
   "params": {
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "chain": "base"
   }
  },
  {
   "path": "/nft",
   "price_usdc": 0.004,
   "description": "NFT metadata for ERC-721 and ERC-1155 tokens on Base, Polygon, Arbitrum, Optimism and Ethereum. Resolves tokenURI through IPFS, Arweave, data: URIs and public HTTPS, and returns the parsed metadata JSON.",
   "params": {
    "contract": "0x0000000000000000000000000000000000000000",
    "token_id": "1",
    "chain": "base"
   }
  },
  {
   "path": "/proxy",
   "price_usdc": 0.002,
   "description": "Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent, Beacon) for any contract and return the current implementation address. Essential before trusting or calling an unknown contract.",
   "params": {
    "address": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "chain": "polygon"
   }
  },
  {
   "path": "/tx",
   "price_usdc": 0.002,
   "description": "Transaction details and receipt by hash: status, block, from, to, value, gas used, effective gas price and decoded ERC-20 transfers.",
   "params": {
    "hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "chain": "base"
   }
  },
  {
   "path": "/gas",
   "price_usdc": 0.001,
   "description": "Live gas prices: EIP-1559 base fee plus low/medium/high priority tiers in gwei, and the estimated cost of a simple transfer.",
   "params": {
    "chain": "base"
   }
  }
 ],
 "free_preview": "/gas is free on Base to demonstrate liveness: /preview/gas?chain=base",
 "payTo": "0xCa03Fb4b1D2f66f5a83A5cA91021b874ac4a34a3",
 "networks": [
  "eip155:8453",
  "eip155:137"
 ]
}