# NASA NeoWs

**Canonical:** https://apis.io/providers/nasa-neows/  
**Website:** https://api.nasa.gov/  
**APIs profiled:** 3

NASA Near Earth Object Web Service (NeoWs) REST API for searching and browsing near Earth asteroid information. Users can search for asteroids based on their closest approach date to Earth, look up a specific asteroid by NASA JPL small body (SPK-ID), and browse the overall dataset. Data originates from the NASA JPL Asteroid team and is maintained by the SpaceRocks Team.

## Kin Score — 49.0 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 49.0).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 65.0 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 44.7 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 63.2 |
| Access Clarity | 63.2 |

Regulatory layer — **Government & Public Sector**: 31.5 (matched via tags).

## Agent readiness — 34.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| 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 (3)

- **NASA NeoWs Browse API** — The Browse API from NASA NeoWs — 1 operation(s) for browse.
- **NASA NeoWs Feed API** — The Feed API from NASA NeoWs — 1 operation(s) for feed.
- **NASA NeoWs Lookup API** — The Lookup API from NASA NeoWs — 1 operation(s) for lookup.

## Agentic access (1)

- **Nasa Neows Agentic Access** — 3 operations

## Security (2)

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

## Plans (1)

- **Nasa Neows Plans Pricing**

## Tags

NASA, Asteroids, Near Earth Objects, Space, Science, Open Data, Planetary Defense

---

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