https://github.com/anthropics/claude-code/issues/4034
It's really a trivial fix so I'm disappointed not to have received any input from the Anthropic folks all this time.
In that I pointed out that they are sending data back that shouldn't be and is not in compliance with their stated data usage policy [3]. Specifically, message ids which have no purpose other than to link surveys to chat history and this was being sent even when disabled (at the time. I haven't dug into the code since).
[1] https://github.com/anthropics/claude-code/issues/8036 [2] https://news.ycombinator.com/item?id=45838297 [3] https://code.claude.com/docs/en/data-usage