# Create Feature Flag — Eppo

> Create a new feature flag in Eppo with a unique key, display name, entity ID, variations, and optional tags. Use this when the user wants to add a new feature flag. The key must be a unique URL-safe slug (e.g. my-new-feature). Duplicate…

- Key: `eppo-create-feature-flag`
- Type: Action (Write)
- Version: 0.0.2
- App: Eppo (`eppo`) — https://pipedream.com/apps/eppo.md
- This page (HTML): https://pipedream.com/apps/eppo/actions/create-feature-flag
- Hints: open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/eppo/actions/create-feature-flag/create-feature-flag.mjs

## Description

Create a new feature flag in Eppo with a unique key, display name, entity ID, variations, and optional tags. Use this when the user wants to add a new feature flag. The `key` must be a unique URL-safe slug (e.g. `my-new-feature`). Duplicate keys are rejected by the API. IMPORTANT: Each variation requires `variant_key` (unique slug) and `type` (must be `STRING`, `INTEGER`, or `JSON` — uppercase). Do NOT use `key` or `value` fields. Example: `[{"variant_key": "on", "type": "STRING", "name": "On"}, {"variant_key": "off", "type": "STRING", "name": "Off"}]`. Use **List Feature Flags** to verify the flag was created. [See the documentation](https://eppo.cloud/api/docs#/FeatureFlags/createFeatureFlag)

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `key` | `string` | Yes | A unique URL-safe slug for the flag (e.g. my-new-feature). Must be unique across all flags. |
| `name` | `string` | Yes | A human-readable display name for the flag. |
| `variations` | `string` | Yes | JSON array of variation objects. Each requires variant_key (unique slug) and type (uppercase: STRING, INTEGER, or JSON). Do NOT use key or value fields — use variant_key and type. Optionally include name. Example: [{"variant_key": "on", "type": "STRING", "name": "On"}, {"variant_key": "off", "type": "STRING", "name": "Off"}]. |
| `entityId` | `integer` | Yes | The numeric entity type ID this metric measures (e.g. user, session). Use List Metrics to find the entity_id from any existing metric — all metrics in the same workspace typically share the same entity ID. |
| `tagNames` | `string[]` | Yes | The names of the tags to add to the flag. Example: ["growth", "checkout"]. |

## Run it

**MCP**

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "eppo",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// listTools() hands your model this tool's input schema, so it can
// fill the arguments itself:
const result = await mcp.callTool({
  name: "eppo-create-feature-flag",
  arguments: {
    key: "Key",
    name: "Name",
  },
})
```

**TypeScript**

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const result = await pd.actions.run({
  id: "eppo-create-feature-flag",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    eppo: { authProvisionId: "apn_xxxxxxx" },
    key: "Key",
    name: "Name",
  },
})

console.log(result)
```

**cURL**

```bash
curl -X POST https://api.pipedream.com/v1/connect/{project_id}/actions/run \
  -H "Content-Type: application/json" \
  -H "X-PD-Environment: production" \
  -H "Authorization: Bearer {access_token}" \
  -d '{
    "external_user_id": "{external_user_id}",
    "id": "eppo-create-feature-flag",
    "configured_props": {
      "eppo": { "authProvisionId": "apn_xxxxxxx" },
      "key": "Key",
      "name": "Name"
    }
  }'
```

---

- App: https://pipedream.com/apps/eppo.md · All apps: https://pipedream.com/apps