> ## 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.

# Get Agent Number Binding

> Check whether phone numbers have been attached to an agent.

### Overview

Returns the agent's inbound number binding. `persona_id` is `null` until the first successful [Attach Numbers to Agent](/api-v2/post/agents-id-inbound-attach) call. This endpoint does not list the numbers themselves; use [List Numbers](/api-v1/get/inbound) for that. An unknown agent ID returns `persona_id: null` rather than `404`.

### Headers

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

### Path Parameters

<ParamField path="agent_id" type="string" required>
  The agent's unique identifier.
</ParamField>

### Response

<ResponseField name="data.agent_id" type="string">
  The agent ID from the request path, echoed back.
</ResponseField>

<ResponseField name="data.persona_id" type="string | null">
  ID of the persona that attached numbers route through. Bland creates it on the first attach and keeps it afterwards, so it stays set even after every number is detached. `null` if numbers have never been attached to this agent.
</ResponseField>

<ResponseField name="errors" type="null | array">
  `null` on success, or a list of error objects if the request failed.
</ResponseField>

<ResponseExample>
  ```json Response theme={null}
  {
    "data": {
      "agent_id": "680817f5-147a-4e7f-9d25-eac973e693a5",
      "persona_id": "a308a95d-854d-435a-ae2a-b3d113b59054"
    },
    "errors": null
  }
  ```

  ```json No Binding theme={null}
  {
    "data": {
      "agent_id": "818cab80-86c9-46fc-93d8-a7f548b18d7e",
      "persona_id": null
    },
    "errors": null
  }
  ```
</ResponseExample>

***

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