# Set a variable for a workspace

> Add or change a variable's row, as for secrets.

<div class="g1t-endpoint"><span class="g1t-method" data-method="post">POST</span><code>/workspaces/{workspace}/actions/variables</code></div>

- **Authentication:** Required. Send an [access token](/reference/api/#authentication) as `Authorization: Bearer`.
- **MCP tool:** [`secret`](/reference/mcp/#secret) with `action` `set_variable`, and the same inputs
- **Scope:** An access token needs [`secrets:admin`](/guides/authentication/#scopes).
- **Also at:** [`POST /repos/{owner}/{name}/actions/variables`](/reference/api/secrets-and-variables/set-actions-variable/), [`PATCH /repos/{owner}/{name}/actions/variables/{setting}`](/reference/api/secrets-and-variables/update-actions-variable/), [`PATCH /workspaces/{workspace}/actions/variables/{setting}`](/reference/api/secrets-and-variables/update-actions-variable-for-workspace/)

## Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `workspace` | string | Yes | Instead of repo: the workspace, for the ones every repository in it reads. |

## Body parameters

Send a JSON object. Names are `snake_case`, as in responses; the `camelCase` spelling is accepted too.

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `setting` | string | Yes | The key, such as NPM_TOKEN. |
| `value` | string | No | Needed for a new row; left out, the row keeps its value. |
| `id` | string | No | The row to change, from a list. Left out: the key's row for every environment. |
| `available_to` | array of strings | No | Who reads it. Both for a new row. One of `workflows`, `deployments`. |
| `environments` | array of strings | No | The environments it applies to, such as production and preview, or a workflow job's environment. Empty is every environment. |
| `projects` | array of strings | No | A workspace's row: the projects it reaches, by slug. Empty is every one. |
| `note` | string | No | Where to rotate it, or who to ask. |

## Example request

```sh
curl -X POST https://api.g1t.sh/workspaces/flagon-io/actions/variables \
  -H "Authorization: Bearer $G1T_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "setting": "NODE_VERSION",
    "value": "20"
  }'
```

## Example response

A successful request answers `200` with:

```json
{
  "id": "set_01kpv9q4r7s0t3v6w9x2y5z8ad",
  "name": "NODE_VERSION",
  "kind": "variable",
  "value": "20",
  "scope": "workspace",
  "updated_at": "2026-10-04T15:42:07.318Z",
  "available_to": [
    "workflows",
    "deployments"
  ],
  "environments": [],
  "projects": [],
  "note": null,
  "updated_by": "syntaqx"
}
```

## 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. |
| 409 | `conflict` | The request conflicts with the current state. |
| 422 | `invalid` | The input is not valid. `message` says which field and why. |