Route Incoming Webhooks to Slack
External tools send webhooks to Notis, which posts them to Slack. Any event from any system arrives in Slack where your team sees it.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Post message to channel
Deprecated: posts a message to a slack channel, direct message, or private channel. use `send message` instead.
Why this helps
Neurodivergent founders often have tools sending webhooks that get ignored because they don't show up in Slack. Automation brings all external signals into one place.
- External tool events post to Slack automatically
- All incoming signals are visible in one place
- Reduce the number of apps and dashboards you need to monitor
Setup
Build it in a few focused steps.
- 1Connect Slack to Notis.
- 2Tell Notis: 'When I send you a webhook from my external tool, post it to #external-alerts with the data I send.'
- 3Select 'Webhook/External Event' as the trigger.
- 4Note the webhook URL that Notis provides.
- 5Configure your external tool to send webhooks to that URL and verify messages appear in Slack.
Questions about this workflow
Can I format the webhook data before it posts to Slack?
Yes, tell Notis how to structure the Slack message based on the incoming webhook data.
Is the webhook URL secure?
Notis provides a unique URL for each automation, so only your tool can trigger it. You can also rotate or regenerate the URL if needed.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Linear to Slack. A trigger fires from one place; an action lands in another.
Linear triggers
Slack actions
Comment Received Trigger
Triggered when a comment is received.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Issue Created Trigger
Triggered when a new issue is created.
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.
Issue Updated Trigger
Triggered when an issue is updated. For example labels are changed, issue status is changed, etc.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Private Team Comment Created
Fires when a new comment is posted on an issue in a private Linear team (polled with the connected user's token).
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.
Private Team Issue Created
Fires when a new issue appears in a private Linear team (polled with the connected user's token).
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Private Team Issue Properties Updated
Fires when properties on an issue change in a private Linear team (polled with the connected user's token).
Add call participants
Registers new participants added to a slack call.
Project Created
Fires when a new Linear project is created. Covers projects in both public and private teams — polls with the connected user's token, so visibility matches what the connected user can see in Linear.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Project Properties Updated
Fires when properties on a Linear project change (status, lead, target date, priority, etc.). Covers projects in both public and private teams — polls with the connected user's token.
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 Linear and Slack. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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