Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.219 Home All releases olderv2.1.218 v2.1.220newer
Claude Code v2.1.219

/plugin gains a stats subcommand

Not switched on
Useful3 Signal4
Plugins Notable not in their notes

A stats subcommand for plugins would show skill usage and context costs, but it stays hidden unless a flag is on.

/plugin stats is registered behind tengu_lantern_prism, which falls back to false, or the CLAUDE_CODE_LANTERN_PRISM environment variable.

Feature flag
tengu_lantern_prism Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.219: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.219. It isn't a statement about your account. What a flag value here can and cannot tell you

/plugin statsCLAUDE_CODE_LANTERN_PRISM
What

The /plugin command completion list adds a stats subcommand described as showing skill usage and context costs, listed after list, enable, disable, install, uninstall and marketplace.

Details
  • gated on the tengu_lantern_prism flag, which falls back to false, or the CLAUDE_CODE_LANTERN_PRISM environment variable
  • with the gate off the subcommand does not appear in completions
Evidence

Show skill usage and context costs

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

See this entry in the whole of v2.1.219 →