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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 v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

Workflow scripts must be paths the tool already surfaced

You'll notice
Useful3 Signal2
Workflows

Workflow scripts only run from paths you can already read, and refusals say why.

What

A workflow script path is now refused unless it is a path the tool itself returned or a file you can already read, meaning one under the working directory or an added directory. The refusal states the rule explicitly instead of the path being used silently.

Details
  • Applies unconditionally, with no flag to relax it.
Evidence

scriptPath must be a script path this tool returned, or a file you can already read

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.251 →