Unclear It is not clear whether any error message you see changes as a result.
What
When a request to the API fails, Claude Code's error handling now also receives the response headers, the extra details a server sends back with a reply. Before, it got only the status code, the request and the reply data.
Why
This may let error messages use details such as rate-limit information or a request ID.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear whether any error message you see changes as a result.