# Download Cohort File — Amplitude

> Download a completed cohort export's member list (step 3 of 3: request -> status -> download). Call Request Cohort Download then Get Cohort Download Status first, and only call this once status is JOB COMPLETED — calling it earlier will…

- Key: `amplitude-download-cohort-file`
- Type: Action (Read-only)
- Version: 0.0.2
- App: Amplitude (`amplitude`) — https://pipedream.com/apps/amplitude.md
- This page (HTML): https://pipedream.com/apps/amplitude/actions/download-cohort-file
- Hints: read-only · open-world
- Source: https://github.com/PipedreamHQ/pipedream/blob/master/components/amplitude/actions/download-cohort-file/download-cohort-file.mjs

## Description

Download a completed cohort export's member list (step 3 of 3: request -> status -> download). Call **Request Cohort Download** then **Get Cohort Download Status** first, and only call this once status is `JOB COMPLETED` — calling it earlier will fail. Returns one record per member (`amplitude_id`/`user_id`, plus any requested user properties) — not the cohort's own metadata (name, size, definition); use **List Cohorts** for that. Example: call with `requestId="req_456"` -> returns `{requestId: "req_456", memberCount: 4200, returnedCount: 4200, truncated: false, members: [{amplitude_id: "123456789", user_id: "user@example.com"}, ...]}`. [See the documentation](https://amplitude.com/docs/apis/analytics/behavioral-cohorts#download-cohort).

## Props

| Prop | Type | Required | Description |
|---|---|---|---|
| `requestId` | `string` | Yes | The request_id returned by Request Cohort Download, after Get Cohort Download Status reports JOB COMPLETED. Example: req_456. |
| `maxMembers` | `integer` | No | Maximum number of member records to return. Defaults to 10000. The true total is always reported in memberCount, with truncated: true if it exceeds this cap. |

## 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": "amplitude",
      },
    },
  },
)

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: "amplitude-download-cohort-file",
  arguments: {
    requestId: "Request ID",
    maxMembers: 10,
  },
})
```

**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: "amplitude-download-cohort-file",
  externalUserId: "{external_user_id}", // any stable ID for this user in your system
  configuredProps: {
    amplitude: { authProvisionId: "apn_xxxxxxx" },
    requestId: "Request ID",
    maxMembers: 10,
  },
})

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": "amplitude-download-cohort-file",
    "configured_props": {
      "amplitude": { "authProvisionId": "apn_xxxxxxx" },
      "requestId": "Request ID",
      "maxMembers": 10
    }
  }'
```

---

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