# Meet with Ever.green with Ever.green

> Meet with Ever.green's product leads about Ever.green's REC Management platform and services.

- Host: Ever.green
- Duration: 15, 30, 45, 60 min
- Location: Zoom Video, Google Meet
- Host time zone: America/Los_Angeles
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/evergreen/product
- Event type id: 6735438

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=6735438&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": 6735438,
  "start": "<UTC ISO 8601 start from the slots response>",
  "lengthInMinutes": 60,
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "guests": [
    "guest@example.com"
  ],
  "bookingFieldsResponses": {
    "company": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `company` (Company name), `email` (Email address)
- Optional fields: `guests` (Add guests), `notes` (Additional notes)
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.
- `location` is optional; without it the booking uses the event’s first location.
- `lengthInMinutes` picks one of 15, 30, 45, 60; pass the same value to the slots request as `duration`.