Claude Code v2.1.199 Release Notes

The Claude Code v2.1.199 update addresses numerous stability and usability issues, including fixes for SSL certificate errors, streaming response handling, and background agent management.

• Stacked slash-skill invocations now load up to 5 leading skills instead of just the first.
• SSL certificate errors now fail immediately with actionable guidance rather than burning retries.
• Partial streaming responses are preserved when API errors occur mid-stream.
• Subagents now correctly report API errors and return partial work to the parent agent.
• The background-agent daemon on Linux no longer kills itself after an unclean shutdown leaves a corrupted worker record.
• Transient server rate-limit errors (429s) are automatically retried with backoff for subscribers.
• CLAUDE_CODE_RETRY_WATCHDOG raises the default retry count to 300 and lifts the cap of 15 on CLAUDE_CODE_MAX_RETRIES.

These changes improve reliability by ensuring error visibility, preventing data loss during interruptions, and enhancing resilience against transient server issues.