# NASA APOD

**Canonical:** https://apis.io/providers/nasa-apod/  
**Website:** https://api.nasa.gov/  
**APIs profiled:** 1

NASA Astronomy Picture of the Day (APOD) REST API providing daily astronomy images and explanations curated by NASA scientists. Supports retrieval by specific date, date ranges, and random selection, with high-definition image URLs, media type detection, and optional concept tags derived from image metadata. Data is available from 1995-06-16 onward.

## Kin Score — 45.1 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 45.1).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 63.6 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

Regulatory layer — **Education & Research**: 31.5 (matched via tags).

## Agent readiness — 50.0 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | verified |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Free · Self-serve signup — onboarding: self-serve, pricing: free, trial: no (confidence: high).

## APIs (1)

- **NASA APOD APOD API** — Astronomy Picture of the Day endpoints

## Agentic access (1)

- **Nasa Apod Agentic Access** — 1 operation

## Security (2)

- **Nasa Apod Authentication** — apiKey · 1 scheme
- **Nasa Apod Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Nasa Apod Plans Pricing**

## Tags

NASA, Astronomy, Space, Image, Science, Education, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/nasa-apod/). Scores are computed from the provider's own public artifacts under a published rubric.