Check Cal availability from WhatsApp scheduling messages
A customer asks when you are free. Let Notis check calendar availability in Cal, then review the result before replying with a time.
Trigger
New Message Received
Triggered in real time when your WhatsApp Business number receives an inbound message from a customer (text, media, location, or contact). Delivered via the Cloud API webhook.
Action
Check calendar availability
Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.
Why this helps
Manually checking calendars while handling WhatsApp messages adds friction and increases the chance of suggesting a time that is already taken.
- Get a current free-busy view for scheduling questions.
- Spend less time moving between chat and calendar screens.
- Keep the final time suggestion under your control.
Setup
Build it in a few focused steps.
- 1Connect WhatsApp and Cal once in the Notis portal.
- 2Create an automation in Automations, New Automation, or ask Notis from any channel.
- 3Describe the outcome: when a WhatsApp message asks about meeting times, check availability on the relevant Cal calendar.
- 4Pick New Message Received as the trigger and choose a report channel.
- 5Test with one real scheduling request and confirm the availability result is useful.
Questions about this workflow
Will this book a meeting automatically?
No. This workflow checks free-busy availability only. It does not create a booking.
Does the availability check expose event details?
The listed Cal action retrieves free-busy availability without revealing event details. Data granularity can vary.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Whatsapp to Cal. A trigger fires from one place; an action lands in another.
Whatsapp triggers
Cal actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add member to team
Adds a new member to a specified team within an organization by creating a team membership.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add organization attribute option
Adds a new option to an organization's attribute, requiring a display `value` and a `slug` unique for that attribute.
Message Status Updated
Triggers when a WhatsApp message status changes. IMPORTANT LIMITATION: WhatsApp Cloud API does not provide a native polling endpoint for message status. Status updates are ONLY delivered via webhooks in real-time. This trigger cannot directly poll the WhatsApp API for status updates. This trigger will return empty results as WhatsApp does not support this operation. To track message status updates, you must: 1. Set up a webhook endpoint to receive status notifications from WhatsApp 2. Store the webhook data in your own database 3. Use a different mechanism to query your stored webhook data For more information, see: - https://developers.facebook.com/docs/whatsapp/cloud-api/webhooks
Delete oauth client webhook
Permanently deletes a specific webhook subscription of an oauth client in the cal application, stopping its notifications.
New Message Received
Triggered in real time when your WhatsApp Business number receives an inbound message from a customer (text, media, location, or contact). Delivered via the Cloud API webhook.
Cancel booking via uid
Cancels an existing and active cal.com booking using its unique identifier (uid).
Interactive Reply Received
Triggered when a customer taps a quick-reply button or selects an option from an interactive list message you sent.
Check calendar availability
Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.
Message Template Status Update
Triggered when the review status of a WhatsApp message template changes — for example approved, rejected, or flagged — on your WhatsApp Business Account.
Check gcal synchronization status
Call this read-only action to verify the connection and synchronization status of a user's google calendar integration with cal.
Check ics feed calendar endpoint
Checks an ics feed url (expected as a query parameter) to verify its validity, accessibility, and icalendar data integrity.
Check Stripe status
Verifies if stripe is correctly connected to the cal scheduling system and functional for processing payments, reporting only on the integration's status.
Connect any two apps with Notis in the middle.
Whatsapp and Cal, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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