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 v2.1.278 ·

Declining the billing notice cancels the in-flight tool call

Pressing Escape on the new billing notice cancels the tool call it interrupted

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaAuto Modewhat it touches
KindIn Developmentin v2.1.278,
Nothing to try yet

Pressing Escape on the new billing notice cancels the tool call it interrupted

What

When the new classifier billing notice dialog is showing and the user presses Escape to decline, the tool call that triggered the notice is denied outright, with the reason recorded as "Cancelled at the classifier billing notice."

Why

This gives users a real way to stop a tool call rather than just dismissing a warning: declining the notice means the action doesn't go through.

Read from
Names in the bundleEscape
Feature flag
tengu_velvet_heron Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.278: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.278. It isn't a statement about your account. What a flag value here can and cannot tell you

Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up Escape, on Customize keyboard shortcuts. | `chat:cancel` | Escape | Cancel current input | keybindings see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up Escape, on Customize keyboard shortcuts.
The name it cites is new in this buildNew in this build: tengu_velvet_heron

See this entry in the whole of v2.1.278 →