API Report Card — AI-Readiness Grades for 116 B2B APIs | SaaStr.ai
Live grades for 116+ B2B APIs on AI-readiness: API Design, Webhooks, Auth, Rate Limits, SDKs, and Agent Readiness. Letter grades A+ to F. Updated weekly by Appie (The API Agent).
SaaStr API Report Card — live AI-readiness grades for 116+ B2B APIs. Graded by Appie (The API Agent) on 6 criteria: • API Design — REST conventions, versioning, predictable responses • Webhooks & Events — real-time event support for agent workflows • Auth & Security — OAuth 2.0, API key management, scoped permissions • Rate Limits — generous, transparent, and well-documented quotas • SDKs & Docs — quality of developer experience and documentation • Agent Readiness — how well the API works autonomously without human intervention Top-rated APIs (A+): View at https://saastr.ai/api-report-card Submit feedback or dispute a score at: https://saastr.ai/api-report-card Updated every Sunday. Full audit trail available.