OnSched Consumer API vs Postman Echo

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms722201
P95 · ms1890815
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OnSched Consumer API vs Postman Echo: common questions

Which is more reliable, OnSched Consumer API or Postman Echo?

Both are neck-and-neck — OnSched Consumer API and Postman Echo 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 Postman Echo?

Postman Echo has the lower median latency in our checks — OnSched Consumer API responds in 722 ms versus Postman Echo at 201 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 Postman Echo need an API key?

Postman Echo needs no key, while OnSched Consumer API requires a free API key. If you want to start calling without signup, reach for Postman Echo first.

Can I call OnSched Consumer API and Postman Echo from the browser?

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

Are OnSched Consumer API and Postman Echo free for commercial use?

OnSched Consumer API has unclear commercial terms, and Postman Echo 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.