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Bureau of Labor Statistics Public Data API vs Callook.info

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

APIBureau of Labor Statistics Public Data APIHEALTHY91Callook.infoHEALTHY94
Uptime · 30d
Uptime · 90d96.1%100%
Uptime · 30d93.3%100%
P50 · ms516437
P95 · ms13541156
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (data from public FCC ULS records)
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Bureau of Labor Statistics Public Data API vs Callook.info: common questions

Which is more reliable, Bureau of Labor Statistics Public Data API or Callook.info?

On our scheduled checks, Callook.info leads on measured uptime — Bureau of Labor Statistics Public Data API at 96.1% versus Callook.info at 100% 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, Bureau of Labor Statistics Public Data API or Callook.info?

Callook.info has the lower median latency in our checks — Bureau of Labor Statistics Public Data API responds in 516 ms versus Callook.info at 437 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 Bureau of Labor Statistics Public Data API and Callook.info need an API key?

Neither needs a paid key — Bureau of Labor Statistics Public Data API is callable with no signup, and Callook.info is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Bureau of Labor Statistics Public Data API and Callook.info from the browser?

Only Callook.info is browser-friendly — it returns CORS headers over HTTPS. Bureau of Labor Statistics Public Data API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Bureau of Labor Statistics Public Data API and Callook.info free for commercial use?

Bureau of Labor Statistics Public Data API has unclear commercial terms, and Callook.info 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.