Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
MCPArea: what it touches
Internal ChangesKind: in v2.1.280,
Internal ChangesSection of the release
What
When Claude Code runs a tool call (including calls to MCP servers, which let Claude use external tools), it now computes an offCriticalPath flag. This flag is true when the call belongs to a background agent or a task that isn't part of the main flow of work. It's passed into the MCP call's watchdog (which monitors calls for problems) and into the logic that decides whether to run things in the background automatically.
Why
Knowing whether a call is off the critical path lets Claude Code treat background work differently from work the user is actively waiting on, which can affect scheduling and monitoring behavior.
