Create Slack reminders from external webhooks
Your project management tool flags a deadline, or your analytics system detects an anomaly. A webhook hits Notis, which instantly creates a Slack reminder so you can act on it immediately without context-switching.
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
Important signals from external tools get lost; switching between platforms to check them breaks focus and causes dropped follow-ups.
- Convert external signals into Slack-based reminders automatically
- Reduce context-switching between tools
- Keep critical information accessible in Slack
- Build a unified notification system across your toolchain
Setup
Build it in a few focused steps.
- 1Connect Slack to Notis
- 2Create a new automation with the prompt: 'When an external system sends a webhook about an urgent item, create a Slack reminder for me'
- 3Choose the trigger: Notis Webhook
- 4Notis provides the webhook URL to configure in your external tool
- 5Test by triggering a webhook from your external tool and verify the Slack reminder appears
Questions about this workflow
What information can I pass from the webhook to the reminder?
Your prompt extracts it: 'use the deadline from the webhook' or 'include the priority level in the reminder text'.
Can I route webhooks to different Slack channels?
Yes. Your prompt can set logic: 'if high priority, remind the CEO; if low priority, remind the team'.
How do I get the webhook URL to my external tool?
Notis provides it during setup; you paste it into your external system's webhook configuration.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Discord to Slack. A trigger fires from one place; an action lands in another.
Discord triggers
Slack actions
New Discord Message Trigger
Polls a specific Discord channel for new messages.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
New Member Joined
Triggered when a new member joins a Discord server (guild) you manage.
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.
Message Reaction Added
Triggered when a reaction (emoji) is added to a message in a monitored Discord channel.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
New Thread Created
Triggered when a new thread is created in a Discord channel within a monitored server.
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.
Message Edited
Triggered when an existing message in a monitored Discord channel is edited.
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 Discord and Slack. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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