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Packagist vs SEO Score

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

APIPackagistHEALTHY99SEO ScoreHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms61634
P95 · ms9391704
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Packagist vs SEO Score: common questions

Which is more reliable, Packagist or SEO Score?

Both are neck-and-neck — Packagist and SEO Score each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Packagist or SEO Score?

Packagist has the lower median latency in our checks — Packagist responds in 61 ms versus SEO Score at 634 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 Packagist and SEO Score need an API key?

Packagist needs no key, while SEO Score requires a free API key. If you want to start calling without signup, reach for Packagist first.

Can I call Packagist and SEO Score from the browser?

Neither sends browser-friendly CORS headers reliably, so call Packagist and SEO Score from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Packagist and SEO Score free for commercial use?

Packagist has unclear commercial terms, and SEO Score 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.