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• Reqistry is now API intelligence for you & your AI agents • Side-by-side compare, trust scores, and live health • Watchlists with health alerts, agent API keys + MCP • Bug fixes and performance improvements
APIs for you & AI agents: discover, compare, trust, connect.
Reqistry is API intelligence for you — and your AI agents. Discover 3,500+ public APIs across AI, agent tools, finance, weather, music, security, productivity, games, health, education, and more. Don't just find APIs — evaluate them before you build. Every API shows trust signals: live platform-observed health, trust score, authentication requirements, pricing, HTTPS and CORS support. COMPARE, DON'T GUESS Pick 2–8 APIs and compare trust, pricing, speed, and uptime side by side, backed by live evidence. MONITOR WHAT YOU SHIP Save APIs to watchlists with daily health digests and alerts when trust scores drop. The change feed tracks health, pricing, and trust events across the whole catalog. ORGANIZE AND CONTRIBUTE Group APIs into projects, keep favorites in sync, and submit new APIs to grow the catalog. BUILT FOR AI AGENTS Create agent API keys in Settings and connect your agents through MCP (Settings → MCP), so your agents query the same trusted catalog you see. Free discovery, no subscriptions. The app is ad-supported with a banner and clearly labeled native ads. Your ad choices are collected before any ad loads (Google UMP) and can be revisited anytime in Settings → Privacy choices.