Under the hood
Useful2 Signal3
The internal sync_files tool is now hidden from the model's tool list.
What's wrong with this entry?
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What
The internal sync_files tool belonging to a built-in MCP server is now filtered out of that server's tool list, so it is no longer offered to the model as something to call. Whether every call path applies the filter is not settled by this code.
Evidence
sync_files
Strings lifted out of the shipped bundle, so the claim above can be checked against them.