Trust signals
Pricing
FREE
Auth
API_KEY
CORS
No
Rate limit
50 requests/day free, 200 requests/month
Health
154ms
Trust score
89 (B)
Last checked Sep 4, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Strong candidate; weakest signal is CORS.
Links
- Homepageopencorporates.com
- Documentationapi.opencorporates.com/documentation/API-Reference
- Base URLapi.opencorporates.com/documentation/API-Reference
Integration checklist
- Auth is API_KEY
- No CORS — route calls through your backend.
- Rate limit: 50 requests/day free, 200 requests/month