You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.221,
ImprovementsSection of the release
What
MCP servers declared in an agent's frontmatter are connected through the shared dial helper with a timeout and abort signal, so a hung server can no longer stall subagent startup indefinitely.
Details
previously the code awaited connectToServer directly with no bound
on timeout it logs a warning and returns no client
if the server entry was newly created, the connection is still cleaned up should it land after the timeout
Evidence
subagent MCP server connect
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
