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 v2.1.277 ·

New terminal-title-suppression gate for SDK-CLI entrypoint

Terminal title can now be suppressed for the SDK-CLI entrypoint, behind a new flag

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaTerminal Renderingwhat it touches
KindIn Developmentin v2.1.277,
Nothing to try yet No documentation found

Terminal title can now be suppressed for the SDK-CLI entrypoint, behind a new flag

What

Claude Code has logic that decides whether to hide the change to your terminal window's title. It now also suppresses the title when Claude Code is launched with CLAUDE_CODE_ENTRYPOINT set to sdk-cli, but only if neither CLAUDE_AGENT_SDK_VERSION nor CLAUDE_CODE_REMOTE_SESSION_ID is set. This is controlled by a new gate, tengu_quizzical_thimble.

Why

This keeps the terminal title from changing unexpectedly when Claude Code is invoked through this specific SDK-CLI path without the environment markers that would normally indicate an SDK or remote session.

Read from
Names in the bundleCLAUDE_CODE_ENTRYPOINTtengu_quizzical_thimble
Feature flag
tengu_quizzical_thimble 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 v2.1.277: 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 v2.1.277. It isn't a statement about your account. What a flag value here can and cannot tell you

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: tengu_quizzical_thimble

See this entry in the whole of v2.1.277 →