Error listings
Fix GitHub MCP OAuth authentication failure in Claude Code web sessions (claude.ai/code) where the authorization URL routes to the deprecated Google Drive MCP install page Includes evidence for Claude Code troubleshooting demand.
HTTP 403 / Server Turned Down — GitHub MCP OAuth flow lands on api.anthropic.com/mcp/gdrive/google/install instead of GitHub consent screen Fix regression in LiteLLM v1.85.0 where Bedrock AWS pass-through through the /converse endpoint returns 200 status but body is empty, causing silent data loss for clients consuming AI responses through LiteLLM proxy Includes evidence for LiteLLM troubleshooting demand.
Bedrock pass-through /converse returns HTTP 200 OK with empty response body on v1.85.0 — callers receive no content despite successful status code Fix spend logging gap where Ollama Cloud requests via LiteLLM proxy never appear in spend logs/Request Log UI due to non-unique sequential ID collisions with existing rows Includes evidence for LiteLLM troubleshooting demand.
LiteLLM_SpendLogs INSERT fails silently on PK constraint when Ollama Cloud returns short sequential IDs like chatcmpl-213 that collide across users How to handle OpenAI Responses API background mode failures with proper exception classification and retry logic Includes evidence for OpenAI API troubleshooting demand.
background responses failures return opaque error.code (e.g. "server_error", "rate_limit_exceeded") that does not map to SDK exception classes; HTTP poll returns 200 OK so no typed exception raised Repair Claude Code session state corruption where post-compaction request construction injects system-role message into messages array, making session permanently unrecoverable without /clear Includes evidence for Claude Code troubleshooting demand.
API Error: 400 role 'system' is not supported on this model — client builds malformed request after large twice-compacted session Distinguish between Anthropic 429 rate-limit errors and 529 overloaded_server errors to implement correct retry/backoff strategies for production LLM applications Includes evidence for Anthropic API troubleshooting demand.
HTTP 529 overloaded_error fires when Anthropic capacity is saturated regardless of tier; distinct from 429 rate limit — all three dimensions (RPM, ITPM, OTPM) must be tracked separately Fix Claude Desktop and claude.ai failing to establish OAuth flow for custom MCP servers despite all endpoints being spec-compliant and tested with curl Includes evidence for Claude Code troubleshooting demand.
OAuth flow never initiates — browser opens to about:blank, prompts to reopen Claude Desktop, creating infinite loop; web UI shows 'There was an error connecting...' Fix OpenAI Codex API returning 429 usage_limit_reached; credential pool keeps retrying exhausted OAuth accounts instead of rotating to available ones Includes evidence for OpenAI API troubleshooting demand.
HTTP 429 error.type="usage_limit_reached" message "The usage limit has been reached" — credential pool retries same exhausted account instead of immediate rotation Resolve GitHub-hosted MCP OAuth authentication failure exclusively in Claude Code web (claude.ai/code) sessions while desktop variant succeeds Includes evidence for Claude Code troubleshooting demand.
GitHub MCP OAuth flow fails specifically in claude.ai/code web sessions — standard Desktop CLI OAuth works but web-hosted sessions cannot complete GitHub authentication Fix Claude Code MCP servers timing out post-OAuth handshake, where authentication succeeds but the SSE stream becomes unreachable Includes evidence for Claude Code troubleshooting demand.
MCP server HTTP/SSE connection times out immediately after OAuth authentication completes successfully — successful login followed by unreachable SSE endpoint 开发者无法通过标准 except RateLimitError 捕获异步调用中的 429 错误，需要稳定的异常代码来区分不同的 API 失败类型 Includes evidence for OpenAI API troubleshooting demand.
Background response exception lacks stable code/name mapping — RateLimitError cannot be caught reliably 在 VSCode 中使用 Claude Code 扩展配合 chrome-devtools-mcp 时，每次操作都需手动批准权限请求，严重影响工作流效率，用户需要配置静默自动授权 Includes evidence for Claude Code troubleshooting demand.
chrome-devtools-mcp keeps asking permissions repeatedly — no way to auto-allow in .claude/settings.json 用户在使用 Claude Haiku 4.5 时遭遇大量请求失败（5xx/timeout），需要了解是否计划内故障以及如何降级或重试 Includes evidence for Anthropic API troubleshooting demand.
Elevated error rates on Claude Haiku 4.5 model requests 用户调用 Cloudflare REST API 获取 zone 列表时持续收到 524 超时错误，影响自动化运维工具和监控脚本 Includes evidence for Cloudflare troubleshooting demand.
A timeout occurred (Error 524) when calling https://api.cloudflare.com/client/v4/zones GitHub Actions workflow 中拉取私有子模块时认证失败，CI/CD 流程被阻断，需要配置正确的 token/SSH key Includes evidence for GitHub Actions troubleshooting demand.
Permission denied (publickey). fatal: Could not read from remote repository 用户使用 GitHub Copilot 时首次尝试即被拒绝并收到 'API limit reached' 消息，影响付费订阅用户的正常使用体验 Includes evidence for GitHub Copilot troubleshooting demand.
"You've reached your API limit" on first try 开发者在 Claude Code 中集成 Supabase MCP Server 时反复遇到 Unauthorized 错误，导致 AI 代理无法读取数据库配置进行代码生成 Includes evidence for Claude Code troubleshooting demand.
MCP server filesystem connection fails — Unauthorized error on Supabase MCP connector 在 Vercel 部署 Next.js 应用时构建命令退出码 127，表示命令未找到（如 bun、node_modules 未安装），用户需要排查具体缺失的依赖 Includes evidence for Vercel troubleshooting demand.
Error: Command "build" exited with 127 Anthropic API 用户在模型不可用（过载、维护期间）时收到错误，需要了解恢复时间和规避策略 Includes evidence for Anthropic API troubleshooting demand.
overloaded_error / model unavailable / maintenance mode Claude Code 用户在 Fast Mode 下因 Cloudflare 524 连接中断导致静默退出，需了解如何处理和恢复会话 Includes evidence for Claude Code troubleshooting demand.
Fast mode unavailable: Fast ... Cloudflare terminates connection with 524 error → Silent session exit with resume link