# Services from x402-extract-wg5z.onrender.com on Zero

> x402-extract-wg5z.onrender.com serves 3 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-extract-wg5z.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402-extract-wg5z.onrender.com/health.json

## Services

- [x402-changed](https://www.zero.xyz/c/x402-changed-e1aacb0a/llms.txt): $0.008/call via x402. Performs a deterministic line diff of any public URL's current content against previously seen text, returning added/removed lines and change detection.
- [x402-balance](https://www.zero.xyz/c/x402-balance-2d9cdaf0/llms.txt): $0.003/call via x402. Returns the native ETH balance of any wallet address on the Base network, in both wei and ETH, along with the block number at which it was read.
- [x402-block](https://www.zero.xyz/c/x402-block-b50e9ae3/llms.txt): $0.002/call via x402. Returns the latest Base blockchain block number, hash, and timestamp in a single machine-readable GET call, priced at $0.002 USDC per request via x402 protocol.

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)