On-Demand Reminders: Create Tasks via Webhook
Sometimes you need a reminder from outside Slack or Google Slides—maybe from a calendar event, project board, or external script. Notis webhooks let you create reminders on-demand, giving you full control over when and what you're reminded to do.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Create a reminder
Creates a slack reminder with specified text and time; time accepts unix timestamps, seconds from now, or natural language (e.g., 'in 15 minutes', 'every thursday at 2pm').
Why this helps
Reminders live in Slack or Google Slides but you need to trigger them from other tools, requiring manual copying.
- Reminders can be triggered from any tool via webhook
- Integrate presentation workflows with external systems
- Full control over reminder timing and content
Setup
Build it in a few focused steps.
- 1Connect Slack to Notis.
- 2Create an automation named 'Create custom reminders'.
- 3Enter: 'When a webhook is triggered with presentation name and due date, create a Slack reminder for that date.'
- 4Save and copy your webhook URL.
- 5Call the webhook from any tool (Zapier, custom script, etc.) to create reminders on-demand.
Questions about this workflow
What data do I pass to the webhook?
In your automation, specify what you expect—presentation name, due date, reminder text—and Notis will parse it from the webhook.
Can I use this with external tools like Zapier?
Yes. Pass your Notis webhook URL to Zapier or any other integration platform and trigger reminders from anywhere.
Can I customize the reminder message?
Yes. Include the message in your webhook data and Notis will use it—or specify a template in your automation.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Slides to Slack. A trigger fires from one place; an action lands in another.
Google Slides triggers
Slack actions
New Slide Added
Fires when a new slide is added to a Google Slides presentation.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
Not just Google Slides and Slack. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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