NASA NeoWs website screenshot

NASA NeoWs

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.

NASA NeoWs publishes 3 APIs on the APIs.io network: Browse API, Feed API, and Lookup API. Tagged areas include NASA, Asteroids, Near Earth Objects, Space, and Science.

The NASA NeoWs catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

NASA NeoWs’ developer surface includes authentication, documentation, pricing, signup flow, and 12 more developer resources.

48.1/100 developing ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreeSelf serve⚡ Free to try
1 APIs
NASAAsteroidsNear Earth ObjectsSpaceScienceOpen DataPlanetary Defense

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/nasa-neows: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

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.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Nasa Neows Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Nasa Neows Context

8 classes · 53 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

NASA NeoWs API Rules

6 rules · 5 warnings 1 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

AsteroidBrowseResponse

3 properties

JSON SCHEMA

AsteroidFeedResponse

3 properties

JSON SCHEMA

NearEarthObject

12 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Browse Asteroids

3 fields

EXAMPLE

Get Asteroid Feed

3 fields

EXAMPLE

Lookup Asteroid

3 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Nasa Neows Authentication

apiKey · 1 scheme

SECURITY

Nasa Neows Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Nasa Neows Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: nasa-neows
name: NASA NeoWs
description: '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.

  '
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nasa-neows.png
url: https://raw.githubusercontent.com/api-evangelist/nasa-neows/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
type: Index
tags:
- NASA
- Asteroids
- Near Earth Objects
- Space
- Science
- Open Data
- Planetary Defense
apis:
- aid: nasa-neows:nasa-neows-browse-api
  name: NASA NeoWs Browse API
  description: The Browse API from NASA NeoWs — 1 operation(s) for browse.
  humanURL: https://api.nasa.gov/
  baseURL: https://api.nasa.gov/neo/rest/v1
  tags:
  - Browse
  properties:
  - type: OpenAPI
    url: openapi/nasa-neows-browse-api-openapi.yml
  - type: Documentation
    url: https://api.nasa.gov/
- aid: nasa-neows:nasa-neows-feed-api
  name: NASA NeoWs Feed API
  description: The Feed API from NASA NeoWs — 1 operation(s) for feed.
  humanURL: https://api.nasa.gov/
  baseURL: https://api.nasa.gov/neo/rest/v1
  tags:
  - Feed
  properties:
  - type: OpenAPI
    url: openapi/nasa-neows-feed-api-openapi.yml
  - type: Documentation
    url: https://api.nasa.gov/
- aid: nasa-neows:nasa-neows-lookup-api
  name: NASA NeoWs Lookup API
  description: The Lookup API from NASA NeoWs — 1 operation(s) for lookup.
  humanURL: https://api.nasa.gov/
  baseURL: https://api.nasa.gov/neo/rest/v1
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/nasa-neows-lookup-api-openapi.yml
  - type: Documentation
    url: https://api.nasa.gov/
common:
- type: IssueTracker
  url: https://github.com/nasa/api-docs/issues
- type: ContributionGuide
  url: https://github.com/nasa/api-docs/blob/gh-pages/CONTRIBUTING.md
- type: AgenticAccess
  url: agentic-access/nasa-neows-agentic-access.yml
- type: DomainSecurity
  url: security/nasa-neows-domain-security.yml
- type: Authentication
  url: authentication/nasa-neows-authentication.yml
- type: Website
  url: https://api.nasa.gov/
- type: Documentation
  url: https://api.nasa.gov/
- type: GitHubOrg
  url: https://github.com/nasa
- type: GitHubRepository
  url: https://github.com/nasa/api-docs
- type: Pricing
  url: https://api.nasa.gov/
- type: StatusPage
  url: https://status.api.nasa.gov/
- type: TermsOfService
  url: https://www.usa.gov/developer-apis
- type: Signup
  url: https://api.nasa.gov/#signUp
- type: Plans
  url: plans/nasa-neows-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nasa-neows-rate-limits.yml
- type: FinOps
  url: finops/nasa-neows-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: nasa
x-relationship: product

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