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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.301 ·

Background tasks pass more detail when they wake Claude up

A background task that wakes Claude now passes along where its prompt came from and details about its notices

Under the hood Internal Changes
JSON All of v2.1.301
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Background TasksArea: what it touches
Internal ChangesKind: in v2.1.301,
Internal ChangesSection of the release

Unclear It is not clear what the added notice details or the extra MCP information change for users.

What

When a background task finishes, it can send Claude a prompt to wake it up. Before, that prompt was always labelled as a task notification. It now passes along where the prompt really came from, plus details about the notices it carries, such as their lengths, which ones belong to the task and which runs they came from.

Claude Code also passes one more piece of information when it processes results from MCP tools, which are tools provided by outside programs.

Why

Prompts from background tasks can now say where they came from instead of carrying a fixed label.

Read from
Feature flag
tengu_mcp_connect_timeout_retry Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.301: on

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.301. It isn't a statement about your account. What a flag value here can and cannot tell you

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 the added notice details or the extra MCP information change for users.

See this entry in the whole of v2.1.301 →

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