NASA
NASA (National Aeronautics and Space Administration) provides a suite of public APIs at api.nasa.gov offering access to space, Earth science, and aeronautics data. Key APIs include Astronomy Picture of the Day (APOD), Mars Rover Photos, Near Earth Object Web Service (NeoWs), DONKI space weather events, EPIC Earth imagery, and the NASA Image and Video Library. All APIs are free and accessible with an API key.
NASA publishes 37 API contracts indexed on the APIs.io network, including Asset API, Captions API, DONKI API, and 34 more. Tagged areas include Government, Science, Space, Geospatial, and Government Data.
The NASA catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
NASA’s developer surface includes authentication, sandbox, developer portal, documentation, engineering blog, and 32 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Space and Satellite (operators, earth observation, ground segment) | standard | 40.7 | 1 | 1 |
| Open Data Portals (CKAN / DCAT) | standard | 40.7 | 1 | 1 |
| US Federal API Programs (api.data.gov, Login.gov, GSA MAS, FedRAMP) | standard | 40.7 | 1 | 1 |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 1
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 37
Individual APIs this provider publishes, each with its own machine-readable definition.
NASA Asset API
The Asset API from NASA — 1 operation(s) for asset.
NASA Captions API
The Captions API from NASA — 1 operation(s) for captions.
NASA DONKI API
The DONKI API from NASA — 8 operation(s) for donki.
NASA EPIC API
The EPIC API from NASA — 5 operation(s) for epic.
NASA Mars Photos API
The Mars Photos API from NASA — 3 operation(s) for mars photos.
NASA Metadata API
The Metadata API from NASA — 1 operation(s) for metadata.
NASA Neo API
The Neo API from NASA — 3 operation(s) for neo.
NASA Planetary API
The Planetary API from NASA — 1 operation(s) for planetary.
NASA Search API
The Search API from NASA — 1 operation(s) for search.
NASA Technology Transfer API
The NASA Technology Transfer API provides programmatic access to the NASA patent portfolio, software catalog, and spinoff technologies developed through the Artemis program and ...
NASA Album API
The Album API from NASA — 1 operation(s) for album.
NASA CAD API
The CAD API from NASA — 1 operation(s) for cad.
NASA Categories API
The Categories API from NASA — 2 operation(s) for categories.
NASA Earth API
The Earth API from NASA — 2 operation(s) for earth.
NASA Enhanced API
The Enhanced API from NASA — 3 operation(s) for enhanced.
NASA Events API
The Events API from NASA — 1 operation(s) for events.
NASA Fireball API
The Fireball API from NASA — 1 operation(s) for fireball.
NASA Layers API
The Layers API from NASA — 1 operation(s) for layers.
NASA Locations API
The Locations API from NASA — 1 operation(s) for locations.
NASA Magnitudes API
The Magnitudes API from NASA — 1 operation(s) for magnitudes.
NASA Natural API
The Natural API from NASA — 4 operation(s) for natural.
NASA NHATS API
The NHATS API from NASA — 1 operation(s) for nhats.
NASA Observatories API
The Observatories API from NASA — 1 operation(s) for observatories.
NASA Patents API
The Patents API from NASA — 2 operation(s) for patents.
NASA Projects API
The Projects API from NASA — 2 operation(s) for projects.
NASA Rovers API
The Rovers API from NASA — 1 operation(s) for rovers.
NASA SBDB API
The SBDB API from NASA — 2 operation(s) for sbdb.
NASA Scout API
The Scout API from NASA — 1 operation(s) for scout.
NASA Sentry API
The Sentry API from NASA — 1 operation(s) for sentry.
NASA Software API
The Software API from NASA — 1 operation(s) for software.
NASA Sources API
The Sources API from NASA — 1 operation(s) for sources.
NASA Spinoff API
The Spinoff API from NASA — 1 operation(s) for spinoff.
NASA Stations API
The Stations API from NASA — 1 operation(s) for stations.
NASA Tap API
The Tap API from NASA — 2 operation(s) for tap.
NASA TLE API
The TLE API from NASA — 2 operation(s) for tle.
NASA Weather API
The Weather API from NASA — 1 operation(s) for weather.
NASA WMTS API
The WMTS API from NASA — 1 operation(s) for wmts.
