SustainMetrics API
Environment · Operational · 30d uptime 100%
18,000+ GHG emission factors from DEFRA, EPA, ADEME, Ember
Trust signals
Pricing
FREEMIUM
Auth
API_KEY
CORS
Yes
Rate limit
Unknown
Health
294ms
Trust score
97 (A)
Last checked Oct 19, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Excellent production-readiness signals.
Links
- Documentationwww.sustainmetrics.net/api
- Base URLwww.sustainmetrics.net/api
Integration checklist
- Auth is API_KEY
- CORS enabled — callable directly from browsers.
- Rate limit: not documented