Under the hood
Chrome bridge tool calls now log a start event that includes the size of the outgoing request
What
Before Claude Code dispatches a tool call through the Chrome bridge (the connection to the Claude in Chrome browser extension), it now emits a chrome_bridge_tool_call_started telemetry event. It records the tool name, session ID, message ID, timeout, transport method, and the byte size of the request, calculated from the combined permission and allowed-domains data being sent.
Why
This gives visibility into how large and how often Chrome bridge requests are, which can help diagnose performance or timeout issues with browser-based tool calls.