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CongressInvests vs Exchangerate.dev

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

APICongressInvestsHEALTHY92Exchangerate.devDYING63
Uptime · 30d
Uptime · 90d100%71.6%
Uptime · 30d100%51.7%
P50 · ms615336
P95 · ms1338807
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublished12 req/window · 11 remaining · resets 1783515720
In directory since2026-07-052026-07-05
operationalpartialdownno data

CongressInvests vs Exchangerate.dev: common questions

Which is more reliable, CongressInvests or Exchangerate.dev?

On our scheduled checks, CongressInvests leads on measured uptime — CongressInvests at 100% versus Exchangerate.dev at 71.6% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, CongressInvests or Exchangerate.dev?

Exchangerate.dev has the lower median latency in our checks — CongressInvests responds in 615 ms versus Exchangerate.dev at 336 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 CongressInvests and Exchangerate.dev need an API key?

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

Can I call CongressInvests and Exchangerate.dev from the browser?

Yes — both CongressInvests and Exchangerate.dev 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 CongressInvests and Exchangerate.dev free for commercial use?

CongressInvests has unclear commercial terms, and Exchangerate.dev 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.