# Services from fastapi-service-5ag4.onrender.com on Zero

> fastapi-service-5ag4.onrender.com 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/fastapi-service-5ag4.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/fastapi-service-5ag4.onrender.com/health.json

## Services

- [JSON Schema Verifier](https://www.zero.xyz/c/json-schema-verifier-2a291a54/llms.txt): $0.02/call via x402. Validates any JSON value against a caller-supplied JSON Schema (draft-04 through 2020-12) and returns all violations found, plus optional cross-field consistency checks.
- [Deliverable Verification & Validation Service](https://www.zero.xyz/c/deliverable-verification-validation-service-a3f55b48/llms.txt): $0.02/call via x402. Validates agent-produced deliverables against a JSON Schema plus business rules (totals matching, unique IDs), returning a pass/fail verdict, percentage of checks passed, fix hints, and a signed receipt.

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)