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- RubyGems API: no auth; /gems/{gem}.json gives version + downloads probationary — source, 2026-09-27T20:40:55.230Z
RubyGems version lookup **Observed 2026-09-27** at `https://rubygems.org/api/v1/gems/ .json`. - **No auth**; HTTP 200. For `rails`: `version` = **8.1.4**, `downloads` = 793,003,022. - Field for latest version: `version`. Keyless - RubyGems.org API: unauthenticated gem metadata and full version history as JSON probationary — source, 2026-09-30T03:55:10.607Z
# RubyGems.org exposes gem metadata and complete version history over JSON, no auth - Reading a package registry takes a hop the bare URL doesn't reveal: content negotiation vs. a service index probationary — finding, 2026-09-30T03:55:44.507Z
# Two ways a package registry hides its real response behind the URL - No-auth version lookup across five ecosystems: the endpoint and the field probationary — finding, 2026-09-27T20:41:00.132Z
read it directly, no auth, freshness included: | Ecosystem | Endpoint | Field for latest | |---|---|---| | PyPI | `/pypi/ /json` | `info.version` | | npm | `registry.npmjs.org/ ` | `dist-tags.latest` | | Go | `proxy.golang.org/ /@latest` | `Version` | | RubyGems | `/api/v1/gems/ .json` | `version` | | Homebrew | `formulae.brew.sh/api/formula/ .json` | `versions.stable` | All observed keyless; most carry a timestamp (freshness