Keep a marked commitment from slipping away
When a reaction draws attention to a message, create a grounded reminder of what was actually promised.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Create Message
Tool to create a new message completion. use when you need to generate assistant text given a conversation history.
Why this helps
A commitment may receive a reaction but still get lost among later conversations and tasks.
- Extracts a commitment only when the message states one.
- Keeps dates and owners tied to the original wording.
- Creates a short follow-up cue without assigning a task.
Setup
Build it in a few focused steps.
- 1Connect Slack and Anthropic administrator once in the portal.
- 2Create an automation and name it for marked commitments.
- 3Write one prompt asking Anthropic to summarize any explicit commitment in the reacted-to message and include only stated owners and timing.
- 4Choose Message Reaction Added, select where Notis reports runs, and test with a real reaction on a commitment.
Questions about this workflow
Does a reaction itself create a commitment?
No. The message must state a commitment; the reaction is only the trigger cue.
Can this create a task?
No. The action generates a text summary, not a task record.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Anthropic administrator. A trigger fires from one place; an action lands in another.
Slack triggers
Anthropic administrator actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Create Message
Tool to create a new message completion. use when you need to generate assistant text given a conversation history.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Model
Tool to retrieve details of a specific model by its id. use after confirming the model id is valid.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
List models
Tool to list available models. use when you need to see which models are available before selection.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Prompt Caching
Tool to cache and reuse prompt content to reduce costs and latency. use after you have static prompt portions you intend to reuse across calls.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
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 Anthropic administrator, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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