# Batch calls

**Step 1: Prepare your request**

* **Endpoint:** `/call/batch-call`
* **Method:** `POST`
* **URL:** `https://api.talkstackai.com/call/batch-call`
* **Headers:** Include `Content-Type: multipart/form-data`.
* **Authorization:** Bearer token or x-api-key in headers

**Step 2: Create the Request Body**

The request body will be **FormData** with three required keys. These keys are `projectId`, `agentId`, and `file`.

* `projectId`: id of the project for which you want to fetch the call list.
* `agentId`: id of the agent which will make the calls.
* `file`: It should either be an excel sheet or csv file. All the numbers listed in this file will be called using the agent provided.
  * File should have `number` column. It is where the numbers are you want to make calls to must be.
  * You can optionally pass dynamic variables under `dynamicVariables` column