# Done For You — We Build and Run Your Lead Engine with Engine Stack

> Talk with the founder about our Done-For-You service. We set up and run your lead generation engine for you, so you can focus on closing. Here’s how it works: Pick a time that works for you. Fill in the questions to make our call productive On our call, we'll go through your goals and map out exactly what we'll build and run for you.

- Host: Engine Stack
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Bangkok
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/engine-stack/done-for-you
- Event type id: 7802860

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7802860&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 7802860,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "title": "…",
    "business-type": "…"
  }
}
```

- Required fields: `name` (Business Name), `email` (Email), `title` (Are you using any lead generation tools already ?), `business-type` (Which one describe you ?)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.