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

# Create Guard Rail

> Create a new guard rail for compliance monitoring.

Guard rails monitor AI responses during calls to catch compliance violations and trigger automated actions. Learn more in the [Guard Rails documentation](/tutorials/guard-rails).

### Headers

<ParamField header="authorization" type="string" required>
  Your API key for authentication.
</ParamField>

### Body Parameters

#### TCPA Guard Rails

<ParamField body="type" type="string" required>
  The type of TCPA guard rail:

  * `tcpa:ai_disclosure` - AI must disclose it's an AI
  * `tcpa:recording_disclosure` - Must disclose the call is being recorded
  * `tcpa:self_introduction` - Must identify who is calling
  * `tcpa:opt_out` - Monitors for user opt-out requests

  The `tcpa:opt_out` type is different from the others: it's not time-based and instead monitors the entire conversation to detect if the agent continues to engage after the user opts out. The `config.end_seconds` field is not needed for this type.
</ParamField>

<ParamField body="config" type="object">
  Configuration object. Required for time-based TCPA guard rails (`tcpa:ai_disclosure`, `tcpa:recording_disclosure`, `tcpa:self_introduction`).

  * `end_seconds` (number) - Time window in seconds. If the required disclosure is not made within this time, the configured actions will trigger.
</ParamField>

<ParamField body="attachments" type="array">
  Array of sources to attach this guard rail to.

  * `source_type` (string, required) - Type of source: `PERSONA`, `PATHWAY`, or `INBOUND`
  * `source_id` (string, required) - ID of the source to attach to
  * `actions` (array, required) - Actions to take when the guard rail triggers
</ParamField>

#### Custom Guard Rails (Enterprise)

Custom guard rails use your own detection prompt. Limited to 5 per organization.

<ParamField body="type" type="string" required>
  Must be `custom` for custom guard rails.
</ParamField>

<ParamField body="name" type="string" required>
  Display name for the guard rail. This doesn't affect the behaviour and is only for your reference.
</ParamField>

<ParamField body="description" type="string" required>
  Description of what this guard rail detects. This doesn't affect the behaviour and is only for your reference.
</ParamField>

<ParamField body="prompt" type="string" required>
  Detection prompt that describes what to flag.
</ParamField>

#### Action Types

Each attachment requires an `actions` array. Available action types:

| Action Type    | Description                     | Config                               |
| -------------- | ------------------------------- | ------------------------------------ |
| `end_call`     | Immediately terminate the call  | None                                 |
| `transfer`     | Transfer to a human agent       | `{ "phone_number": "+15551234567" }` |
| `move_to_node` | Jump to a specific pathway node | `{ "node_id": "node-uuid" }`         |

### Response

<ResponseField name="data" type="object">
  The created guard rail object containing `id`, `org_id`, `type`, `name`, `description`, `prompt`, `config`, `attachments`, `created_at`, and `updated_at`.
</ResponseField>

<ResponseField name="errors" type="array">
  Any errors that occurred (null if none).
</ResponseField>

<RequestExample>
  ```json TCPA Time-based theme={null}
  {
    "type": "tcpa:ai_disclosure",
    "config": {
      "end_seconds": 30
    },
    "attachments": [
      {
        "source_type": "PERSONA",
        "source_id": "98765432-1234-1234-1234-123456789012",
        "actions": [
          { "type": "end_call" }
        ]
      }
    ]
  }
  ```

  ```json TCPA Opt-Out theme={null}
  {
    "type": "tcpa:opt_out",
    "attachments": [
      {
        "source_type": "PATHWAY",
        "source_id": "11111111-2222-3333-4444-555555555555",
        "actions": [
          { "type": "end_call" }
        ]
      }
    ]
  }
  ```

  ```json Custom (Enterprise) theme={null}
  {
    "type": "custom",
    "name": "No Medical Advice",
    "description": "Prevents the agent from providing medical advice",
    "prompt": "Flag if the agent provides any medical advice, diagnosis, or treatment recommendations",
    "attachments": [
      {
        "source_type": "PERSONA",
        "source_id": "98765432-1234-1234-1234-123456789012",
        "actions": [
          { "type": "transfer", "config": { "phone_number": "+15551234567" } }
        ]
      }
    ]
  }
  ```
</RequestExample>

<ResponseExample>
  ```json Success Response theme={null}
  {
    "data": {
      "id": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
      "org_id": "12345678-1234-1234-1234-123456789012",
      "type": "tcpa:ai_disclosure",
      "name": null,
      "description": null,
      "prompt": null,
      "config": {
        "end_seconds": 30
      },
      "attachments": [
        {
          "source_type": "PERSONA",
          "source_id": "98765432-1234-1234-1234-123456789012",
          "actions": [
            { "type": "end_call" }
          ]
        }
      ],
      "created_at": "2025-01-15T10:30:00.000Z",
      "updated_at": "2025-01-15T10:30:00.000Z"
    },
    "errors": null
  }
  ```

  ```json Error Response (Duplicate Type) theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "INVALID_PARAMETER",
        "message": "Cannot create multiple guard rails of the same type"
      }
    ]
  }
  ```

  ```json Error Response (Enterprise Required) theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "ENTERPRISE_REQUIRED",
        "message": "Creating custom guard rails are only available for enterprise users"
      }
    ]
  }
  ```

  ```json Error Response (Max Custom Guard Rails) theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "INVALID_PARAMETER",
        "message": "Cannot create more than 5 custom guard rails"
      }
    ]
  }
  ```
</ResponseExample>

***

Docs for agents: [llms.txt](/llms.txt)