NASA ADS API

Science & Math · Operational · 30d uptime 100%

NASA Astrophysics Data System

Trust signals

Pricing

FREEMIUM

Auth

OAUTH2

CORS

Yes

Rate limit

Rate limits apply per API key

Health

331ms

Trust score

91 (A)

Last checked Oct 19, 2026 · uptime 24h 100% / 7d 100% / 30d 100%

Excellent production-readiness signals.

Links

Homepageui.adsabs.harvard.edu
Documentationui.adsabs.harvard.edu/help/api/api-docs.html
Base URLui.adsabs.harvard.edu/help/api/api-docs.html

Integration checklist

Auth is OAUTH2
CORS enabled — callable directly from browsers.
Rate limit: Rate limits apply per API key

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