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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 ·

Remote clients can check, cancel and wait on MCP tasks through a session

A session can now answer remote requests to look up, cancel or wait on an MCP task, under several conditions

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

Unclear It is not clear what turns MCP tasks on, so it is not known whether this works for every user.

What

MCP servers are outside programs that give Claude Code extra tools. Some of their tools run as tasks, which are jobs that can keep going for a while. A program connected to a Claude Code session from elsewhere can now send it an MCP task request. The request can do one of these:

  • tasks/get looks up a task
  • tasks/cancel cancels a task
  • wait waits on a task

Claude Code only serves the request when all of these hold:

  • the request carries a ticket
  • the request carries an interface version
  • MCP tasks are enabled

The request is refused when the tool is denied, or when the tool has PostToolUse hooks. A hook is a command you set up to run automatically at a certain moment, and PostToolUse hooks run after a tool call succeeds.

Why

This lets a remote connection do more with tools that a session hosts, including long-running MCP tasks.

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 what turns MCP tasks on, so it is not known whether this works for every user.
Anthropic's release notes agreeChanged cloud scheduled tasks: a PostToolUse hook from your own settings can no longer replace the plan in ExitPlanMode's result

See this entry in the whole of v2.1.323 →

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