**Version: 202601**

# Revert AI card operation

**POST** `/openapi/2026-01/themes/edit-sessions/:oseid/gen-blocks/revert`

Restore the card to its state before the operation identified by `revert_id` (returned by any create, update, delete, or revert). Reverting also returns a new `revert_id`, so you can undo and redo repeatedly.

## Request

**Path Parameters**

- `oseid` string (required)

  Edit session ID

**application/json**

**Body | Example**

**Body (required)**

- `revert_id` string (required)

  32-character token taken from any write response (create / update / delete / revert itself); pass it back as-is. The same id may be used repeatedly

```json
{
  "revert_id": "string"
}
```

## Responses

**200**

OK

**application/json**

**Schema | Example**

**Schema**

- `code` string

  error code
- `message` string

  error message
- `data` object

  - `revert_id` string

    A new revert token, used to revert this revert

```json
{
  "code": "string",
  "message": "string",
  "data": {
    "revert_id": "string"
  }
}
```