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NASA ADS API

by NASA ADS Free tier

A powerful, streamlined new Astrophysics Data System

developer

Quick Reference

Base URL https://ui.adsabs.harvard.edu Auth type OAuth 2.0 Auth header Authorization: Bearer YOUR_TOKEN Rate limit 5,000 req/day Pricing Enterprise / contact sales Free quota None Documentation https://ui.adsabs.harvard.edu/help/api/api-docs.html Endpoint status Live — HTTP 200 — endpoint is accessible801ms (checked Mar 29, 2026) Builder score D 38% builder-friendly
Pricing
28
Latency
76
Depth
18

Authentication

See documentation for auth details

Authorization: Bearer YOUR_TOKEN

Pricing

Model subscription Starting price Enterprise / contact sales Free quota None

Free with NASA ADS developer token. Astrophysics Data System for scientific literature.

Key Endpoints

MethodPathDescription
GET / See documentation for endpoint reference

Sample Request

curl 'https://ui.adsabs.harvard.edu'

Sample Response

{}

Data sourced from API Map. Always verify pricing and rate limits against the official NASA ADS documentation.