# NASA ADS API

**Provider:** NASA ADS
**Category:** developer
**Base URL:** `https://ui.adsabs.harvard.edu`
**Auth:** oauth2 — `Authorization: Bearer YOUR_TOKEN`
**Rate Limit:** 5,000 req/day
**Free Tier:** Yes — available
**Pricing:** Enterprise / contact sales (subscription)
**Docs:** https://ui.adsabs.harvard.edu/help/api/api-docs.html

## Description

A powerful, streamlined new Astrophysics Data System

## Endpoints

| Method | Endpoint | Description |
|--------|----------|-------------|
| GET | `https://ui.adsabs.harvard.edu/` | See documentation for endpoint reference |

## Authentication

See documentation for auth details

```
Authorization: Bearer YOUR_TOKEN
```

## Sample Request

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

## Sample Response

```json
{}
```

## Pricing Details

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

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*Source: [API Map](https://apimap.dev/apis/nasa-ads/) — CC BY 4.0*