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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 v2.1.220

Prompt text for /code-review, /simplify, skill-saving and credential paths is byte-identical

Under the hood
Useful1 Signal0
Elsewhere

Code review, simplify and skill-saving instructions are unchanged despite looking rewritten in the bundle.

/code-review/simplify
What

A large group of apparently new and removed code is pure bundler renaming, with prompt wording unchanged from 2.1.219.

Details
  • Covers the code-review phase prompts including "## Phase 2 \u2014 Verify (1-vote, 3-state)", "## Phase 3 \u2014 Sweep for gaps" and the Artifact publishing block.
  • Also covers the /simplify 4-agent and single-pass prompts, the "# Saving skills" system prompt variants, the background-session shipping policy text, the workflow status strings and the credential file paths.
  • Only the surrounding minified identifiers and the interpolated tool and skill symbols differ. No user-visible behaviour change.
Evidence

## Phase 3 \u2014 Sweep for gaps

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 v2.1.220 →