# ISS Location API (Open Notify)

**Canonical:** https://apis.io/providers/iss-api/  
**Website:** http://open-notify.org/  
**APIs profiled:** 3

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.

## Kin Score — 33.1 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 33.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 55.2 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 23.7 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

## Agent readiness — 31.6 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | verified |
| 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 · Open access — onboarding: open, pricing: free, trial: no (confidence: medium).

## APIs (3)

- **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

## Agentic access (1)

- **Iss Api Agentic Access** — 4 operations

## Security (1)

- **Iss Api Domain Security** — no transport/DNS hardening detected

## Plans (1)

- **Iss Api Plans**

## Tags

Space, ISS, International Space Station, NASA, Location, Geolocation, Astronauts, Real-Time, Open-Source, Public API, Free

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