Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.267 ·

New tengu_fizzy_bonbon gate affects tool-permission resolution

A new tengu_fizzy_bonbon gate, off by default, branches how tool permission is resolved in fast-mode and auto-mode paths

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaModelswhat it touches
KindIn Developmentin v2.1.267,
Group of 2 Nothing to try yet No documentation found

A new tengu_fizzy_bonbon gate, off by default, branches how tool permission is resolved in fast-mode and auto-mode paths

What

  • A new gate, tengu_fizzy_bonbon, defaulting to off, was added to the tool-permission resolution flow.
  • In the fast-mode permission path, it switches between alternate ways of resolving tool permission.
  • In the auto-mode streaming path, it picks between two ways of establishing tool permission context/consent: a more direct path, or the existing getToolPermissionContext() await path.

Why This is an internal gated change to how Claude Code resolves whether a tool call is permitted; while off, behavior is unchanged, but it lays groundwork for a different permission-resolution approach.

Read from
Names in the bundletengu_fizzy_bonbon
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 doubtNothing has been read about the `tengu_fizzy_bonbon` gate, so what the alternate permission-resolution logic actually changes is unclear.
The name it cites is new in this buildNew in this build: tengu_fizzy_bonbon

See this entry in the whole of v2.1.267 →