> ## 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.

# Attach Phone Numbers to Persona

> Attach one or more inbound phone numbers to a persona. The same endpoint handles voice, SMS, and WhatsApp numbers — channel capability is determined by the number's own configuration, not by this call.

### Headers

**authorization** `string` *required*

Your API key for authentication.

### Path Parameters

**persona\_id** `string` *required*

The unique identifier of the persona to attach numbers to.

### Body Parameters

**inbound\_numbers** `string[]` *required*

Array of E.164 formatted phone numbers to attach to this persona. All numbers must already belong to your account.

### Response

**data** `object`

The updated persona object with the newly attached inbound numbers.

**persona object**

**id** `string`

Unique identifier for the persona.

**name** `string`

Display name of the persona.

**user\_id** `string`

ID of the user who owns this persona.

**inbound\_numbers** `array`

Array of inbound number objects now attached to this persona.

**inbound number object**

**phone\_number** `string`

The E.164 formatted phone number.

**label** `string`

Display label for the number, if set.

**persona\_id** `string`

The persona this number is attached to.

**persona\_settings** `object`

Per-number persona settings (e.g. pathway overrides), if configured.

**created\_at** `string`

ISO 8601 timestamp of when the persona was created.

**updated\_at** `string`

ISO 8601 timestamp of when the persona was last modified.

**errors** `null|array`

`null` on success, or a list of error objects if the request failed.

```json Response (Success) theme={null}
{
  "data": {
    "id": "12345678-1234-1234-1234-123456789012",
    "name": "Support Agent",
    "user_id": "12345678-1234-1234-1234-123456789012",
    "inbound_numbers": [
      {
        "phone_number": "+14155551234",
        "label": "Support Line",
        "persona_id": "12345678-1234-1234-1234-123456789012",
        "persona_settings": null
      },
      {
        "phone_number": "+14155555678",
        "label": null,
        "persona_id": "12345678-1234-1234-1234-123456789012",
        "persona_settings": null
      }
    ],
    "created_at": "2025-09-23T15:13:36.348Z",
    "updated_at": "2025-09-23T15:13:36.412Z"
  },
  "errors": null
}
```

```json Error Response (Number not found) theme={null}
{
  "data": null,
  "errors": [
    {
      "error": "INVALID_INBOUND_NUMBERS",
      "message": "Some phone numbers were not found or do not belong to you"
    }
  ]
}
```

***

Docs for agents: [llms.txt](https://docs.bland.ai/llms.txt)


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