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Plaid API vs Signaliz

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

APIPlaid APINEW—SignalizNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Plaid API vs Signaliz: common questions

Which is more reliable, Plaid API or Signaliz?

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

Both ask you to authenticate — Plaid API uses an API key and Signaliz 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 Plaid API and Signaliz from the browser?

Yes — both Plaid API and Signaliz 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 Plaid API and Signaliz free for commercial use?

Plaid API has unclear commercial terms, and Signaliz 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.