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CompanyData.com vs CongressInvests

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

APICompanyData.comNEW—CongressInvestsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CompanyData.com vs CongressInvests: common questions

Which is more reliable, CompanyData.com or CongressInvests?

On our scheduled checks, CongressInvests leads on measured uptime — CompanyData.com 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 CompanyData.com and CongressInvests need an API key?

CompanyData.com needs no key, while CongressInvests requires a free API key. If you want to start calling without signup, reach for CompanyData.com first.

Can I call CompanyData.com and CongressInvests from the browser?

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

Are CompanyData.com and CongressInvests free for commercial use?

CompanyData.com 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.