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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 v2.1.19 23 Jan 2026

Agent Tool Permission UI

What

New dedicated UI for when agents request tool permissions.

Details

Shows a clear "Agent tool permissions" dialog
Displays the requesting tools and their purpose
New "Allow for session" option grants permission for the entire session
Options: Allow (once), Allow for session, Deny

Evidence

QVK() at line 543289 (contains "Agent requests tool permissions", "Allow for session")

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

See this entry in the whole of v2.1.19 →