Mockaroo vs TotalShiftLeft Sandbox

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms529328
P95 · ms20391741
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — open sandbox, auth optional
Rate limitUnpublished100 req/window · 99 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Mockaroo vs TotalShiftLeft Sandbox: common questions

Which is more reliable, Mockaroo or TotalShiftLeft Sandbox?

Both are neck-and-neck — Mockaroo and TotalShiftLeft Sandbox 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, Mockaroo or TotalShiftLeft Sandbox?

TotalShiftLeft Sandbox has the lower median latency in our checks — Mockaroo responds in 529 ms versus TotalShiftLeft Sandbox at 328 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 Mockaroo and TotalShiftLeft Sandbox need an API key?

TotalShiftLeft Sandbox needs no key, while Mockaroo requires a free API key. If you want to start calling without signup, reach for TotalShiftLeft Sandbox first.

Can I call Mockaroo and TotalShiftLeft Sandbox from the browser?

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

Are Mockaroo and TotalShiftLeft Sandbox free for commercial use?

Mockaroo has unclear commercial terms, and TotalShiftLeft Sandbox 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.