curl --request PATCH \
  --url https://api.cal.com/v2/webhooks/{webhookId} \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "payloadTemplate": "{\"content\":\"A new event has been scheduled\",\"type\":\"{{type}}\",\"name\":\"{{title}}\",\"organizer\":\"{{organizer.name}}\",\"booker\":\"{{attendees.0.name}}\"}",
  "active": true,
  "subscriberUrl": "<string>",
  "triggers": [
    "BOOKING_CREATED",
    "BOOKING_RESCHEDULED",
    "BOOKING_CANCELLED",
    "BOOKING_CONFIRMED",
    "BOOKING_REJECTED",
    "BOOKING_COMPLETED",
    "BOOKING_NO_SHOW",
    "BOOKING_REOPENED"
  ],
  "secret": "<string>",
  "version": "2021-10-20"
}
'

import requests

url = "https://api.cal.com/v2/webhooks/{webhookId}"

payload = {
    "payloadTemplate": "{\"content\":\"A new event has been scheduled\",\"type\":\"{{type}}\",\"name\":\"{{title}}\",\"organizer\":\"{{organizer.name}}\",\"booker\":\"{{attendees.0.name}}\"}",
    "active": True,
    "subscriberUrl": "<string>",
    "triggers": ["BOOKING_CREATED", "BOOKING_RESCHEDULED", "BOOKING_CANCELLED", "BOOKING_CONFIRMED", "BOOKING_REJECTED", "BOOKING_COMPLETED", "BOOKING_NO_SHOW", "BOOKING_REOPENED"],
    "secret": "<string>",
    "version": "2021-10-20"
}
headers = {
    "Authorization": "<authorization>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: '<authorization>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    payloadTemplate: '{"content":"A new event has been scheduled","type":"{{type}}","name":"{{title}}","organizer":"{{organizer.name}}","booker":"{{attendees.0.name}}"}',
    active: true,
    subscriberUrl: '<string>',
    triggers: [
      'BOOKING_CREATED',
      'BOOKING_RESCHEDULED',
      'BOOKING_CANCELLED',
      'BOOKING_CONFIRMED',
      'BOOKING_REJECTED',
      'BOOKING_COMPLETED',
      'BOOKING_NO_SHOW',
      'BOOKING_REOPENED'
    ],
    secret: '<string>',
    version: '2021-10-20'
  })
};

fetch('https://api.cal.com/v2/webhooks/{webhookId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.cal.com/v2/webhooks/{webhookId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'payloadTemplate' => '{"content":"A new event has been scheduled","type":"{{type}}","name":"{{title}}","organizer":"{{organizer.name}}","booker":"{{attendees.0.name}}"}',
    'active' => true,
    'subscriberUrl' => '<string>',
    'triggers' => [
        'BOOKING_CREATED',
        'BOOKING_RESCHEDULED',
        'BOOKING_CANCELLED',
        'BOOKING_CONFIRMED',
        'BOOKING_REJECTED',
        'BOOKING_COMPLETED',
        'BOOKING_NO_SHOW',
        'BOOKING_REOPENED'
    ],
    'secret' => '<string>',
    'version' => '2021-10-20'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.cal.com/v2/webhooks/{webhookId}"

	payload := strings.NewReader("{\n  \"payloadTemplate\": \"{\\\"content\\\":\\\"A new event has been scheduled\\\",\\\"type\\\":\\\"{{type}}\\\",\\\"name\\\":\\\"{{title}}\\\",\\\"organizer\\\":\\\"{{organizer.name}}\\\",\\\"booker\\\":\\\"{{attendees.0.name}}\\\"}\",\n  \"active\": true,\n  \"subscriberUrl\": \"<string>\",\n  \"triggers\": [\n    \"BOOKING_CREATED\",\n    \"BOOKING_RESCHEDULED\",\n    \"BOOKING_CANCELLED\",\n    \"BOOKING_CONFIRMED\",\n    \"BOOKING_REJECTED\",\n    \"BOOKING_COMPLETED\",\n    \"BOOKING_NO_SHOW\",\n    \"BOOKING_REOPENED\"\n  ],\n  \"secret\": \"<string>\",\n  \"version\": \"2021-10-20\"\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.cal.com/v2/webhooks/{webhookId}")
  .header("Authorization", "<authorization>")
  .header("Content-Type", "application/json")
  .body("{\n  \"payloadTemplate\": \"{\\\"content\\\":\\\"A new event has been scheduled\\\",\\\"type\\\":\\\"{{type}}\\\",\\\"name\\\":\\\"{{title}}\\\",\\\"organizer\\\":\\\"{{organizer.name}}\\\",\\\"booker\\\":\\\"{{attendees.0.name}}\\\"}\",\n  \"active\": true,\n  \"subscriberUrl\": \"<string>\",\n  \"triggers\": [\n    \"BOOKING_CREATED\",\n    \"BOOKING_RESCHEDULED\",\n    \"BOOKING_CANCELLED\",\n    \"BOOKING_CONFIRMED\",\n    \"BOOKING_REJECTED\",\n    \"BOOKING_COMPLETED\",\n    \"BOOKING_NO_SHOW\",\n    \"BOOKING_REOPENED\"\n  ],\n  \"secret\": \"<string>\",\n  \"version\": \"2021-10-20\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cal.com/v2/webhooks/{webhookId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = '<authorization>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"payloadTemplate\": \"{\\\"content\\\":\\\"A new event has been scheduled\\\",\\\"type\\\":\\\"{{type}}\\\",\\\"name\\\":\\\"{{title}}\\\",\\\"organizer\\\":\\\"{{organizer.name}}\\\",\\\"booker\\\":\\\"{{attendees.0.name}}\\\"}\",\n  \"active\": true,\n  \"subscriberUrl\": \"<string>\",\n  \"triggers\": [\n    \"BOOKING_CREATED\",\n    \"BOOKING_RESCHEDULED\",\n    \"BOOKING_CANCELLED\",\n    \"BOOKING_CONFIRMED\",\n    \"BOOKING_REJECTED\",\n    \"BOOKING_COMPLETED\",\n    \"BOOKING_NO_SHOW\",\n    \"BOOKING_REOPENED\"\n  ],\n  \"secret\": \"<string>\",\n  \"version\": \"2021-10-20\"\n}"

response = http.request(request)
puts response.read_body

{
  "status": "success",
  "data": {
    "payloadTemplate": "{\"content\":\"A new event has been scheduled\",\"type\":\"{{type}}\",\"name\":\"{{title}}\",\"organizer\":\"{{organizer.name}}\",\"booker\":\"{{attendees.0.name}}\"}",
    "triggers": [],
    "userId": 123,
    "id": 123,
    "subscriberUrl": "<string>",
    "active": true,
    "secret": "<string>"
  }
}