# 15-min intro call: BuildStack for AFHs with Eric Karani

> A short call for adult foster home and residential care owners in Oregon and Washington. We'll look at your website and how family inquiries reach you today, and whether instant replies would help you book more tours. If it isn't a fit, I'll tell you. - Eric Karani, BuildStack

- Host: Eric Karani
- Duration: 15 min
- Location: Cal Video
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/buildstackapp/15min
- Event type id: 7456585

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=7456585&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": 7456585,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "How-many-homes-do-you-run": "…",
    "attendeePhoneNumber": "…",
    "notes": "…",
    "Your-home-s-website--if-you-have-one": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `How-many-homes-do-you-run` (How many homes do you run?)
- Optional fields: `attendeePhoneNumber` (Phone number), `notes` (Additional notes), `guests` (Add guests), `Your-home-s-website--if-you-have-one` (Your home's website (if you have one))
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.