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Istanbul (İBB) Open Data vs LocalGov.jp

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

APIIstanbul (İBB) Open DataNEW—LocalGov.jpNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverified (varies per dataset)CC BY 4.0 (attribution: "via LocalGov.jp")
Free tierFree — limits not publishedFree — all endpoints currently free (per llms.txt)
Rate limitUnpublished30 req/window · 29 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

Istanbul (İBB) Open Data vs LocalGov.jp: common questions

Which is more reliable, Istanbul (İBB) Open Data or LocalGov.jp?

On our scheduled checks, LocalGov.jp leads on measured uptime — Istanbul (İBB) Open Data at —% versus LocalGov.jp 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 Istanbul (İBB) Open Data and LocalGov.jp need an API key?

Neither needs a paid key — Istanbul (İBB) Open Data is callable with no signup, and LocalGov.jp is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Istanbul (İBB) Open Data and LocalGov.jp from the browser?

Only LocalGov.jp is browser-friendly — it returns CORS headers over HTTPS. Istanbul (İBB) Open Data needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Istanbul (İBB) Open Data and LocalGov.jp free for commercial use?

Istanbul (İBB) Open Data has unclear commercial terms, and LocalGov.jp allows commercial use on its free tier. 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.