You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
MCPArea: what it touches
ImprovementsKind: in v2.1.233,
ImprovementsSection of the release
What
The MCP tool-list refresh tool joined the set of tools withheld from subagents. A subagent that calls it gets the standard refusal telling it to finish with the tools it has.
Details
The refusal text is the existing shared one, so no new message shape.
Only subagents are affected; the main session can still refresh MCP tools.
Evidence
is not available inside subagents. Complete the task with the tools provided and return findings to the orchestrator.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
