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OnSched Consumer API vs scrapestack

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

APIOnSched Consumer APIHEALTHY88scrapestackHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms722346
P95 · ms1890844
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OnSched Consumer API vs scrapestack: common questions

Which is more reliable, OnSched Consumer API or scrapestack?

Both are neck-and-neck — OnSched Consumer API and scrapestack 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, OnSched Consumer API or scrapestack?

scrapestack has the lower median latency in our checks — OnSched Consumer API responds in 722 ms versus scrapestack at 346 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 OnSched Consumer API and scrapestack need an API key?

Both ask you to authenticate — OnSched Consumer API uses an API key and scrapestack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call OnSched Consumer API and scrapestack from the browser?

Only OnSched Consumer API is browser-friendly — it returns CORS headers over HTTPS. scrapestack needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are OnSched Consumer API and scrapestack free for commercial use?

OnSched Consumer API has unclear commercial terms, and scrapestack 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.