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Datasette vs GitHub Contribution Chart Generator

Same instrument, two spec sheets — measured, not claimed.

APIDatasetteNEW—GitHub Contribution Chart GeneratorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (derived from public GitHub profile data)
Free tierFree — limits not publishedFree — no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Datasette vs GitHub Contribution Chart Generator: common questions

Which is more reliable, Datasette or GitHub Contribution Chart Generator?

On our scheduled checks, GitHub Contribution Chart Generator leads on measured uptime — Datasette at —% versus GitHub Contribution Chart Generator at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Datasette and GitHub Contribution Chart Generator need an API key?

Neither needs a paid key — Datasette is callable with no signup, and GitHub Contribution Chart Generator is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Datasette and GitHub Contribution Chart Generator from the browser?

Only Datasette is browser-friendly — it returns CORS headers over HTTPS. GitHub Contribution Chart Generator needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Datasette and GitHub Contribution Chart Generator free for commercial use?

Datasette has unclear commercial terms, and GitHub Contribution Chart Generator has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.