Update one or more fields of an existing calendar event on the…

curl -X POST 'https://app.castomapi.com/v1/google/calendar/events/update' \
  -H 'x-api-key: <your-api-key>' \
  -H 'Content-Type: application/json' \
  -d '{"accountId": "acc_434118", "attendees": [{"displayName": "Ada Lovelace", "email": "ada@example.com", "optional": false}], "calendarId": "primary", "description": "Generated from the endpoint's own schema.", "end": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "eventId": "eve_857162", "location": "<location>", "sendUpdates": "none", "start": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "summary": "A short summary."}'

const res = await fetch('https://app.castomapi.com/v1/google/calendar/events/update', {
  method: 'POST',
  headers: { 'x-api-key': '<your-api-key>', 'Content-Type': 'application/json' },
  body: JSON.stringify({"accountId": "acc_434118", "attendees": [{"displayName": "Ada Lovelace", "email": "ada@example.com", "optional": false}], "calendarId": "primary", "description": "Generated from the endpoint's own schema.", "end": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "eventId": "eve_857162", "location": "<location>", "sendUpdates": "none", "start": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "summary": "A short summary."})
});
const data = await res.json();
console.log(data);

import { request } from 'node:https';

// Node 18+ has fetch built in
const res = await fetch('https://app.castomapi.com/v1/google/calendar/events/update', {
  method: 'POST',
  headers: { 'x-api-key': '<your-api-key>', 'Content-Type': 'application/json' },
  body: JSON.stringify({"accountId": "acc_434118", "attendees": [{"displayName": "Ada Lovelace", "email": "ada@example.com", "optional": false}], "calendarId": "primary", "description": "Generated from the endpoint's own schema.", "end": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "eventId": "eve_857162", "location": "<location>", "sendUpdates": "none", "start": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "summary": "A short summary."})
});
const data = await res.json();
console.log(data);

import requests

res = requests.post(
    'https://app.castomapi.com/v1/google/calendar/events/update',
    headers={'x-api-key': '<your-api-key>'},
    json={"accountId": "acc_434118", "attendees": [{"displayName": "Ada Lovelace", "email": "ada@example.com", "optional": False}], "calendarId": "primary", "description": "Generated from the endpoint's own schema.", "end": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "eventId": "eve_857162", "location": "<location>", "sendUpdates": "none", "start": {"date": "2026-09-08", "dateTime": "2026-09-08T10:00:00Z", "timeZone": "Europe/Warsaw"}, "summary": "A short summary."},
    timeout=30,
)
print(res.json())

<?php
$ch = curl_init('https://app.castomapi.com/v1/google/calendar/events/update');
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['x-api-key: <your-api-key>', 'Content-Type: application/json'],
    CURLOPT_POSTFIELDS => json_encode(['accountId' => 'acc_434118', 'attendees' => [['displayName' => 'Ada Lovelace', 'email' => 'ada@example.com', 'optional' => false]], 'calendarId' => 'primary', 'description' => 'Generated from the endpoint\'s own schema.', 'end' => ['date' => '2026-09-08', 'dateTime' => '2026-09-08T10:00:00Z', 'timeZone' => 'Europe/Warsaw'], 'eventId' => 'eve_857162', 'location' => '<location>', 'sendUpdates' => 'none', 'start' => ['date' => '2026-09-08', 'dateTime' => '2026-09-08T10:00:00Z', 'timeZone' => 'Europe/Warsaw'], 'summary' => 'A short summary.']),
]);
$data = json_decode(curl_exec($ch), true);
print_r($data);