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Sweep 12 Nov 2026 · 23:00Z Build v2.1.323 540 read Stable v2.1.311 Latest v2.1.323 Next v2.1.323 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.323 ·

Claude Code now waits for long-running tasks from MCP tools

When an MCP tool returns a long-running task, Claude Code now waits for it up to the tool's timeout instead of always running it in the background

You'll notice Improvements
JSON All of v2.1.323
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.323,
ImprovementsSection of the release

Unclear It is not clear whether the new waiting behaviour is switched on for everyone or held behind a switch.

What

MCP (Model Context Protocol) is the way Claude Code connects to tools from outside services. Some MCP tools answer with a task that is still running. Claude Code now hands such a task off and waits for it to finish, with a deadline based on the tool's timeout. Before, it always sent the task to run in the background.

Why

A long-running MCP tool task can now finish and give its result within the same tool call.

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 doubtIt is not clear whether the new waiting behaviour is switched on for everyone or held behind a switch.

See this entry in the whole of v2.1.323 →

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