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

# API Authentication

> Authenticate Zixflow AI API requests using x-api-key and x-workspace-id

Zixflow AI APIs use **header-based authentication**. You must include these headers in every request:

```txt theme={null}
x-api-key: <your-api-key>
x-workspace-id: <your-workspace-id>
```

## Required Headers

* **`x-api-key`**: Your API key for the workspace.
* **`x-workspace-id`**: Your workspace ID.

## Where to find your API key and workspace ID

You can create/manage your API key and copy your workspace ID from the Zixflow dashboard:

* **Dashboard path**: `Settings > Developer > API Key`
* **Direct link**: `https://ai.zixflow.com/settings/workspace/developer`

## Example request

```bash theme={null}
curl -X POST "https://api-ai.zixflow.com/api/ingest/sms/v1/message/send" \
  -H "Content-Type: application/json" \
  -H "x-api-key: <your-api-key>" \
  -H "x-workspace-id: <your-workspace-id>" \
  -d '{ "recipient": "919876543210", "message": "Hello", "sender_id": "ZIXFLW", "route": "transactional" }'
```

## Screenshot

Below is the screen where you can copy both **API Key** and **Workspace ID**:

![Zixflow dashboard showing API Key and Workspace ID](https://res.cloudinary.com/salessimplifyimg/image/upload/v1770049679/developer_api_key.png)