Claude Code v2.1.223 ·
Memory tools are now off-limits inside subagents
Subagents can no longer list or read memory files; those tools are stripped from their toolset.
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.223,
ImprovementsSection of the release
What
memory_list and memory_read can no longer be used from within a subagent.
Details
- both were added via a shared list spread into the disallowed-tool set builder, landing in
ALL_AGENT_DISALLOWED_TOOLS and CUSTOM_AGENT_DISALLOWED_TOOLS - tools in that set are filtered out of any agent's tool pool
- if a subagent definition still names one, the model is told the tool is not available inside subagents
Evidence
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.
Names in the bundlememory_listmemory_read
See this entry in the whole of v2.1.223 →
