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Fed Treasury vs Tomba email finder

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

APIFed TreasuryNEW—Tomba email finderNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseOpen U.S. Government data (public domain)Unverified
Free tierFree — no API keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Fed Treasury vs Tomba email finder: common questions

Which is more reliable, Fed Treasury or Tomba email finder?

On our scheduled checks, Tomba email finder leads on measured uptime — Fed Treasury at —% versus Tomba email finder at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Fed Treasury and Tomba email finder need an API key?

Fed Treasury needs no key, while Tomba email finder requires a free API key. If you want to start calling without signup, reach for Fed Treasury first.

Can I call Fed Treasury and Tomba email finder from the browser?

Only Tomba email finder is browser-friendly — it returns CORS headers over HTTPS. Fed Treasury needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Fed Treasury and Tomba email finder free for commercial use?

Fed Treasury allows commercial use on its free tier, and Tomba email finder 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.