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Reading a new release v2.1.251 Analysing changes · 2/5 Sorting the findings · 1/4 steps 470 findings $18.91 so far

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.105 13 Apr 2026

Custom Subagent Status Lines

What

Plugins can now define a custom status line command that generates per-subagent status displayed in the agent panel.

Details

Configure via the subagentStatusLine field in plugin settings (allowlisted alongside agent)
The command receives task metadata as JSON on stdin and should emit JSON lines on stdout
Displays custom status per-teammate in the agent panel UI

Evidence

Subagent status line (search for "subagentStatusLine")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.105 →