API intelligence for builders & agents · live catalog · trust signals
Find APIs you can trust.
Monitor the ones you use.
Reqistry catalogs public APIs and adds production signals so humans and AI agents make the same good decision: whether an API is safe to build on, and what to use instead when it isn’t. The same data powers the web catalog, the Android app, the public JSON API, and the MCP server.
One catalog, four surfaces
Web catalog
reqistry.dev/categories → browse & compare
No install
Android
Save stacks + health alerts on the go
Play Store
MCP
Agents query the same catalog live
13 tools
JSON API
api.reqistry.dev — no auth for reads
REST
What Reqistry gives you
Discover
Live catalog — filter the full catalog by pricing, auth, CORS, and live health. No account needed to browse.
Trust score
0–100 grade on uptime, latency, docs quality, auth clarity, CORS, pricing clarity, freshness, OpenAPI.
Compare
Side-by-side tables: pricing, auth, rate limits, SDKs, CORS, health, verification, warnings.
Monitor
My Stack + change feed + health history. Downtime, docs moves, pricing edits surface in /changelog.
Stacks
Save APIs into project stacks on web + Android. Turn discoveries into shippable shortlists.
MCP for agents
13 tools so Claude/Cursor/Codex can research, vet, and swap APIs inside the IDE.
Try the API
curl
curl https://api.reqistry.dev/v1/categories | head -c 400
# → { "data": [{ "slug": "weather", "name": "Weather", "apiCount": 42 }, …] }
curl "https://api.reqistry.dev/search?q=weather&pricing=free&cors=yes&limit=3"
curl https://api.reqistry.dev/v1/apis/open-meteoBase URL https://api.reqistry.dev · Reads need no auth. Writes need bearer token (auth). Rate limit 100/min (free).
Where to go next