What
Requests Claude Code sends through its proxy to /worker/ addresses now include a traceparent header when one is available. A traceparent header is a standard label that lets a request be followed across systems for tracing.
The WebFetch tool, which fetches web pages, is now also given the current turn's messages and the point at which the conversation would be automatically compacted (summarised to save space).
Why
Requests are easier to trace, and web fetching can take the size of the conversation into account.