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FinSignals API vs LectServe

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

APIFinSignals APINEW—LectServeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FinSignals API vs LectServe: common questions

Which is more reliable, FinSignals API or LectServe?

On our scheduled checks, LectServe leads on measured uptime — FinSignals API at —% versus LectServe 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 FinSignals API and LectServe need an API key?

Neither needs a paid key — FinSignals API is callable with no signup, and LectServe is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call FinSignals API and LectServe from the browser?

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

Are FinSignals API and LectServe free for commercial use?

FinSignals API has unclear commercial terms, and LectServe 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.