Under the hood
MCP tool data sent to the UI now includes where each MCP client came from
What
When Claude Code passes information about connected MCP clients (Model Context Protocol servers providing extra tools) into the data used to render the interface, each client entry now includes a source field alongside its name and type, computed by a new internal helper.
Why
This adds provenance information about MCP tools that the interface (or other consumers of this data) can use, though the finding doesn't specify what visibly changes for users yet.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It's unclear whether or how this source information is currently surfaced to the user in the interface.