Developer error message triage
Paste an exact Claude Code, Codex, MCP, ComfyUI, Gemini CLI or Vite error. A deterministic browser-side router identifies the most likely owner among 21 individually reviewed resolution guides; it does not upload the log or generate an unverified AI answer.
21 reviewed guides across 6 troubleshooting groups. Start with the first causal error, not the final cascade.
Runs only in this browser
Find the correct resolution path
Paste the exact error plus one nearby line. The router matches stable product, status-code and function-name signals; it says unknown when the evidence is insufficient.
Privacy: no log text is sent to EasyTool. Redact tokens, email addresses and personal paths before sharing a result elsewhere.
Paste an exact error to begin.
Include the status code, named function or product and one nearby log line. The text stays in this browser.
How to use these guides
- Copy the exact first error and 10–30 nearby log lines; redact secrets and personal paths.
- Choose the guide whose title matches that error owner, not merely the product name.
- Apply one diagnostic branch at a time and preserve a known-good baseline.
- Use the verification gate before calling a workaround permanent.
For Claude, Codex and MCP configuration problems, begin with the AI Agent Tools Hub. For a broad list of working browser utilities, use the Tools Directory.
Claude Code
Claude Code 529 Overloaded Error: Retry, Backoff & Status Checks
Claude Code repeatedly returns API Error 529 Overloaded? Check provider status, retry with backoff, reduce context and avoid deleting working credentials for a server-side error.
Claude Code MCP Failed to Connect: Config, OAuth & Stdio
Fix Claude Code MCP connection failures by separating config, scope approval, stdio startup, HTTP/SSE transport, OAuth, and zero-tool discovery errors.
Claude Code Not Logged In: /login, OAuth & API Key Fix
Fix Claude Code
Prompt is too long - Claude Code context window
Prompt is too long explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
You've hit your session limit / weekly limit - Claude Code
You've hit your session limit explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Codex and Windows
code=3221225477 - Codex Windows desktop crashes on launch
code=3221225477 explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Codex desktop unresponsive with long threads and MCP auto-start duplicates
Codex desktop unresponsive explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Fix Codex CreateProcessWithLogonW Failed: 5 (1056/1326/1385/1909)
Diagnose Codex Windows sandbox process-launch errors 5, 1056, 1326, 1385 and 1909 using sandbox logs and controlled tests—without weakening system ACLs.
Fix Codex SetNamedSecurityInfoW Failed: 5 (WindowsApps ACL)
Diagnose Codex SetNamedSecurityInfoW failed: 5 and grant read ACE errors by checking the target path and sandbox logs, without taking ownership of WindowsApps.
MCP auth session does not refresh - Codex OAuth
MCP auth/session does not refresh explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
ComfyUI and visual AI
Fix ComfyUI CUDA Out of Memory (torch.cuda.OutOfMemoryError)
Diagnose ComfyUI torch.cuda.OutOfMemoryError by failing stage and real PyTorch memory telemetry, then apply the smallest supported memory change.
Fix FLUX Black Image Output in ComfyUI
Fix black FLUX images in ComfyUI by separating file-layout, loader, VAE, precision, NaN and memory failures and returning to the official workflow baseline.
Gemini CLI
401 / 403 PERMISSION_DENIED - Gemini CLI authentication errors
401 Unauthorized explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
429 Too Many Requests / quota exceeded - Gemini CLI
429 Too Many Requests explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
DISCONNECTED - Gemini CLI MCP server is not connected or has errors
DISCONNECTED explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
MCP, OAuth and agent infrastructure
Invalid file permission - MCP filesystem or design tool
Invalid file permission explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
MCP server crashed unexpectedly
MCP server crashed unexpectedly explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Missing environment variable - MCP server startup
Missing environment variable explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
OAuth token expired or revoked - AI coding tools and MCP
OAuth token expired explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Rate limit exceeded - MCP tool call
Rate limit exceeded explained: meaning, common causes, fastest fix, safe fix, diagnostics, related errors, and related tools.
Vite and frontend builds
Review boundary
Being present in the repository does not make a legacy page eligible for this hub. A guide is added only after its claims, commands, sources, overlap and user-visible result are checked. This hub is intentionally ad-free so troubleshooting instructions are not interrupted by ad placements.
Found an incorrect branch or a version change? Use the contact page and include the guide URL plus a non-sensitive reproduction.