Cal.com and OpenAPI in OpenAI's GPTs

[TheZapotech]

Hello, I'm integrating my cal.com with ChatGPT. I'm creating various actions in a custom GPTs

The problem is that i cannot find a way to pass the cal-api-version in the header as specified here:
https://cal.com/docs/api-reference/v2/bookings/create-a-booking#create-a-booking

According to official "Action Assistant by OpenAI" the problem is that:
"The error occurs because OpenAI's platform currently only supports parameters in the query string (in: query) or as part of the path (in: path). It does not support parameters in the header. Since your cal-api-version is specified as a header parameter (in: header), the platform ignores it."

Any idea/workaround for this? without that parameter i cannot create bookings.

Thanks
Zap

---

This is the beginning of the schema:

openapi: 3.1.0
info:
title: Cal.com API v2
description: API for managing event types, schedules, bookings, and attendees on Cal.com
version: 2.0.0
servers:

• url: https://api.cal.com/v2
  paths:
  /bookings:
  post:
  summary: Create a new booking
  operationId: createBooking
  parameters:
  - name: cal-api-version
  in: query
  description: Must be set to 2024-08-13
  required: true
  schema:
  type: string
  example: "2024-08-13"
  requestBody:
  description: Details of the booking to create
  required: true
  content:
  application/json:
  schema:
  $ref: '#/components/schemas/BookingRequest'