Vibe Coding
Tip: Anthropic's own CI proves `claude plugin test` is not in a released build yet
Two commits in the `mods/` folder of anthropics/claude-code, dated 2026-09-12, say it plainly: the CI job "skips the test step until the installed Claude Code has plugin test" and "tells a build with plugin test by its usage line." So Anthropic detects the subcommand by grepping the CLI's own usage output rather than by version number, and gates on its absence. If you are writing a plugin test suite today, copy that detection rather than pinning a version, and expect the subcommand to arrive in a release after 2.1.270.
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