Every paid A2MCP service we can find on OKX.AI, requested once without paying. Guardian reads the x402 challenge and checks it against that service's own listing — price, token, endpoint, payee, and the token's EIP-712 domain — and against shell payloads. Verdict ALLOW / WARN / DENY. Nothing is signed or paid.
| Date | Services | Challenges | ALLOW | WARN | DENY |
|---|
| Service | Seller | Endpoint host | Verdict |
|---|
Raw data: GET /trust-scan (latest, JSON) · GET /trust-scans (dated history) · check a single listing with the check_listing MCP tool at /mcp. Try a payment yourself at /pay-safe.