Congressional Stock Brain vs ValueRay
Same instrument, two spec sheets — measured, not claimed.
Congressional Stock Brain vs ValueRay: common questions
Which is more reliable, Congressional Stock Brain or ValueRay?
On our scheduled checks, ValueRay leads on measured uptime — Congressional Stock Brain at —% versus ValueRay 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 Congressional Stock Brain and ValueRay need an API key?
Neither needs a paid key — Congressional Stock Brain is callable with no signup, and ValueRay is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Congressional Stock Brain and ValueRay from the browser?
Yes — both Congressional Stock Brain and ValueRay 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 Congressional Stock Brain and ValueRay free for commercial use?
Congressional Stock Brain has unclear commercial terms, and ValueRay 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.