Auto-Comment on Linear Issues via Webhook
When external data arrives via webhook (a form submission, email reply, or tool notification), Notis adds a comment to the matching Linear issue.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Create a comment
Creates a new comment on a specified linear issue.
Why this helps
Feedback arrives through multiple channels (email, forms, notifications) but stays outside Linear. You manually copy information into issue comments.
- All external feedback in Linear comments
- No manual copy-paste between tools
- Full audit trail of feedback in one place
Setup
Build it in a few focused steps.
- 1Connect Canvas and Linear to Notis in your portal integrations.
- 2Tell Notis: 'When you receive a webhook, add a comment to the matching Linear issue with the webhook payload. Include sender, timestamp, and message.' (Or create in portal Automations.)
- 3Select Notis Webhook as the trigger and pick your notification channel.
- 4Notis generates a unique webhook URL. Share it with your feedback sources (email forms, Typeform, etc.).
- 5Test by sending a sample webhook and verifying the comment appears in the Linear issue.
Questions about this workflow
How does Notis know which issue to comment on?
The webhook can include an identifier (issue ID, title, or custom field). Notis matches it to find the right Linear issue. You can specify the matching rule in your prompt.
What if the webhook doesn't include an issue identifier?
Tell Notis 'if no issue is specified, create a new issue and add the comment,' so feedback never gets lost.
Can I format the comment (bold, lists, links)?
Yes. Notis supports markdown formatting, so your webhook comments can include bullet points, links, and emphasis.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Canvas to Linear. A trigger fires from one place; an action lands in another.
Canvas triggers
Linear actions
Canvas Assignment Graded
Polls Canvas for newly graded submissions for a specific assignment.
Create linear attachment
Creates a new attachment and associates it with a specific, existing linear issue.
New Canvas Assignment Submission
Polls Canvas for new submissions to a specific assignment.
Create a comment
Creates a new comment on a specified linear issue.
New Canvas Discussion Message
Polls Canvas discussion topics for new messages.
Create linear issue
Creates a new issue in a specified linear project and team, requiring a title and description, and allowing for optional properties like assignee, state, priority, cycle, and due date.
New Canvas Discussion Topic
Polls a Canvas course for new discussion topics.
Get create issue default params
Fetches a linear team's default issue estimate and state, useful for pre-filling new issue forms.
New Course Created for User
Polls Canvas for newly created courses for a specific user.
Create a label
Creates a new label in linear for a specified team, used to categorize and organize issues.
New Canvas File Upload
Polls a Canvas course for new file uploads.
Delete issue
Archives an existing linear issue by its id, which is linear's standard way of deleting issues; the operation is idempotent.
Get all teams
Retrieves all teams from the linear workspace without requiring any parameters.
Download issue attachments
Downloads a specific attachment from a linear issue; the `file name` must include the correct file extension.
Connect any two apps with Notis in the middle.
Not just Canvas and Linear. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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