# List runner groups

> A workspace's runner groups: which of its repositories may use the runners in each.

<div class="g1t-endpoint"><span class="g1t-method" data-method="get">GET</span><code>/workspaces/{workspace}/actions/runner-groups</code></div>

The default group (every repository) is where runners go when no group is named. Owners only.

- **Authentication:** Required. Send an [access token](/reference/api/#authentication) as `Authorization: Bearer`.
- **MCP tool:** [`workflow`](/reference/mcp/#workflow) with `action` `list_runner_groups`, and the same inputs
- **Scope:** An access token needs [`runners:read`](/guides/authentication/#scopes).

## Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `workspace` | string | Yes | The workspace's slug, e.g. "flagon-io". |

## Example request

```sh
curl https://api.g1t.sh/workspaces/flagon-io/actions/runner-groups \
  -H "Authorization: Bearer $G1T_TOKEN"
```

## Example response

A successful request answers `200` with:

```json
[
  {
    "id": "rng_01kq2m7r2a5d8g1j4m7p0s3v6y",
    "name": "Default",
    "default": true,
    "repositories": [],
    "runners": 2,
    "updated_at": "2026-10-02T09:30:00.000Z"
  },
  {
    "id": "rng_01kq2m7r2a5d8g1j4m7p0s3v6z",
    "name": "GPU",
    "default": false,
    "repositories": [
      "hello",
      "models"
    ],
    "runners": 1,
    "updated_at": "2026-10-05T11:20:00.000Z"
  }
]
```

## Errors

A failed request answers with one of these statuses and a body like `{"error": {"code": "not_found", "message": "Repository not found."}}`. See [errors](/reference/api/#errors).

| Status | Code | When |
| --- | --- | --- |
| 401 | `unauthenticated` | A token is required, or the one sent is not valid. |
| 403 | `forbidden` | The token is valid but not allowed to do this, such as a member-only change or an agent token outside its repository. |
| 404 | `not_found` | It does not exist, or you cannot see it. |
| 422 | `invalid` | The input is not valid. `message` says which field and why. |