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

# Configuration

> Environment variables and initialization options

<Tabs>
  <Tab title="Python">
    ## Environment Variables

    ```bash theme={null}
    FALLOM_API_KEY=your-api-key
    FALLOM_BASE_URL=https://spans.fallom.com  # or http://localhost:8001 for local dev
    ```

    ## Initialization Options

    ```python theme={null}
    fallom.init(
        api_key="your-api-key",      # Or use FALLOM_API_KEY env var
        base_url="https://spans.fallom.com",  # Or use FALLOM_BASE_URL env var
        capture_content=True         # Set False for privacy mode
    )
    ```

    ## Privacy Mode

    For companies with strict data policies, disable prompt/completion capture:

    ```python theme={null}
    # Via parameter
    fallom.init(capture_content=False)

    # Or via environment variable
    FALLOM_CAPTURE_CONTENT=false
    ```

    In privacy mode, Fallom still tracks:

    | Captured                             | Not Captured         |
    | ------------------------------------ | -------------------- |
    | ✅ Model used                         | ❌ Prompt content     |
    | ✅ Token counts                       | ❌ Completion content |
    | ✅ Latency                            |                      |
    | ✅ Session/config context             |                      |
    | ✅ Prompt key/version (metadata only) |                      |
  </Tab>

  <Tab title="TypeScript">
    ## Environment Variables

    ```bash theme={null}
    FALLOM_API_KEY=your-api-key
    FALLOM_BASE_URL=https://spans.fallom.com
    FALLOM_CAPTURE_CONTENT=true  # set to "false" for privacy mode
    ```

    ## Privacy Mode

    Disable prompt/completion capture:

    ```typescript theme={null}
    fallom.init({ captureContent: false });
    ```

    In privacy mode, Fallom still tracks:

    | Captured                             | Not Captured         |
    | ------------------------------------ | -------------------- |
    | ✅ Model used                         | ❌ Prompt content     |
    | ✅ Token counts                       | ❌ Completion content |
    | ✅ Latency                            |                      |
    | ✅ Session/config context             |                      |
    | ✅ Prompt key/version (metadata only) |                      |
  </Tab>
</Tabs>

## Get Your API Key

<Card title="Open Dashboard" icon="gauge" href="https://app.fallom.com">
  Get your API key from project settings
</Card>

## Next Steps

<CardGroup cols={2}>
  <Card title="Model A/B Testing" icon="bolt" href="/model-testing">
    Test different models to optimize cost and performance.
  </Card>

  <Card title="Prompt Management" icon="route" href="/prompt-testing">
    Experiment with prompts to improve outputs.
  </Card>
</CardGroup>