Keep a history when Slack decisions change
Show what shifted and when, so old assumptions do not keep resurfacing.
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.
Action
Update Presentation (Batch/Markdown)
Tool to update existing google slides presentations with either raw api requests or markdown content. **two operation modes:** 1. **raw api mode**: provide direct slides api requests for precise control 2. **markdown mode**: provide markdown text to automatically add professional slides **markdown features:** - professional themes with coordinated colors and backgrounds - dynamic font sizing that prevents overflow (notion-like hierarchy) - smart table auto-sizing with column width optimization - auto-centering and professional positioning - bold formatting, emojis, and multi-line content support - multiple slide types: title, bullet, table, quote, image, two-column **use cases:** - add new slides to existing presentations - update presentation content with markdown - apply professional themes and styling - bulk slide creation with consistent formatting
Why this helps
An outdated decision can keep guiding work after the team has changed course.
- Make decision changes visible over time.
- Preserve the stated reason for a shift.
- Reduce confusion between old and current plans.
Setup
Build it in a few focused steps.
- 1Connect Slack and Google Slides once in the portal.
- 2Create an automation in the portal or ask Notis conversationally.
- 3Write one plain-language instruction to add only explicit reversals or updates to prior decisions to a history deck, using stated context.
- 4Pick the Slack channel message trigger and select the channel for run reports.
- 5Test with a real message that clearly changes a prior decision.
Questions about this workflow
Will it infer that a decision changed?
Ask it to record only messages that explicitly revise, reverse, or replace an earlier decision.
Can it retain the earlier decision?
The instruction can ask Notis to reference the earlier decision when that context is present in the message.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Google Slides. A trigger fires from one place; an action lands in another.
Slack triggers
Google Slides actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Create Slides from Markdown
Creates a new google slides presentation from markdown text. automatically splits content into slides using '---' separators and applies appropriate templates based on content structure.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Update Presentation (Batch/Markdown)
Tool to update existing google slides presentations with either raw api requests or markdown content. **two operation modes:** 1. **raw api mode**: provide direct slides api requests for precise control 2. **markdown mode**: provide markdown text to automatically add professional slides **markdown features:** - professional themes with coordinated colors and backgrounds - dynamic font sizing that prevents overflow (notion-like hierarchy) - smart table auto-sizing with column width optimization - auto-centering and professional positioning - bold formatting, emojis, and multi-line content support - multiple slide types: title, bullet, table, quote, image, two-column **use cases:** - add new slides to existing presentations - update presentation content with markdown - apply professional themes and styling - bulk slide creation with consistent formatting
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Create Google Slides Presentation
Tool to create a blank or duplicate presentation. use when you need to initialize a presentation with a specific title or duplicate an existing one.
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 Presentation
Tool to retrieve the latest version of a presentation. use after obtaining the presentation id.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Get Presentation Page
Tool to get the latest version of a specific page in a presentation. use when you need to inspect slide, layout, master, or notes page details.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get Page Thumbnail
Tool to generate and return a thumbnail image url for a specific page. use when you need a quick preview of a slide page after loading it.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Connect any two apps with Notis in the middle.
Slack and Google Slides, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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