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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.221 ·

New telemetry for post-install plugin activation

Claude now records whether a freshly installed plugin actually activated, and why it didn't.

Under the hood Internal Changes
JSON All of v2.1.221
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
PluginsArea: what it touches
Internal ChangesKind: in v2.1.221,
Internal ChangesSection of the release
What

The in-session activation helper reports whether it managed to bring the plugin up and why not when it did not.

Details
  • Emits tengu_plugin_install_auto_activate with activated, true when nothing blocked it, and a reason field on failure.
  • Separately records outcomes under the name "plugin_install_auto_activate" with reasons "cache_impact", "refresh_failed" and "plugin_load_error".
  • Fires wherever the install flow runs.
Evidence

tengu_plugin_install_auto_activate

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.221 →

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