# Services from base-gas-x402-production.up.railway.app on Zero

> base-gas-x402-production.up.railway.app serves 4 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/base-gas-x402-production.up.railway.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/base-gas-x402-production.up.railway.app/health.json

## Services

- [Base Gas Price API (x402)](https://www.zero.xyz/c/base-gas-price-api-x402-8c821b14/llms.txt): $0.005/call via x402. Returns live Base mainnet gas prices including base fee, priority fees, and estimated transfer costs, gated by x402 micropayment.
- [Base Gas Oracle (x402)](https://www.zero.xyz/c/base-gas-oracle-x402-d4a79a14/llms.txt): $0.01/call via x402. Returns live EIP-1559 gas fee tiers and estimated transaction costs for Base mainnet, payable per-call via x402.
- [Base Gas Cheapest Window Oracle (x402)](https://www.zero.xyz/c/base-gas-cheapest-window-oracle-x402-cf83f6ac/llms.txt): $0.02/call via x402. Returns hourly gas price averages for Base mainnet over a configurable lookback window to identify the cheapest and most expensive hours to transact.
- [Base Gas History Oracle (x402)](https://www.zero.xyz/c/base-gas-history-oracle-x402-4f12a60f/llms.txt): $0.012/call via x402. Returns historical gas price data for Base mainnet over a configurable lookback window, including a statistical summary and a cheap/normal/expensive verdict, gated via x402 micropayment.

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)