---
title: How to generate Anthropic custom API Key
description: How to generate Anthropic custom API Key
canonical: https://voxwrite.app/docs/anthropic-api-key
locale: en
---

# How to generate Anthropic custom API Key

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How to generate Anthropic custom API Key

## How to Generate Anthropic API Key

Learn how to create and configure your custom Anthropic API key for Claude models in VoxWrite.

## Getting Your API Key

### Step 1: Create Anthropic Account

1. Visit [console.anthropic.com](https://console.anthropic.com)
2. Click **"Sign Up"** or **"Log In"**
3. Complete the registration process

### Step 2: Set Up Billing

1. Navigate to **"Settings"** → **"Billing"**
2. Add a payment method
3. Set an optional spending limit
4. **Note**: Anthropic requires billing setup before API access

### Step 3: Generate API Key

1. Go to **"API Keys"** in the dashboard
2. Click **"Create Key"**
3. Give your key a name (e.g., "VoxWrite")
4. Set permissions if prompted (usually read/write)
5. Click **"Create"**
6. **Copy immediately**: You won't see it again!

### Step 4: Configure VoxWrite

1. Open VoxWrite settings.
2. Go to **"API Keys"** section
  ![VoxWrite API Keys settings panel](https://voxwrite.app/assets/images/docs/voxwrite-api-keys-settings.webp)
3. Paste your API key in the designated field
  ![Input for Anthropic API Key](https://voxwrite.app/assets/images/docs/anthropic-key-image-1.webp)
4. Click **"Save"**

  To use Anthropic's models in VoxWrite for post-processing, please note that your balance must be positive.

## API Key Format

Anthropic keys follow this format:
```
sk-ant-api03-xxxxxxxxxxxxxxxxxxxxx
```

Make sure to copy the entire key including the `sk-ant-api03-` prefix.

## Security Best Practices

### Keep Your Key Safe

- ✅ **Never commit** to version control
- ✅ **Don't share** in screenshots or videos
- ✅ **Use environment variables** in code
- ✅ **Rotate regularly**: Create new keys periodically
- ✅ **Monitor usage**: Check the dashboard for anomalies

### Managing Multiple Keys

- Create separate keys for different applications
- Use descriptive names to identify each key's purpose
- Delete unused keys to minimize security risk

## Troubleshooting

### Authentication Errors

**"Invalid API Key"**
- Verify the key is copied completely
- Check for spaces or hidden characters
- Ensure the key hasn't been deleted
- Try creating a new key

**"Insufficient Credits"**
- Add a payment method in billing
- Check if you've exceeded your spending limit
- Verify your payment method is valid

### Rate Limit Issues

- Anthropic has rate limits based on your plan
- Implement exponential backoff in your requests
- Consider upgrading if you need higher limits
- Space out requests to stay within limits

### Connection Problems

- Verify internet connectivity
- Check [status.anthropic.com](https://status.anthropic.com) for service status
- Ensure firewall isn't blocking requests
- Try using a different network

---

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## Related

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