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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

Subagent results may start with a note about tools used

A subagent's result may now begin with a note about the tools it used before it is passed back to the main conversation

You'll notice Improvements
JSON All of v2.1.311
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Background AgentsArea: what it touches
ImprovementsKind: in v2.1.311,
ImprovementsSection of the release

Unclear What the note says and when it is switched on are not known.

What

A subagent is a separate Claude worker the main conversation hands a task to. When it finishes and returns a result directly, without a handback, Claude Code may now put a note about the tools it used at the start of that result. Before, only a handback warning and notes about being cut off were added there.

Why

This can change what the main conversation sees from a subagent.

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 doubtWhat the note says and when it is switched on are not known.

See this entry in the whole of v2.1.311 →

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