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BuyWhere vs The Guardian

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

APIBuyWhereNEW—The GuardianNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree developer key — registration required
Rate limitUnpublished5000 calls/day (developer tier)
In directory since2026-07-052026-07-05
operationalpartialdownno data

BuyWhere vs The Guardian: common questions

Which is more reliable, BuyWhere or The Guardian?

On our scheduled checks, The Guardian leads on measured uptime — BuyWhere at —% versus The Guardian 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 BuyWhere and The Guardian need an API key?

Both ask you to authenticate — BuyWhere uses an API key and The Guardian 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 BuyWhere and The Guardian from the browser?

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

Are BuyWhere and The Guardian free for commercial use?

BuyWhere has unclear commercial terms, and The Guardian 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.