What
Auto mode sends a special header with its requests. Before, if a request was refused, Claude Code always stopped sending that header. Now, after server errors (HTTP 5xx), it only logs the problem and retries without the header when a further check passes. Otherwise the next request sends the header again.
Other changes:
- The warning now tells you to let your proxy or gateway pass that header through.
- When permission prompts are refused automatically instead of shown, for example in an unattended run, the notice about falling back to a billed safety check is added as a system warning and is marked as unacknowledged.
- In the same situation, the check that decides network access for sandboxed commands fails closed, meaning it reports itself unavailable instead of allowing access.
Why
Auto mode degrades more safely behind proxies and gateways and in runs with nobody watching. If you use a proxy, make sure it passes Claude Code's headers through.