Error listings
Fix Claude Code failing to execute because an MCP server tool is not recognized or registered by the CLI Includes evidence for Claude Code troubleshooting demand.
No handler registered for 'mcp__tools' / MCP tool not registered Fix Cloudflare Workers accessing R2 Object Storage returning AccessDenied — debug bucket policies and Worker bindings Includes evidence for Cloudflare troubleshooting demand.
AccessDenied: You have been denied access — R2 Object Storage operation forbidden by bucket policy Fix Cursor IDE unable to activate or verify subscription due to network connectivity or firewall blocking license verification Includes evidence for Cursor troubleshooting demand.
Failed to activate your subscription — connection reset by peer / license server unreachable Fix Docker BuildKit failing to resolve COPY/ADD paths in Dockerfiles, especially in CI environments with changed directory structures Includes evidence for Docker troubleshooting demand.
failed to solve: failed to compute cache key: /path/to/context does not match specified location Debug Kubernetes pods repeatedly crashing with OOMKilled after setting memory resource limits — find optimal memory allocation Includes evidence for Kubernetes troubleshooting demand.
kubectl describe pod → Status: Waiting → Reason: CrashLoopBackOff → Last State: Terminated → Reason: OOMKilled Fix OpenAI Chat Completions API rejecting requests where user message content is null or empty — common in streaming/conversational UIs after user cancels input Includes evidence for OpenAI API troubleshooting demand.
InvalidRequestError: 400 InvalidRequestError {'message': "Invalid type: 'None'. Expected one of ('string', 'list[string]', 'list[{\"type\": \"text\", \"text\": ...}\]') - 'content' from {'role': 'user'}.", 'type': 'invalid_request_error', 'param': 'messages', 'code': None} Fix Vercel serverless functions timing out during long-running API calls, database queries, or external service invocations Includes evidence for Vercel troubleshooting demand.
FUNCTION_INVOCATION_TIMEOUT: Request exceeded the configured duration limit Diagnose why Docker Compose service remains in unhealthy state after restart; fix healthcheck configuration, dependency ordering, or resource constraints Includes evidence for Docker troubleshooting demand.
Service marked as 'unhealthy' in docker-compose ps output after container restart or update Fix GitHub Copilot 'forbidden' error that interrupts sessions mid-use; requires re-authentication or license renewal without restarting the IDE Includes evidence for GitHub Copilot troubleshooting demand.
Forbidden: Access to this endpoint is forbidden — occurs after 2-3 messages using Sonnet 4.5 or other models Fix Claude Code OAuth login failure caused by DNS resolution failure for auth.anthropic.com, especially Windows users on home networks Includes evidence for Claude Code troubleshooting demand.
OAuth login fails: auth.anthropic.com does not resolve via DNS — timeout error prevents authentication Resolve OpenAI 429 error caused by exhausted subscription quota (not temporary rate limiting); need to upgrade plan, switch keys, or adjust usage Includes evidence for OpenAI API troubleshooting demand.
429 Too Many Requests with error code insufficient_quota — distinguishable from rate_limit type Fix OpenRouter rejection when sending images to text-only models (e.g., deepseek-v4-pro); need to detect modality mismatch before tool invocation Includes evidence for OpenRouter troubleshooting demand.
HTTP 404: No endpoints found that support image input Developer discovers unexpectedly high token usage in Claude Code, searching for causes beyond normal rate limits — specifically cache-related cost inflation Includes evidence for Claude Code troubleshooting demand.
Prompt cache broken — silently inflates costs 10-20x in Claude Code; downgrading helps Developer automating Claude Code encounters unexplained daily quota exhaustion, seeking explanation for silent retry behavior Includes evidence for Claude Code troubleshooting demand.
Rate-limit errors appear as generic failures triggering silent retry loops, draining daily budget in minutes Developer on paid Claude Code plan experiencing rapid quota drain, wants to understand why usage limits deplete so quickly and how to extend usage time Includes evidence for Claude Code troubleshooting demand.
Usage limits exhausted in Claude Code — 'Maxed out every Monday, resets Saturday' on $100/mo Max plan Docker user on macOS encountering permission denied after system update or when running commands outside default user group, needs to restore daemon connectivity Includes evidence for Docker troubleshooting demand.
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? permission denied Developer getting 504 FUNCTION_INVOCATION_TIMEOUT on Vercel serverless functions, needs to optimize or extend execution time Includes evidence for Vercel troubleshooting demand.
FUNCTION_INVOCATION_TIMEOUT — 504 error when serverless function exceeds execution time limit Developer needs to handle Anthropic's silent overloaded errors programmatically with proper retry logic, jitter, and fallback routing to maintain production reliability Includes evidence for Anthropic API troubleshooting demand.
overloaded_error: HTTP 529 — The API is temporarily overloaded. 529 errors can occur when APIs experience high traffic across all users Cursor user cannot use the configured model — IDE reports model unavailable, blocking development flow. User needs to re-authenticate API key or switch model Includes evidence for Cursor troubleshooting demand.
Model not available / cannot access selected AI model in Cursor IDE GitHub Actions job fails when trying to interact with PRs despite having pull-requests permission. Developer needs granular permission fixes for workflow secrets and OIDC tokens Includes evidence for GitHub Actions troubleshooting demand.
Job fails despite pull-requests: write permission in workflow — permission denied commenting on PR