Troubleshooting
A roundup of frequent issues and error fixes for Claude Code, Codex CLI, OpenClaw, external integrations, and related tools. Maintained as separate pages per category — click to open one:
- Claude Code Specifics — first-launch connect, 401/403, invalid tokens, WebFetch, 200K context
- VPN / Proxy — use a proxy tool (Clash Verge example) when disconnected in mainland China
- Request Errors — 400 / 413 / 429 / 500 / context overflow
- Integration & Compatibility — 403 checklist, User-Agent, Base URL, IDE integration
- Codex CLI Specifics — Base URL, config files, 1M context, errors
- OpenClaw Specifics — install, provider config, Feishu channel
- Advanced Config & Efficiency — save tokens, CLAUDE.md, MCP, command cheat sheet
TIP
If something breaks, first check whether the group chat is reporting an outage. If there's no widespread feedback, it's likely a local issue.