# Roll back to a version

Brings the configuration back to a saved version (the current state is saved as a version first).

|  |  |
| --- | --- |
| REST | `POST /api/v1/agents/{agent_id}/versions/{version}/restore` |
| MCP tool | `restore_version` |
| Classification | **Sensitive write** |
| Scope | `agents:publish` |
| Minimum role on the agent | admin |
| Confirmation | Required: `confirm: true`, after the person agrees |
| Retry safety | Safe to retry with the same input |
| Success status | 200 |

## What it does

Brings the configuration back to a saved version (the current state is saved as a version first). Changes what live visitors see, so it needs the agents:publish scope and confirm: true. Check diff_versions first.

## Side effects

Saves the current state as a version, then brings back the chosen one. Visitors of a published agent see it at once.

## Inputs

| Name | Type | Required | In | Description |
| --- | --- | --- | --- | --- |
| `agent_id` | string | yes | path | The agent id (agt_...), from list_agents. |
| `version` | integer | yes | path |  |
| `confirm` | true | no | body | Set to true after reviewing the effect with the person you work for. Required for destructive operations. |

## Example

REST:

```bash
curl -X POST "https://covo.lanaai.io/api/v1/agents/agt_4edc89bb2964/versions/3/restore" \
  -H "Authorization: Bearer $COVO_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"confirm":true}'
```

MCP (POST /mcp):

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "restore_version",
    "arguments": {
      "agent_id": "agt_4edc89bb2964",
      "version": 3,
      "confirm": true
    }
  }
}
```

## Response

Returns an object with `restored`, `version`, `revision`, `changes` and `backup_version`. This is a real response, shortened to two items per list.

200 response:

```json
{
  "restored": false,
  "version": 3,
  "revision": 7,
  "changes": [],
  "backup_version": null
}
```

Over MCP the same object comes back as the tool result, in `structuredContent` and as JSON text.

## Errors

| Status | Code | Meaning |
| --- | --- | --- |
| 401 | `unauthorized` | No token, or it is unknown, revoked or expired. OAuth apps refresh or reconnect. |
| 403 | `account_suspended` | The account that owns the token is paused. |
| 403 | `insufficient_scope` | The token lacks `agents:publish`. |
| 403 | `role_insufficient` | The person is not an admin or owner of this agent. |
| 404 | `agent_not_found` | Unknown agent, or not reachable with this token. |
| 400 | `bad_request` | An input is invalid; `field` names it. |
| 409 | `confirmation_required` | Review the effect with the person you work for, then send `confirm: true`. |
| 429 | `rate_limited` | Wait `Retry-After` seconds. |