Follow Discord
Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.247 ·

Long-running MCP tools are wired to surface as background tasks in interactive sessions

Slow MCP tools are wired to appear as background tasks in interactive sessions.

Nothing to try yet In Development
JSON All of v2.1.247
Nothing to try yetTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
MCPArea: what it touches
In DevelopmentKind: in v2.1.247,
In DevelopmentSection of the release

The MCP call wrapper now carries a background-task handle, but nothing requests a task in this build.

What

The MCP call wrapper now carries a background-task handle and the application state setter, so a slow MCP tool could show up as a task in an ordinary interactive session. Subagent calls and non-interactive sessions are excluded.

Details
  • The existing auto-background delay for MCP calls is passed alongside the new handle.
  • Subagent calls are identified by the call carrying an agent id.
  • The task pathway this feeds is not requested by anything in this build.
Evidence

disallowTasks:

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

See this entry in the whole of v2.1.247 →

Feedback