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 v2.1.275 ·

Auto-naming for unnamed background subagents behind tengu_zinc_harbor

Unnamed background subagents can now get an automatic display name

TierNothing to try yethow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaSubagentswhat it touches
KindIn Developmentin v2.1.275,
Nothing to try yet

Unnamed background subagents can now get an automatic display name

What

When you launch a subagent (a helper agent Claude Code spawns to work on a task) to run in the background without giving it an explicit name, Claude Code can now generate and assign a display name for it automatically, instead of leaving it unnamed. Subagent types that are purely observers, such as Explore or Plan, are skipped.

Why

Automatic names make it easier to tell background subagents apart when several are running at once.

Read from
Feature flag
tengu_zinc_harbor Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.275: off

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 v2.1.275. 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_zinc_harbor

See this entry in the whole of v2.1.275 →