# Discovery Call with Tech Potions

> Twenty minutes to work out what you need and whether we're the right people to build it. Bring whatever you have: an idea, a half-built product, a process that's eating your week. We'll tell you what we'd do, roughly what it costs, and honestly whether it's worth building at all. No deck, no discovery theatre. If we're not a fit we'll say so on the call and point you somewhere better.

- Host: Tech Potions
- Duration: 30 min
- Location: Google Meet
- Host time zone: Asia/Karachi
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/techpotions/discovery
- Event type id: 6517036

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6517036&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": 6517036,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "What-are-you-working-on": "…",
    "Where-did-you-hear-about-us": "…",
    "attendeePhoneNumber": "…",
    "Company-or-Website": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `What-are-you-working-on` (What are you working on?), `Where-did-you-hear-about-us` (Where did you hear about us?)
- Optional fields: `attendeePhoneNumber` (Phone number), `Company-or-Website` (Company or Website), `guests` (Add guests)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.