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 ·

Non-interactive/stream-json sessions get a stderr/warning-event billing notice instead of a dialog

Non-interactive sessions now get the billing notice as stderr text or a stream-json warning event instead of a popup

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

Non-interactive sessions now get the billing notice as stderr text or a stream-json warning event instead of a popup

What

When Claude Code runs in a mode without an interactive display, such as with --output-format stream-json --verbose (a mode that streams structured JSON events instead of a normal terminal view, with --verbose showing full turn-by-turn output), a billing notice that would normally appear as a dialog is now delivered differently. It's emitted as a warning event in the stream-json output, or written directly to standard error (stderr) otherwise, before normal output begins.

Why

This lets automated or scripted sessions that can't show a dialog still receive the same billing notice, in a form that fits the output format they're already consuming.

Read from
Names in the bundle--verbose
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 --verbose, on CLI reference. | `--forward-subagent-text` | Emit [subagent](/docs/en/sub-agents) text and thinking blocks in the output stream as `assistant` and `user` messages with `parent_tool_use_id` set, so you can reconstruct each subagent's transcript. Without t… cli-reference see the edit
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 doubtWhich gate(s) control this and what the billing notice specifically concerns are not established by the evidence.
Anthropic's documentation agreesAnthropic's documentation has since written up --verbose, on CLI reference.
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 →