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BriefTape vs CongressInvests

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

APIBriefTapeNEW—CongressInvestsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
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 CongressInvests: common questions

Which is more reliable, BriefTape or CongressInvests?

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

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

Yes — both BriefTape and CongressInvests send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are BriefTape and CongressInvests free for commercial use?

BriefTape has unclear commercial terms, and CongressInvests 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.