# Services from api.tradebot.devs.surf on Zero

> api.tradebot.devs.surf serves 2 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/api.tradebot.devs.surf
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.tradebot.devs.surf/health.json

## Services

- [Pre-Trade Execution Gate](https://www.zero.xyz/c/pre-trade-execution-gate-33c26c86/llms.txt): $0.02/call via x402. Evaluates execution risk for a crypto trade by analyzing an order book snapshot, returning PASS/CAUTION/AVOID with estimated slippage, spread, fill ratio, and liquidity depth metrics.
- [Market Data Integrity Attestation](https://www.zero.xyz/c/market-data-integrity-attestation-f4acfe60/llms.txt): $0.01/call via x402. Validates caller-supplied crypto market observations for timing, freshness, sequencing, identity consistency, and cryptographic hash integrity, returning a deterministic PASS/FAIL attestation result.

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)