Probe

Probe runs 32 automated compliance checks on any API endpoint in seconds. It verifies x402 payment protocol support, SSL/TLS security, CORS policies, ERC-8004 on-chain identity, DNSSEC, DMARC, OAuth/OIDC maturity, EU AI Act human oversight, API versioning, and more. Get a letter grade (A+ to F) with actionable fix guides. Free tier available. Built for developers, compliance teams, and AI agent platforms that need to verify API trust before integration.