> ## 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.

# Roll Back Agent

> Repoint production at a previously deployed version.

### Overview

Moves the agent's `production` pointer back to a version that has been deployed to production before, recording a new deployment with that version's original semver. Phone numbers attached to the agent begin answering with the restored version. Find candidates with [List Agent Deployments](/api-v2/get/agents-id-deployments), where `is_rollback_eligible` is `true`. `staging` is not changed.

Requires an admin, owner, operator, or prompter role.

### 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>

### Body Parameters

<ParamField body="version_id" type="string" required>
  ID of the version to restore. It must belong to this agent, have at least one production deployment on record, and not be the current production pin. Missing or empty returns `400 BAD_REQUEST`. A version never deployed to production, or one that is already live, also returns `400 BAD_REQUEST` with a message explaining which. An ID that is not one of this agent's versions returns `404 NOT_FOUND`.
</ParamField>

### Response

<ResponseField name="data.semver" type="string">
  The restored version's number, for example `1.3.1`.
</ResponseField>

<ResponseField name="data.environments" type="array">
  The agent's three environments after the rollback. Each has `id`, `env_type` (`dev`, `staging`, or `production`), and `current_version_id` (the pinned version, or `null` if unpinned).
</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": {
      "semver": "1.3.1",
      "environments": [
        {
          "id": "3b4442ac-eaff-4a8d-bd9b-103affc43fc4",
          "env_type": "dev",
          "current_version_id": null
        },
        {
          "id": "6e92b74f-071f-4a09-85a5-5a3e6625ddf5",
          "env_type": "staging",
          "current_version_id": "4671db05-2d34-4171-9626-79a468e73f61"
        },
        {
          "id": "2c0ff980-fedf-4ebc-9117-dd21702d6e27",
          "env_type": "production",
          "current_version_id": "e6926b11-5513-4187-9dcf-5800b899f8da"
        }
      ]
    },
    "errors": null
  }
  ```

  ```json Never Deployed theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "BAD_REQUEST",
        "message": "Cannot roll back to a version that was never deployed to production"
      }
    ]
  }
  ```

  ```json Already Current theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "BAD_REQUEST",
        "message": "Production is already pinned to this version"
      }
    ]
  }
  ```

  ```json Version Not Found theme={null}
  {
    "data": null,
    "errors": [
      {
        "error": "NOT_FOUND",
        "message": "Version not found on this agent"
      }
    ]
  }
  ```
</ResponseExample>

***

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