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 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
52.3/100 developing ▼ -5.2 Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreeSelf serve⚡ Free to try
3 APIs
NASAAsteroidsNear Earth ObjectsSpaceScienceOpen DataPlanetary Defense

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 52.3/100 · developing
Contract Quality 17.4 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 6.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. 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. Want it done for you? Prioritized profiling — $2,500 →

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.

Pricing Plans 1

Published pricing tiers and plan structures.

Nasa Neows Plans Pricing

3 plans

PLANS

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.

Nasa Neows Finops

FINOPS

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

Signup
Signup

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg
 GitHubRepository
GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 Plans
Plans
 FinOps
FinOps

Company 1

The organization behind the API

Website
Website

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.

  '
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  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: '0.19'
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: 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