ISS Location API (Open Notify)
Open Notify is a free, open-source project by Nathan Bergey that exposes real-time NASA and ISS data as simple REST endpoints. The service provides the current latitude and longitude of the International Space Station (updated every five seconds as the ISS travels at roughly 28,000 km/h), a count and roster of all humans currently in space across all spacecraft, and historical ISS pass-time predictions for any point on Earth. All endpoints are unauthenticated, return JSON, and are free to use without registration. The ISS pass-time prediction endpoint has been retired; the location and astronaut endpoints remain live and operational.
ISS Location API (Open Notify) publishes 2 APIs on the APIs.io network: Astronauts API and ISS Location API. Tagged areas include Space, ISS, International Space Station, NASA, and Location.
The ISS Location API (Open Notify) catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
ISS Location API (Open Notify)’s developer surface includes documentation and 7 more developer resources.
Kin Score
APIs 3
Individual APIs this provider publishes, each with its own machine-readable definition.
People in Space Right Now
Returns a JSON object containing the total count of humans currently in space and an array of crew member objects, each with the person's name and the spacecraft they are aboard...
ISS Location API (Open Notify) Astronauts API
Endpoints for retrieving information about humans currently in space
ISS Location API (Open Notify) ISS Location API
Endpoints for retrieving the current position of the International Space Station
Pricing Plans 1
Published pricing tiers and plan structures.
Iss Api Plans
PLANSRate Limits 1
Documented rate limits and quota policies.
Iss Api Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Iss Api Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
context Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
JSON Schema 2
Standalone JSON Schema definitions for this provider's data models.
Astronauts Response
JSON SCHEMAISS Location Response
JSON SCHEMAExamples 2
Example request and response payloads for these APIs.
Astronauts Response
EXAMPLEIss Location Response
EXAMPLESecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
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 1
Authentication, authorization, and security posture
Commercial 1
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API