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 v2.1.238 Home All releases olderv2.1.237 v2.1.239newer
Claude Code v2.1.238

Read-only skill loads tell the model to hand execution to a worker

You'll notice
Useful2 Signal4
Skills

Read-only skill loads now return a note saying nothing ran and a worker should execute it.

What

When a skill is loaded read-only, the tool result is now an explicit note that the instructions were loaded, nothing ran, and execution should be delegated to a worker, instead of the usual result payload.

Details
  • Emitted from the read-only branch of the tool-result formatter, driven by the readOnly flag on the load result.
Evidence

Nothing was executed; delegate execution to a worker.

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

See this entry in the whole of v2.1.238 →