# Services from 402rpc.com on Zero

> 402rpc.com serves 5 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/402rpc.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/402rpc.com/health.json

## Services

- [402rpc ENS Resolver](https://www.zero.xyz/c/402rpc-ens-resolver-cd4d910a/llms.txt): $0.001/call via x402. Resolves ENS names to Ethereum addresses (forward lookup) or Ethereum addresses to their verified primary ENS names (reverse lookup) using a full Ethereum mainnet node.
- [402rpc ETH/BTC Spot Price (Uniswap v3 On-Chain)](https://www.zero.xyz/c/402rpc-eth-btc-spot-price-uniswap-v3-on-chain-5c1a2dd9/llms.txt): $0.001/call via x402. Returns the real-time on-chain spot price of ETH or BTC in USDC, read directly from the deepest Uniswap v3 pools on Ethereum mainnet via an independent full node.
- [402rpc Ethereum Gas Price Oracle](https://www.zero.xyz/c/402rpc-ethereum-gas-price-oracle-28495d58/llms.txt): $0.001/call via x402. Returns real-time Ethereum mainnet gas prices including latest block, base fee, historical priority fee percentiles (10th/50th/90th) over the last 20 blocks, and suggested max fees for slow/normal/fast transaction inclusion — all in gwei.
- [402rpc Ethereum Wallet Balance Checker](https://www.zero.xyz/c/402rpc-ethereum-wallet-balance-checker-08646767/llms.txt): $0.002/call via x402. Returns ETH and major ERC-20 token balances (USDC, USDT, DAI, WETH, WBTC, stETH, LINK, UNI) for a given Ethereum address at the latest block, read directly from a full node.
- [402rpc Ethereum JSON-RPC](https://www.zero.xyz/c/402rpc-ethereum-json-rpc-4662478a/llms.txt): $0.001/call via x402. Executes Ethereum mainnet JSON-RPC calls (eth_, net_, web3_ methods) via a pay-per-call independently operated full node, with no API key required.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)