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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 v2.1.105 13 Apr 2026

Ultrareview Billing Overhaul

Ultrareview billing now uses a server-driven preflight check that returns proceed, blocked, or confirm states, replacing the old client-side quota check. The blocked state shows an actionable message; the confirm state shows a dialog with billing details (e.g., "This review bills as usage (~$10)").

Evidence

Preflight endpoint (search for "/v1/ultrareview/preflight")

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

See this entry in the whole of v2.1.105 →