# Services from x402-audit.tatschluizguilherme.workers.dev on Zero

> x402-audit.tatschluizguilherme.workers.dev serves 22 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/x402-audit.tatschluizguilherme.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-audit.tatschluizguilherme.workers.dev/health.json

## Services

- [Block Data (Base / Optimism / Ethereum Mainnet)](https://www.zero.xyz/c/block-data-base-optimism-ethereum-mainnet-97e25735/llms.txt): $0.1/call via x402. Returns block metadata — number, hash, timestamp, baseFee, gas usage, transaction count, proposer, and size — for any block on Base, Optimism, or Ethereum Mainnet
- [EIP-712 Typed Data Builder & Signer Recovery](https://www.zero.xyz/c/eip-712-typed-data-builder-signer-recovery-68dd78ac/llms.txt): $0.1/call via x402. Computes EIP-712 domainSeparator, hashStruct, and final digest from typed data, and optionally recovers the signer address via ecrecover — all offline with no RPC or API key
- [ABI Function/Event Selector Generator](https://www.zero.xyz/c/abi-function-event-selector-generator-41bcb66d/llms.txt): $0.1/call via x402. Computes the 4-byte function selector or 32-byte event topic0 from a human-readable Solidity signature using Keccak-256, with no RPC or API key required.
- [x402-audit Full Transaction Intel](https://www.zero.xyz/c/x402-audit-full-transaction-intel-ec129633/llms.txt): $0.1/call via x402. Returns complete transaction details for a given tx hash on Base, Optimism, or Ethereum Mainnet: raw tx data, receipt, decoded function call, event summary, gas costs, and confirmations in one call
- [x402-audit Wallet Snapshot](https://www.zero.xyz/c/x402-audit-wallet-snapshot-1ca21b4b/llms.txt): $0.1/call via x402. Returns a comprehensive one-call wallet snapshot including native ETH balance, curated and custom ERC-20 token balances, USD prices, and total wallet value across Base, Optimism, or Ethereum Mainnet
- [x402-audit Token Safety Audit (Base)](https://www.zero.xyz/c/x402-audit-token-safety-audit-base-120a4308/llms.txt): $0.25/call via x402. Performs a comprehensive on-chain safety audit of an ERC-20 token on Base, returning a 0-100 safety score plus verdict covering honeypot simulation, buy/sell/transfer taxes, liquidity, holders, source verification, proxy status, and owner renouncement.
- [Base Transaction Status Lookup](https://www.zero.xyz/c/base-transaction-status-lookup-8f2dd2d1/llms.txt): $0.1/call via x402. Returns on-chain receipt details for a given transaction hash on Base — including success/reverted status, block number, gas used, from/to addresses, value, and log count
- [x402-audit Wallet Balance (ETH/ERC-20)](https://www.zero.xyz/c/x402-audit-wallet-balance-eth-erc-20-77dbb373/llms.txt): $0.1/call via x402. Returns the native ETH or ERC-20 token balance of any wallet address on Base, Optimism, or Ethereum Mainnet, including decimals, formatted value, and current block number — without relying on a block explorer API.
- [Base Token Price Lookup (Uniswap V3 + Aerodrome V2)](https://www.zero.xyz/c/base-token-price-lookup-uniswap-v3-aerodrome-v2-3e0b5de0/llms.txt): $0.1/call via x402. Returns spot USD price, circulating supply, and market cap for up to 30 ERC-20 tokens on Base, computed on-chain from the most liquid DEX pool (Uniswap V3 or Aerodrome V2)
- [DEX Pair Discovery (Uniswap V2/V3 on Base/Optimism/Mainnet)](https://www.zero.xyz/c/dex-pair-discovery-uniswap-v2-v3-on-base-optimism-mainnet-e2aafe47/llms.txt): $0.1/call via x402. Discovers all Uniswap V2 and V3 liquidity pools for any ERC-20 token across Base, Optimism, and Ethereum Mainnet, returning per-pool pricing, liquidity, and reserve data computed directly on-chain.
