> ## Documentation Index
> Fetch the complete documentation index at: https://env.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# API Keys

> Configure your AI provider API keys

# API Keys

env connects directly to AI provider APIs. You'll need to add your own API keys to use each provider.

## Adding API Keys

1. Open **Settings** (⌘ + ,)
2. Navigate to **API Keys**
3. Enter your key for each provider you want to use
4. Click **Save**

<Note>
  API keys are stored securely in your macOS Keychain. They never leave your device.
</Note>

## Getting API Keys

### Anthropic (Claude)

1. Go to [console.anthropic.com](https://console.anthropic.com)
2. Sign up or log in
3. Navigate to **API Keys**
4. Click **Create Key**
5. Copy the key (starts with `sk-ant-`)

### OpenAI (GPT-4)

1. Go to [platform.openai.com](https://platform.openai.com)
2. Sign up or log in
3. Navigate to **API Keys**
4. Click **Create new secret key**
5. Copy the key (starts with `sk-`)

### Google (Gemini)

1. Go to [aistudio.google.com](https://aistudio.google.com/app/apikey)
2. Sign in with your Google account
3. Click **Create API Key**
4. Copy the key

### xAI (Grok)

1. Go to [console.x.ai](https://console.x.ai)
2. Sign up or log in
3. Navigate to **API Keys**
4. Create a new key
5. Copy the key

## Security

<Warning>
  Never share your API keys. Treat them like passwords.
</Warning>

env takes security seriously:

* **Local Storage**: Keys are stored in macOS Keychain, encrypted at rest
* **No Telemetry**: We don't collect or transmit your keys
* **Direct Connection**: API calls go directly to providers, not through our servers

## Troubleshooting

### "Invalid API Key" Error

* Double-check for extra spaces when pasting
* Ensure the key hasn't been revoked in your provider dashboard
* Verify you have billing set up (some providers require it)

### "Rate Limited" Error

* You've hit your provider's rate limit
* Wait a few minutes or upgrade your plan with the provider