# Services from tripguard-fare-intel.onrender.com on Zero

> tripguard-fare-intel.onrender.com serves 14 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/tripguard-fare-intel.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/tripguard-fare-intel.onrender.com/health.json

## Services

- [ERC-20 Token Balance Lookup (Base Chain)](https://www.zero.xyz/c/erc-20-token-balance-lookup-base-chain-b78e6331/llms.txt): $0.12/call via x402. Returns the ERC-20 token balance for a given wallet address on Base, defaulting to USDC.
- [TripGuard Fare Intelligence – Chain Token Info](https://www.zero.xyz/c/tripguard-fare-intelligence-chain-token-info-e883f04e/llms.txt): $0.12/call via x402. Retrieves on-chain token metadata (name, symbol, decimals, total supply) for a given token address on the Base network
- [TripGuard Fare Intelligence](https://www.zero.xyz/c/tripguard-fare-intelligence-efbd93f1/llms.txt): $0.12/call via x402. Searches for real-time airfare intelligence including flight price-drop predictions, fare-fraud detection, deal legitimacy verification, and verified booking links for any route and date.
- [TripGuard Fare Intelligence – Chain Nonce](https://www.zero.xyz/c/tripguard-fare-intelligence-chain-nonce-88ed41bd/llms.txt): $0.12/call via x402. Returns the current blockchain nonce for a given wallet address, used to authorize pay-per-call USDC payments on Base for airfare intelligence requests.
- [TripGuard Fare Intelligence – Transaction Lookup](https://www.zero.xyz/c/tripguard-fare-intelligence-transaction-lookup-5118f967/llms.txt): $0.12/call via x402. Looks up the status and details of a blockchain transaction by hash on the Base network, typically used to verify USDC payment for a TripGuard API call.
- [TripGuard Fare Intelligence – Cryptographic Hash](https://www.zero.xyz/c/tripguard-fare-intelligence-cryptographic-hash-3cac8b74/llms.txt): $0.12/call via x402. Computes cryptographic digests (SHA-256, SHA-512, Keccak-256) of an input string, returning hex-encoded hash values and byte length.
- [Base64 Encode/Decode](https://www.zero.xyz/c/base64-encode-decode-56edac86/llms.txt): $0.12/call via x402. Encodes or decodes a string using Base64 (standard or URL-safe variant)
- [TripGuard Fare Intelligence – ETH Balance Lookup](https://www.zero.xyz/c/tripguard-fare-intelligence-eth-balance-lookup-4a87d339/llms.txt): $0.12/call via x402. Returns the ETH balance (in wei and ether) for a given Ethereum wallet address on the Base network
- [TripGuard Fare Intelligence – Base Gas Price Feed](https://www.zero.xyz/c/tripguard-fare-intelligence-base-gas-price-feed-5da05a26/llms.txt): $0.12/call via x402. Returns the current Base blockchain gas price (in Wei and Gwei) and latest block number, used to estimate transaction costs for x402 pay-per-call payments.
- [TripGuard Fare Intelligence](https://www.zero.xyz/c/tripguard-fare-intelligence-ddd10bc2/llms.txt): $0.12/call via x402. Checks an Ethereum address for contract bytecode size and deployment status on Base
- [TripGuard Fare Intelligence Echo](https://www.zero.xyz/c/tripguard-fare-intelligence-echo-5760c003/llms.txt): $0.12/call via x402. Echoes back a submitted text message with a SHA-256 hash and timestamp — the actual transport/test endpoint underlying the TripGuard fare intelligence service.
- [Base Blockchain Block Lookup](https://www.zero.xyz/c/base-blockchain-block-lookup-d88129d3/llms.txt): $0.12/call via x402. Retrieves block metadata (hash, number, gas used, timestamp, transaction count) for a specified block height on the Base blockchain, or the chain head if no block number is provided.
- [TripGuard Fare Intelligence](https://www.zero.xyz/c/tripguard-fare-intelligence-0bcab091/llms.txt): $0.12/call via x402. Generates UUIDs for session or request tracking, despite being labeled as airfare intelligence — actual response schema returns only UUID arrays
- [TripGuard Fare Intelligence – Current Time](https://www.zero.xyz/c/tripguard-fare-intelligence-current-time-d3c95485/llms.txt): $0.12/call via x402. Returns the current server timestamp in multiple formats (ISO 8601, Unix, Unix ms, RFC 2822)

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)