Delta CC-04 — Claude Code dossier

DELTA CC-04 / Claude Code

PreToolUse exit code 2 does not block Agent/Task tool calls — 100% failure across 19 attempted blocks (#26923); fix asserted in a later release, re-verification pending

openopened ≤2026-02

Description

UPDATE 2026-06-28: #26923 is now CLOSED and the docs list PreToolUse as a blocking event, but the resolution method is unconfirmed — this is a re-verification trigger (DC-2), not a closure. One TD re-execution test (exit-2 against an Agent/Task call) is needed to close or reopen.

Closes when

A PreToolUse hook exiting 2 blocks an Agent tool call, with the block message replacing the tool output, re-verified on a current release

Evidence

[1]Re-verified open 2026-06-28 against v2.1.195