You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
HooksArea: what it touches
ImprovementsKind: in v2.1.290,
ImprovementsSection of the release
Unclear What the fallback permission check looks at is not clear.
What
A PreToolUse hook is a script you can set up to run before Claude uses a tool, and it can allow or block the action. When such a hook returns a decision but one of your deny rules overrides it, the debug log now shows the type of the deny reason instead of the deny rule's message.
The permission check in this situation also changed: if the first check returns nothing, Claude Code now falls back to a second check.
Why
The debug log tells you less than before about why a hook was overridden. The fallback check could change which hook decisions end up allowed, so it is worth watching if you rely on hooks and deny rules together.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat the fallback permission check looks at is not clear.
