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BriefTape vs TaxID

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

APIBriefTapeNEW—TaxIDNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limit10000 req/window · 9381 remaining · resets 1783555200Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BriefTape vs TaxID: common questions

Which is more reliable, BriefTape or TaxID?

On our scheduled checks, TaxID leads on measured uptime — BriefTape at —% versus TaxID 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 BriefTape and TaxID need an API key?

Both ask you to authenticate — BriefTape uses an API key and TaxID 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 BriefTape and TaxID from the browser?

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

Are BriefTape and TaxID free for commercial use?

BriefTape has unclear commercial terms, and TaxID 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.