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GitHub Contribution Chart Generator vs Registrum API

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

APIGitHub Contribution Chart GeneratorHEALTHY68Registrum APIHEALTHY96
Uptime · 30d
Uptime · 90d79.4%100%
Uptime · 30d85.0%100%
P50 · ms4374246
P95 · ms49921553
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (derived from public GitHub profile data)Unverified
Free tierFree — no keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

GitHub Contribution Chart Generator vs Registrum API: common questions

Which is more reliable, GitHub Contribution Chart Generator or Registrum API?

On our scheduled checks, Registrum API leads on measured uptime — GitHub Contribution Chart Generator at 79.4% versus Registrum API at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, GitHub Contribution Chart Generator or Registrum API?

Registrum API has the lower median latency in our checks — GitHub Contribution Chart Generator responds in 4374 ms versus Registrum API at 246 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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

GitHub Contribution Chart Generator needs no key, while Registrum API requires a free API key. If you want to start calling without signup, reach for GitHub Contribution Chart Generator first.

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

Neither sends browser-friendly CORS headers reliably, so call GitHub Contribution Chart Generator and Registrum API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are GitHub Contribution Chart Generator and Registrum API free for commercial use?

GitHub Contribution Chart Generator has unclear commercial terms, and Registrum API 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.