Auto-Attach Files From Slack to Asana Tasks

Someone shares a design, document, or screenshot in Slack. Notis automatically attaches it to the related Asana task. All artifacts stay in one place.

Trigger

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

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Action

Create Attachment for Task

Tool to upload an attachment to a task. use when you need to attach a file to a specific task in asana.

Why this helps

Critical files get shared in Slack conversations but are never attached to the actual task in Asana, forcing people to search through Slack history to find them.

  • All task-related files stay in Asana, not scattered in Slack
  • No more searching Slack history for attachments
  • Complete artifact history visible in one place
  • Reduces context-switching to find supporting documents

Setup

Build it in a few focused steps.

  • 1Connect Slack and Asana to Notis.
  • 2Tell Notis: 'When a file is shared in Slack that relates to a task, automatically attach it to that task in Asana.'
  • 3Optionally define which messages to watch: 'Only in channels with project names' or 'Only if someone mentions a task name.'
  • 4Select your notification channel.
  • 5Share a file in Slack and verify it appears as an attachment on the related Asana task.

Questions about this workflow

How does Notis know which task to attach the file to?

You can tell it: 'Look for the task name in the message' or 'Ask me via emoji reaction to confirm which task.' You control the matching logic.

What file types are supported?

Asana supports most file types. Notis will attach whatever Slack attachments are linked.

What if the same file is shared multiple times?

Notis is smart about duplicates. She won't attach the same file twice to the same task.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Slack to Asana. A trigger fires from one place; an action lands in another.

Slack logo

Slack triggers

Asana logo

Asana actions

New Channel Created Trigger

Triggered when a new channel is created in Slack.

TriggerInstant

Add Followers to Task

Tool to add followers to a task in asana. use this tool when you need to add one or more users as followers to a specific task. this will notify them of updates to the task.

ActionInstant

Channel Message Received

Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.

TriggerInstant

Add Supporting Relationship to Goal

Tool to add a supporting goal relationship to a goal. use when you want to link a project, task, portfolio, or another goal as a supporting resource to a specific goal in asana.

ActionInstant

Direct Message Received

Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.

TriggerInstant

Add task to section

Adds an existing task to a section, optionally positioning it before or after another task in that section; if no position is specified, the task is added to the end.

ActionInstant

Message Reaction Added

Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Create Allocation

Creates a new allocation. use when you need to schedule or assign a specific amount of a user's time per week to a task or project within a defined period.

ActionInstant

Message Reaction Removed

Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.

TriggerInstant

Create a project

Creates a new asana project, requiring either a `workspace` or `team` gid for association, and returns the full project details.

ActionInstant

Reaction Added Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.

TriggerInstant

Create a tag in a workspace

Creates a new tag, with properties like name and color defined in the request body, within a specific asana workspace (using `workspace gid`); this tag helps categorize tasks, is confined to the workspace, and is not automatically applied to tasks.

ActionInstant

Reaction Removed Trigger

DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.

TriggerInstant

Create task in asana with specific details

Creates a new asana task; requires 'workspace', 'parent', or 'projects' for association, and 'followers', 'projects', 'tags' are set only at creation.

ActionInstant

New Bot Message Received Trigger

DEPRECATED: use `SLACK_CHANNEL_MESSAGE_RECEIVED` with `is_bot_message=true` instead. Triggered when a new bot message is posted to a Slack channel.

TriggerInstant

Create Attachment for Task

Tool to upload an attachment to a task. use when you need to attach a file to a specific task in asana.

ActionInstant

Connect any two apps with Notis in the middle.

Not just Slack and Asana. Any combination from 985+ integrations.

When this happens · Trigger

Do this · Action

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