Re_Backend/API_KEY_TROUBLESHOOTING.md

🔑 API Key Troubleshooting Guide

⚠️ Problem: Getting 404 Errors for ALL Claude Models

If you're getting 404 "model not found" errors for multiple Claude models, the issue is likely with your Anthropic API key, not the model versions.

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🔍 Step 1: Verify Your API Key

Check Your API Key Status

1. Go to: https://console.anthropic.com/
2. Log in to your account
3. Navigate to Settings → API Keys
4. Check:
   • ✅ Is your API key active?
   • ✅ Does it have an active billing method?
   • ✅ Have you verified your email?
   • ✅ Are there any usage limits or restrictions?

API Key Tiers

Anthropic has different API access tiers:

Tier	Access Level	Requirements
Free Trial	Limited models, low usage	Email verification
Paid Tier 1	All Claude 3 models	Add payment method, some usage
Paid Tier 2+	All models + higher limits	More usage history

If you just created your API key:

• You might need to add a payment method
• You might need to make a small payment first
• Some models might not be available immediately

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🎯 Step 2: Try the Most Basic Model (Claude 3 Haiku)

I've changed the default to claude-3-haiku-20240307 - this should work with ANY valid API key.

Restart Your Backend

IMPORTANT: You must restart the server for changes to take effect.

# Stop the current server (Ctrl+C)
# Then start again:
cd Re_Backend
npm run dev

Check the Startup Logs

Look for this line:

[AI Service] ✅ Claude provider initialized with model: claude-3-haiku-20240307

Test Again

Try generating a conclusion. You should see in logs:

[AI Service] Generating with Claude model: claude-3-haiku-20240307

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🔧 Step 3: Check for Environment Variable Overrides

Your .env file might be overriding the default model.

Check Your .env File

Open Re_Backend/.env and look for:

CLAUDE_MODEL=...

If it exists:

1. Delete or comment it out (add # at the start)
2. Or change it to Haiku:

   CLAUDE_MODEL=claude-3-haiku-20240307
   

3. Restart the server

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🐛 Step 4: Verify API Key is Loaded

Add this temporary check to see if your API key is being loaded:

Option A: Check Logs on Startup

When you start the server, you should see:

[AI Service] ✅ Claude provider initialized with model: claude-3-haiku-20240307

If you DON'T see this:

• Your API key might be missing or invalid
• Check .env file has: CLAUDE_API_KEY=sk-ant-api03-...

Option B: Test API Key Manually

Create a test file Re_Backend/test-api-key.js:

const Anthropic = require('@anthropic-ai/sdk');
require('dotenv').config();

const apiKey = process.env.CLAUDE_API_KEY || process.env.ANTHROPIC_API_KEY;

console.log('API Key found:', apiKey ? 'YES' : 'NO');
console.log('API Key starts with:', apiKey ? apiKey.substring(0, 20) + '...' : 'N/A');

async function testKey() {
  try {
    const client = new Anthropic({ apiKey });
    
    // Try the most basic model
    const response = await client.messages.create({
      model: 'claude-3-haiku-20240307',
      max_tokens: 100,
      messages: [{ role: 'user', content: 'Say hello' }]
    });
    
    console.log('✅ API Key works!');
    console.log('Response:', response.content[0].text);
  } catch (error) {
    console.error('❌ API Key test failed:', error.message);
    console.error('Error details:', error);
  }
}

testKey();

Run it:

cd Re_Backend
node test-api-key.js

---

💡 Step 5: Alternative - Use OpenAI or Gemini

If your Anthropic API key has issues, you can switch to another provider:

Option A: Use OpenAI

1. Get OpenAI API key from: https://platform.openai.com/api-keys

2. Add to .env:

   AI_PROVIDER=openai
   OPENAI_API_KEY=sk-...
   

3. Install OpenAI SDK:

   cd Re_Backend
   npm install openai
   

4. Restart server

Option B: Use Google Gemini

1. Get Gemini API key from: https://makersuite.google.com/app/apikey

2. Add to .env:

   AI_PROVIDER=gemini
   GEMINI_API_KEY=...
   

3. Install Gemini SDK:

   cd Re_Backend
   npm install @google/generative-ai
   

4. Restart server

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🎯 Quick Checklist

• My Anthropic API key is valid and active
• I have a payment method added (if required)
• My email is verified
• I've deleted/commented out CLAUDE_MODEL from .env (or set it to haiku)
• I've restarted the backend server completely
• I see the correct model in startup logs
• I've tested with the test script above

---

🆘 Still Not Working?

Check Your API Key Format

Valid format: sk-ant-api03-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Must start with sk-ant-
• Must be quite long (80+ characters)
• No spaces or line breaks

Get a New API Key

1. Go to https://console.anthropic.com/settings/keys
2. Delete old key
3. Create new key
4. Add payment method if prompted
5. Update .env with new key
6. Restart server

Contact Anthropic Support

If nothing works:

• Email: support@anthropic.com
• Check: https://status.anthropic.com/ (for service issues)
• Community: https://anthropic.com/community

---

🎯 Current System Default

The system now defaults to:

claude-3-haiku-20240307

This is the most basic Claude model that should work with any valid API key, even free tier.

If even Haiku doesn't work, there's a fundamental issue with your Anthropic API key or account status.

---

✅ Success Indicators

When everything is working correctly, you should see:

1. On server startup:

   [AI Service] ✅ Claude provider initialized with model: claude-3-haiku-20240307
   

2. When generating conclusion:

   [AI Service] Generating with Claude model: claude-3-haiku-20240307
   

3. In response:

   [AI Service] ✅ Conclusion generated successfully
   

No 404 errors! ✅