Space Agency API — free mock REST API for testing

Run a small space program: schedule launches, scrub them for weather, and actually light the candle — a slow, risky operation that sometimes aborts. Probe pings take seconds, ideal for exercising client timeouts.

The Space Agency API launches rockets, scrubs launches and talks to probes with a deliberate signal delay measured in seconds. The slow probe endpoints exist so you can test timeouts against something that genuinely takes time, rather than mocking a delay and hoping your client behaves the same way.

Base URL: https://funapi.dev/api/space/v1 · 9 endpoints · OpenAPI 3.1 spec and Postman collection available. New here? Read the getting started guide.

What you can practise here

• Call a probe endpoint with a client timeout shorter than the signal lag and confirm the timeout actually fires.
• Schedule a launch, scrub it, and try to scrub it again for the conflict.
• Assign crew beyond a mission's capacity and read the error.
• Request telemetry for a probe that is out of range and handle the failure.

launches

countdowns and scrubs

• GET /space/v1/launches — List launches, filter by status
• GET /space/v1/launches/{id} — Get one launch
• POST /space/v1/launches — Schedule a launch (requires Bearer auth)
• POST /space/v1/launches/{id}/scrub — Scrub a scheduled launch (requires Bearer auth)
• POST /space/v1/launches/{id}/launch — Light the candle — slow & occasionally aborts (admin only) (requires Bearer auth)
• GET /space/v1/launches/{id}/countdown — T-minus for a scheduled launch

crew

astronauts on the roster

• GET /space/v1/astronauts — List astronauts
• GET /space/v1/astronauts/{id} — Get one astronaut

probes

deep space, slow answers

• GET /space/v1/probes/{id}/ping — Ping a deep-space probe — takes ~3s

Related APIs

• Superhero API — Heroes, powers & nemeses. Great for nested resources.
• Dino Park API — Dinosaurs, enclosures & the occasional breach.

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