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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 v2.1.219

Advisor tool result payload is now a discriminated union that can be encrypted

You'll notice
Useful2 Signal0
Elsewhere

Advisor tool results can come back encrypted with no text field, so reading .text may find nothing.

What

The advisor-tool docs warn that advisor_tool_result.content differs by advisor model, so code that reads .text unconditionally can silently get nothing.

Details
  • Plaintext advisors return advisor_result with text and stop_reason.
  • The newest advisors return advisor_redacted_result with encrypted_content and no text.
  • The executor-to-advisor compatibility table is expanded with the new Opus, Fable and Mythos IDs.
Evidence

advisor_redacted_result

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 →