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ListLoco API vs RubyGems

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

APIListLoco APINEW—RubyGemsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
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

ListLoco API vs RubyGems: common questions

Which is more reliable, ListLoco API or RubyGems?

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

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

Can I call ListLoco API and RubyGems from the browser?

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

Are ListLoco API and RubyGems free for commercial use?

ListLoco API has unclear commercial terms, and RubyGems 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.