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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.

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Claude Code v2.1.242

Workflow tasks can relay the triggering request in a labelled frame

You'll notice
Useful3 Signal3
Workflows not in their notes

Workflow runs now label whether a person or a schedule triggered them, and quote the request.

CLAUDE_CODE_WORKFLOW_PROMPT_PROVENANCE
What

A workflow run now classifies what set it off. A scheduled or external trigger gets an "automated trigger" banner telling the model it cannot claim user approval, while a run a person decided relays that person's request verbatim and indented, with optional preceding assistant context, and control characters and backticks stripped.

Details
  • CLAUDE_CODE_WORKFLOW_PROMPT_PROVENANCE forces the behaviour; otherwise it depends on the tengu_bubbly_harbor check, which is treated as off if the check fails.
Evidence

[Workflow harness \u2014 automated trigger]

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

See this entry in the whole of v2.1.242 →