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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 v2.1.91 Home All releases olderv2.1.90 v2.1.92newer
Claude Code v2.1.91

Edit After Write Without Read [Gradual Rollout]

What

Files written during the current session can be edited without a prior Read call — the Edit tool recognizes that the session already knows the file's contents.

Status

Feature-flagged via tengu_editafterwrite_qpl (default: false)

Details
  • Edit tool description appends: "Files you Wrote this session can be Edited without a prior Read."
  • Reduces unnecessary round-trips when writing then immediately editing a file
Evidence

Edit after write (gated by tengu_editafterwrite_qpl, search for "Files you Wrote this session")

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

See this entry in the whole of v2.1.91 →