Centralize Attachments Across Slack and Linear
Files get shared in DMs but forgotten. Notis automatically attaches them to the corresponding Linear issue so documentation lives where decisions happen.
Trigger
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Action
Create linear attachment
Creates a new attachment and associates it with a specific, existing linear issue.
Why this helps
Attachments shared via DM never make it into Linear, forcing neurodivergent founders to search through Slack history when they need files later or to manually upload them.
- Automatically move files from Slack to the right Linear issue
- Keep documentation centralized without manual uploading
- Reduce the cognitive load of tracking files across platforms
- Build a complete record of issue history including attachments
Setup
Build it in a few focused steps.
- 1Connect Slack and Linear to Notis.
- 2Ask Notis: 'When someone sends me a file in a DM along with an issue ID, attach it to that Linear issue' or use the portal.
- 3Provide the prompt: 'When I receive a DM with a file attachment and an issue ID, attach the file to that Linear issue.'
- 4Test by sending Notis a DM with a file and an issue ID, then verify the attachment appears in Linear.
Questions about this workflow
What file types are supported?
Linear accepts most common file types (documents, images, spreadsheets, etc.). Notis will attach anything Linear supports.
What if the issue ID isn't mentioned?
You can configure Notis to ask you which issue to attach the file to, or to save files to a default inbox for manual sorting.
Does this preserve the original filename?
Yes. Notis keeps the filename intact so you can identify files later.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Linear. A trigger fires from one place; an action lands in another.
Slack triggers
Linear actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Create linear attachment
Creates a new attachment and associates it with a specific, existing linear issue.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Create a comment
Creates a new comment on a specified linear issue.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
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.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Get create issue default params
Fetches a linear team's default issue estimate and state, useful for pre-filling new issue forms.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Create a label
Creates a new label in linear for a specified team, used to categorize and organize issues.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Delete issue
Archives an existing linear issue by its id, which is linear's standard way of deleting issues; the operation is idempotent.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Get all teams
Retrieves all teams from the linear workspace without requiring any parameters.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
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.
Slack and Linear, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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