- [ERC-20 Allowance Checker (Base / Optimism / Mainnet)](https://www.zero.xyz/c/erc-20-allowance-checker-base-optimism-mainnet-f737e0ac/llms.txt): $0.1/call via x402. Returns the on-chain ERC-20 allowance (how much a spender is permitted to transfer from an owner wallet) on Base, Optimism, or Ethereum Mainnet, including formatted amount, decimals, symbol, and block number.
- [x402-audit Calldata Decoder](https://www.zero.xyz/c/x402-audit-calldata-decoder-22286802/llms.txt): $0.1/call via x402. Decodes raw Ethereum transaction calldata (hex) offline, returning the 4-byte selector, matched function name, typed named arguments, and nested sub-call decoding — no RPC or API key required.
- [ENS Name Resolution (Forward & Reverse) on Ethereum/Base/Optimism](https://www.zero.xyz/c/ens-name-resolution-forward-reverse-on-ethereum-base-optimism-818cf8d8/llms.txt): $0.1/call via x402. Resolves ENS names to Ethereum addresses (forward) or Ethereum addresses to ENS names (reverse) across Mainnet, Base, and Optimism via on-chain registry lookup
- [ERC-20 Transfer History API (Base/Optimism/Mainnet)](https://www.zero.xyz/c/erc-20-transfer-history-api-base-optimism-mainnet-292fe78d/llms.txt): $0.1/call via x402. Fetches full ERC-20 transfer history (incoming and outgoing, all tokens) for any wallet address on Base, Optimism, or Ethereum Mainnet, with decoded transfer details and native ETH balance delta.
- [EVM Transaction Simulation (eth_call Pre-flight)](https://www.zero.xyz/c/evm-transaction-simulation-eth-call-pre-flight-87379691/llms.txt): $0.1/call via x402. Simulates an EVM transaction via eth_call on Base, Optimism, or Ethereum Mainnet before submission, returning success/failure, return data, decoded revert reason, and gas estimate
- [On-Chain Event Logs (eth_getLogs) — Base, Optimism, Ethereum](https://www.zero.xyz/c/on-chain-event-logs-eth-getlogs-base-optimism-ethereum-53b538cd/llms.txt): $0.1/call via x402. Fetches raw and decoded EVM event logs for any contract or wallet across Base, Optimism, or Ethereum Mainnet, with best-effort decoding of Transfer, Approval, and Uniswap V3 Swap events
- [x402 On-Chain Wallet Audit](https://www.zero.xyz/c/x402-on-chain-wallet-audit-62ec6d06/llms.txt): $0.25/call via x402. Returns native ETH balances, gas estimates, and recent transactions for a wallet address across Optimism, Base, and Ethereum Mainnet in a single call
- [On-Chain DEX Swap Quote (Base)](https://www.zero.xyz/c/on-chain-dex-swap-quote-base-9d7decc5/llms.txt): $0.1/call via x402. Returns swap quote (amountOut, spot price, price impact, minOut slippage guards) for any ERC-20 pair on Base using Uniswap V3 or Aerodrome V2 pool reserves
- [Gas Prices — Base, Optimism & Ethereum Mainnet](https://www.zero.xyz/c/gas-prices-base-optimism-ethereum-mainnet-37161a66/llms.txt): $0.1/call via x402. Returns live gas prices (gasPrice, maxPriorityFee EIP-1559) and latest block number for Base, Optimism, and/or Ethereum Mainnet via public RPCs.
- [Multicall3 Batch eth_call](https://www.zero.xyz/c/multicall3-batch-eth-call-5381a070/llms.txt): $0.1/call via x402. Executes up to 20 read-only Ethereum calls in a single batched request via the Multicall3 contract on Base, Optimism, or Ethereum Mainnet, returning per-call success flags, return data, block number, and gas estimate
- [ABI Selector Map Generator](https://www.zero.xyz/c/abi-selector-map-generator-d752a4f8/llms.txt): $0.1/call via x402. Generates a complete selector map from a contract ABI — 4-byte selectors for functions/errors and 32-byte topic0 for events — entirely offline with no RPC or API key required
- [x402-audit Calldata Encoder](https://www.zero.xyz/c/x402-audit-calldata-encoder-4b9af4fd/llms.txt): $0.1/call via x402. Encodes EVM function calls (by name or 4-byte selector + JSON arguments) into raw ABI-encoded calldata hex, with built-in round-trip decode verification, requiring no RPC or API key.

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)