Cancel an Outlook meeting and notify attendees
curl --request POST \
--url https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"confirmCancel": true,
"comment": "<string>"
}
'import requests
url = "https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel"
payload = {
"confirmCancel": True,
"comment": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({confirmCancel: true, comment: '<string>'})
};
fetch('https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel', 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.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'confirmCancel' => true,
'comment' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"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.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel"
payload := strings.NewReader("{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.post("https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"ok": true,
"eventId": "<string>",
"status": "accepted"
}{
"error": "unauthorized"
}{
"error": "needs_connection",
"message": "<string>"
}{
"error": "invalid_request",
"message": "<string>"
}{
"error": "microsoft_graph_error",
"message": "<string>",
"outcome": "unknown",
"retryable": false
}Capability Sources
Cancel an Outlook meeting and notify attendees
Requires Calendars.ReadWrite and calendarWrite. Only the meeting organizer can cancel via Graph. Requires explicit user cancellation confirmation; a 202 receipt means cancellation was accepted. Uses only the calling member’s delegated Microsoft 365 connection. Never automatically retry a mutation after a timeout, cancellation, or ambiguous response; inspect current state first.
POST
/
v1
/
capabilities
/
microsoft-365
/
calendar-events
/
{eventId}
/
cancel
Cancel an Outlook meeting and notify attendees
curl --request POST \
--url https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"confirmCancel": true,
"comment": "<string>"
}
'import requests
url = "https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel"
payload = {
"confirmCancel": True,
"comment": "<string>"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({confirmCancel: true, comment: '<string>'})
};
fetch('https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel', 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.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'confirmCancel' => true,
'comment' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"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.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel"
payload := strings.NewReader("{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
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.post("https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.openworklabs.com/v1/capabilities/microsoft-365/calendar-events/{eventId}/cancel")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"confirmCancel\": true,\n \"comment\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"ok": true,
"eventId": "<string>",
"status": "accepted"
}{
"error": "unauthorized"
}{
"error": "needs_connection",
"message": "<string>"
}{
"error": "invalid_request",
"message": "<string>"
}{
"error": "microsoft_graph_error",
"message": "<string>",
"outcome": "unknown",
"retryable": false
}Authorizations
bearerAuthdenApiKey
Session token passed as Authorization: Bearer <session-token> for user-authenticated Den routes.
Path Parameters
Required string length:
1 - 512Body
application/json
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