- Free allowance
- Free for everyone with no API key: articles, blogs and ISS reports from many spaceflight news sites, up to 500 results a request, 5 requests a second for anonymous callers.
- Verdict
- ★ qualifiesusable as stated; the read path was probed
- Cost
- free tier
- Identity
- anonymousno card, no phone
- Binding limit
- request-rate5 requests a second for anonymous callers
- Evidence
- documented8 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-03checked 2026-11-02 (live); stale on 2026-12-03
| Free tier | Free for everyone with no API key: articles, blogs and ISS reports from many spaceflight news sites, up to 500 results a request, 5 requests a second for anonymous callers. unit requests; metered on request-count; No daily or monthly request quota is stated; the only published limit is the anonymous throttle of 5 requests a second. The importer checks for new data every 10 minutes. The project asks commercial users to consider supporting it through Patreon or a donation. |
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| Price | none stated |
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| Limits | - request-rate (binding) 5 requests a second for anonymous callers source
- retention-clamped a limit above 500 is clamped to 500 results a request
- per-object-cap offset at most 10,000; filter on published_at_lt to go further back source
|
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| Binding | request-rate 5 requests a second is the only published limit; 36741 articles at 500 results a request is 74 requests (36741 / 500, rounded up). |
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| Identity | anonymous No account and no key: a plain GET answered HTTP 200 with articles. |
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| Egress | not applicable |
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| Per-object cap | 500 results a request: a limit above 500 is answered with 500 results and a next link at limit=500 |
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| Retention | the full archive is served: the article list counted 36741 articles when read |
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| Interface | rest, graphql REST over HTTPS at api.spaceflightnewsapi.net/v4 (articles, blogs, reports, info) with an OpenAPI 3 schema at /v4/schema/, and a GraphQL endpoint at /v4/graphql/ |
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| Tooling | any HTTP client or GraphQL client; the OpenAPI schema generates a client |
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| Composes with | Article, blog and report metadata with a summary, the source URL and Launch Library 2 launch and event ids; the full article is fetched from the source URL by a crawler. |
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| Reliability | Responses carry cache-control max-age 600; the throttle for anonymous callers is stated in the project changelog and was not exercised by a burst. |
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| Notes | Storage: no storage or caching limit is stated in the documentation or the FAQ. Bulk path: page the article list at limit=500 with offset up to 10,000, then filter on published_at_lt with the published_at of the last result; 74 requests cover 36741 articles. |
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| Evidence note | documented The no-key access and the page-size clamp were read from live answers; the 5 requests a second throttle is read from the project changelog and was not exercised, so the record stays documented. |
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| Parsed numbers | - has-free-tier 1
- request-rate 5 requests
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