# Agent Trust Firewall Free public pilot API for deterministic pre-action checks and data cleaning. OpenAPI: https://agent-trust-firewall.andrea-vignoni.workers.dev/openapi.json Catalog: https://agent-trust-firewall.andrea-vignoni.workers.dev/catalog.json POST /v1/trust/firewall - fail-closed evidence, data and spending policy gate POST /v1/trust/validate - structured JSON contract validation POST /v1/trust/spend-guard - budget and merchant policy checks POST /v1/data/clean - trim strings, remove duplicates and flag quality issues Send optional X-Agent-ID, X-Agent-Name, X-Agent-Source headers to help measure integration. Do not send credentials or personal data. No payment or API key needed in pilot. Responses are advisory; integrator must enforce BLOCK. Not factual verification or certified security.