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 v2.1.108 Home All releases olderv2.1.107 v2.1.109newer
Claude Code v2.1.108

Command vs Skill Disambiguation

What

When the model tries to invoke a built-in CLI command as a skill, it now receives a clear error explaining the distinction.

Details
  • Error message: "[name] is a [type] command, not a skill. Ask the user to run /[name] themselves — it cannot be invoked via the [tool] tool."
  • Prevents confusion between built-in slash commands and skill invocations
Evidence

Disambiguation error message (search for "command, not a skill")

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

See this entry in the whole of v2.1.108 →