You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.225,
Internal ChangesSection of the release
What
The protobuf-shaped event metadata changes which fields it carries, removing two code and repo identifiers and adding MCP identity plus reported account details.
Details
Removed: repl_code and git_remote_url.
Added: mcp_server_name, mcp_tool_name, an optional event_metadata_vars string, and a client_reported_auth submessage carrying account_uuid and organization_uuid.
The experiment-exposure message separately gains variation_key, and user_attributes / experiment_metadata become optional, serializing as undefined rather than an empty string.
Evidence
client_reported_auth
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
