---
title: 'POST /flags/{projectKey}'
description: 'Create a feature flag'
---

# POST /flags/{projectKey}

Create a feature flag

| Detail | Value |
|---|---|
| Operation ID | `devtools.createFlag` |
| Method | `POST` |
| Path | `/flags/{projectKey}` |
| Connector | [LaunchDarkly](./) |

## Parameters

| Name | Location | Type | Required |
|---|---|---|---|
| `projectKey` | path | string | **Yes** |

## Request Body

| Field | Type |
|---|---|
| `name` | string |
| `key` | string |
| `variations` | array |


## Using this endpoint in a workflow

1. Add an **API Call** node to your workflow.
2. Pick your LaunchDarkly connection from the Connection dropdown.
3. In the Operation dropdown, select `devtools.createFlag`.
4. Fill in the parameter fields that appear. Use `{{...}}` to reference upstream values.

**Required fields are marked — fill them or the call will fail at runtime.**

## What it returns

The `API Call` node writes the response to the workflow context:

```
{
  status: 200,
  success: true,
  data: { ...response body from the API... },
  latencyMs: 142
}
```

Reference response fields downstream as <code v-pre>{{nodeId.data.path}}</code>. The exact response shape is documented on the upstream LaunchDarkly API reference.