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Sweep 29 Sep 2026 · 18:10Z Build v2.1.285 506 read Stable v2.1.280 Latest v2.1.285 Next v2.1.285 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.285 ·

Code for handing off turns and connecting added MCP servers was reworked

The code that hands a turn to another host, and that reports on MCP servers added during a session, appears in reworked form

Under the hood Internal Changes
JSON All of v2.1.285
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
Internal ChangesKind: in v2.1.285,
Internal ChangesSection of the release
What

The code that hands a turn to another host appears in reworked form. When handoff is not allowed, it answers that turn handoff is disabled. Otherwise it reports the handoff as a duplicate, accepted or converted. A session can wait, parked, until a host picks it up. The code that writes messages when an MCP server added during a session connects or fails was reworked too. An MCP server is an outside program that gives Claude extra tools.

Why

This affects how remote sessions and sessions run through the SDK are handed around and controlled.

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 doubtThis may be existing code that moved, and it is not clear whether any behaviour changed.

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