Scroll for all 37
Open Collections 15
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
NASA Astronomy Picture of the Day (APOD) API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset Captions API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset DONKI API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset EPIC API
OPEN COLLECTIONNASA EPIC (Earth Polychromatic Imaging Camera) API
OPEN COLLECTIONNASA Mars Rover Photos API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset Metadata API
OPEN COLLECTIONNASA Image and Video Library API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset Neo API
OPEN COLLECTIONNASA NeoWs (Near Earth Object Web Service) API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset Planetary API
OPEN COLLECTIONNASA Astronomy Picture of the Day (APOD) Asset Search API
OPEN COLLECTIONScroll for all 15
Arazzo Workflows 7
Multi-step API workflows described with the Arazzo specification.
NASA APOD Daily Digest
Pull the Astronomy Picture of the Day and enrich it with related assets from the NASA Image and Video Library.
ARAZZONASA DONKI Notification Triage
Poll DONKI space weather notifications and branch to the matching event endpoint for the detail the alert omits.
ARAZZONASA DONKI Space Weather Event Chain
Walk one space weather window end to end — solar flare, coronal mass ejection, CME analysis, interplanetary shock, geomagnetic storm.
ARAZZONASA EPIC Earth Imagery Retrieval
List the dates EPIC actually has imagery for, then pull both natural and enhanced color metadata for one of them.
ARAZZONASA Mars Rover Photo Harvest
Read a rover's mission manifest to find a sol that actually has photos, then harvest that sol's images.
ARAZZONASA Media Asset Retrieval
Search the NASA Image and Video Library, then resolve the downloadable files, metadata, and captions for a match.
ARAZZONASA Near Earth Object Close Approach Analysis
Page the asteroid catalog, look up a specific near-Earth object, and pull every other object approaching on the same date.
ARAZZOScroll for all 7
NASA API pricing
Not yet checked against NASA's own pricing page. Compiled by API Evangelist on 2026-05-05 from api.nasa.gov/; confirm before you rely on a figure. A free plan or tier is listed.
| Plan | Price |
|---|---|
| DEMO_KEY freemium | Free |
| Signed-up API Key freemium | Free |
| Custom Higher Limits enterprise | — |
Plan details, limits and sources →
Rate limits
- Signed-up API key (default): 1000 requests per hour
- DEMO_KEY hourly: 30 requests per hour
- DEMO_KEY daily: 50 requests per day
Compiled by API Evangelist, not yet checked against NASA's documentation. Rate-limit details →
Pricing Plans 1
Published pricing tiers and plan structures.
Nasa Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Nasa Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
NASA
SLAFinOps 1
Cost, billing, and metering signals for API financial operations.
Nasa Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Nasa Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
NASA — jsonschema rules
SPECTRALOpenAPI Overlays 6
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Nasa Apod Overlay
DERIVEDNasa Donki Overlay
DERIVEDNasa Epic Overlay
DERIVEDNasa Mars Rover Photos Overlay
DERIVEDNasa Neo Overlay
DERIVEDJSON Schema 11
Standalone JSON Schema definitions for this provider's data models.
APOD Image
JSON SCHEMAApodEntry
JSON SCHEMARover Camera
JSON SCHEMAClose Approach
JSON SCHEMACoronal Mass Ejection
JSON SCHEMAEPIC Image
JSON SCHEMAGeomagnetic Storm
JSON SCHEMANear Earth Object
JSON SCHEMAMars Rover Photo
JSON SCHEMAMars Rover
JSON SCHEMASolar Flare
JSON SCHEMAScroll for all 11
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 12
Pagination, idempotency, versioning, errors, and events
Scroll for all 12
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 7
Properties that don't map to a standard resource type
Scroll for all 7
Source (apis.yml)
NASA API — frequently asked questions
Does NASA have an API?
Yes. APIs.io lists 37 APIs from NASA, including NASA Asset API, NASA Captions API and NASA DONKI API, and 34 more.
Is there an OpenAPI specification for the NASA API?
Yes. APIs.io indexes 36 OpenAPI specifications for NASA, each linked for download from this page.
How do I authenticate with the NASA API?
NASA uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Nasa Authentication.
How much does the NASA API cost?
APIs.io lists 3 pricing plans for NASA, with each plan's price, limits and inclusions under Pricing on this page.
Is the NASA API ready for AI agents?
NASA has a Kin Score of 34.7 out of 100 (thin) and an Agent Readiness score of 19.6 (agent-aware), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.