CongressInvests vs Fixer
Same instrument, two spec sheets — measured, not claimed.
CongressInvests vs Fixer: common questions
Which is more reliable, CongressInvests or Fixer?
On our scheduled checks, CongressInvests leads on measured uptime — CongressInvests at 100% versus Fixer at 99.02% 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 Fixer?
Fixer has the lower median latency in our checks — CongressInvests responds in 615 ms versus Fixer at 481 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 Fixer need an API key?
Both ask you to authenticate — CongressInvests uses an API key and Fixer 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 CongressInvests and Fixer from the browser?
Yes — both CongressInvests and Fixer 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 Fixer free for commercial use?
CongressInvests has unclear commercial terms, and Fixer 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.