# Services from chain-read.frcompanycheck.workers.dev on Zero

> chain-read.frcompanycheck.workers.dev serves 6 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/chain-read.frcompanycheck.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/chain-read.frcompanycheck.workers.dev/health.json

## Services

- [EVM Chain Read – ERC-20 Allowance](https://www.zero.xyz/c/evm-chain-read-erc-20-allowance-09b2a90b/llms.txt): $0.002/call via x402. Returns the ERC-20 token allowance that a spender is approved to transfer on behalf of an owner, on Base or Robinhood Chain, paid per-call via x402 USDC.
- [EVM Chain Read – ERC-20 Balance Lookup (x402)](https://www.zero.xyz/c/evm-chain-read-erc-20-balance-lookup-x402-d427f5bb/llms.txt): $0.002/call via x402. Returns the ERC-20 token balance and decimals for a given holder address on a specified EVM chain (Base or Robinhood Chain), paid per-call via x402 USDC micropayment.
- [EVM Chain Read – ERC-20 Token Metadata](https://www.zero.xyz/c/evm-chain-read-erc-20-token-metadata-b13e5d94/llms.txt): $0.002/call via x402. Fetches ERC-20 token metadata (symbol, decimals, name) for a given token address on Base or Robinhood Chain via a pay-per-call x402 micro-payment API
- [EVM Chain Read – Is-Contract Check (x402)](https://www.zero.xyz/c/evm-chain-read-is-contract-check-x402-749712cb/llms.txt): $0.002/call via x402. Returns the deployed bytecode size and a boolean indicating whether the given address is a smart contract on Base or Robinhood Chain, paid per-call via x402 USDC.
- [EVM Chain Read – Native Balance Lookup (x402)](https://www.zero.xyz/c/evm-chain-read-native-balance-lookup-x402-ee1095d3/llms.txt): $0.002/call via x402. Returns the native token balance (e.g. ETH) for a given address on Base (chain 8453) or Robinhood Chain (4663), paid per-call via x402 USDC micropayment.
- [EVM Chain Read – Block Tip (x402)](https://www.zero.xyz/c/evm-chain-read-block-tip-x402-2f3625e5/llms.txt): $0.002/call via x402. Returns the current block number and gas price for a specified EVM chain (Base or Robinhood Chain) via a pay-per-call x402 micropayment API.

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)