An AI-powered tool that instantly decodes API errors and logs into plain-English explanations with root causes and step-by-step fixes.

https://ai-api-error-analyzer.vercel.app

Paste any API error message, HTTP response, stack trace, or log snippet and receive an instant structured breakdown:

• ✅ Detects and analyzes common HTTP/API errors (400, 401, 403, 404, 429, 500, 502, 503)
• ✅ Handles CORS errors, JWT token issues, DNS failures, and connection timeouts
• ✅ Accepts raw logs, stack traces, JSON error bodies, and curl output
• ✅ AI-generated severity rating — Critical, High, Medium, or Low
• ✅ 5 pre-loaded example errors to try instantly
• ✅ One-click copy report for sharing in tickets or Slack
• ✅ No login required — fully public tool
• ✅ Dark terminal-style UI

• Node.js v18 or higher
• An Anthropic API key

# 1. Clone the repository
git clone https://github.com/b1polarbear1437/ai-api-error-analyzer.git

# 2. Navigate into the project folder
cd ai-api-error-analyzer

# 3. Install dependencies
npm install

# 4. Create a .env file in the project root
echo "ANTHROPIC_API_KEY=your-api-key-here" > .env

# 5. Start the development server
npm run dev

Then open http://localhost:5173 in your browser.

⚠️ Never commit your .env file. It is already listed in .gitignore.

ai-api-error-analyzer/
├── api/
│   └── analyze.js          # Vercel serverless proxy (keeps API key secure)
├── src/
│   ├── ApiErrorAnalyzer.jsx # Main application component
│   ├── App.jsx
│   └── main.jsx
├── public/
├── .env                    # Local API key (never committed)
├── .gitignore
├── vercel.json             # Vercel routing config
├── vite.config.js
└── package.json

For local development, add this to your .env file.
For production, add it in Vercel → Settings → Environment Variables.

This tool uses claude-sonnet-4-20250514:

With $5 in credits you get approximately ~650 requests.

💡 To reduce costs, switch the model in api/analyze.js to claude-haiku-4-5-20251001 ($1/$5 per million tokens) for ~3,000+ requests per $5.

• The Anthropic API key is stored only in Vercel's environment variables
• All API calls are routed through a server-side proxy (api/analyze.js) — the key is never exposed to the browser
• No user data is stored or logged
• The .env file is excluded from Git via .gitignore

400 401 403 404 408 422 429 500 502 503 CORS JWT DNS TIMEOUT

Reynaldo Valdez Jr
GitHub: @b1polarbear1437

This app is hosted on Vercel. Some ISPs (particularly in the Philippines such as Converge ICT and Globe) may block access due to DNS filtering.

If the site doesn't load, try one of these:

• Change your DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare)
• Install the Cloudflare WARP app (free, no data limit)
• Use a VPN such as ProtonVPN or Windscribe

The app works correctly — this is an ISP-level network restriction, not an issue with the application itself.

This project is open source and available under the MIT License.