Preview Trigger Outputs Before Building Workflows
Your team debates what data a Stack AI trigger will provide before committing to build a workflow. Stop guessing. This automation fetches the trigger output schema instantly when someone reacts with an emoji, letting the team see exactly what fields are available.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Get Trigger Outputs
Tool to retrieve the output schema for a specific trigger in Stack AI. Use when you need to understand what fields a trigger will produce when it fires. This action helps discover the structure of data that will be available from a trigger event, which is useful for configuring workflows and data processing.
Why this helps
Engineers design workflows without knowing what data a trigger provides, leading to redesigns and wasted planning time when the output doesn't match expectations.
- Make informed decisions about workflow feasibility before building
- Reduce redesign cycles by understanding data availability upfront
- Embed trigger specs in planning conversations to keep context in Slack
Setup
Build it in a few focused steps.
- 1Connect Stack AI and Slack to Notis.
- 2Create an automation with the prompt: 'When someone reacts to a message mentioning a Stack AI trigger with a bookmark emoji, fetch the trigger output schema and reply with a formatted list of all available output fields.'
- 3Set the trigger to 'Message Reaction Added' and pick your lookup emoji (e.g., bookmark).
- 4Choose the Slack channel(s) where trigger lookups happen.
- 5Test by reacting to a message about a Stack AI trigger and verify the output schema appears.
Questions about this workflow
How does Notis know which trigger output to show?
Notis reads the message thread to infer the trigger being discussed. If the team mentions a specific trigger by name (e.g., 'on new email'), Notis fetches that trigger's schema. You can also ask explicitly in the reply.
Can I see data types and field descriptions?
Yes. The output schema includes field names, data types (string, integer, boolean, etc.), and descriptions of what each field represents.
What if the trigger output has many fields?
Notis can format the output as a threaded summary or collapsible list, keeping the main message clean while giving access to full details.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Stack Ai. A trigger fires from one place; an action lands in another.
Slack triggers
Stack Ai actions
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Check Health
Tool to check the health status of the Stack AI API. Use to verify API availability and service status.
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 Action Inputs
Tool to retrieve the input schema for a specific provider action in Stack AI. Use when you need to understand what parameters are required for a provider action.
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 Action Output Schema
Tool to retrieve the output parameters schema for a Stack.ai provider action as JSON schema. Use when you need to understand what data fields an action returns or to validate action outputs.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get Connector Type Schema
Tool to retrieve the configuration schema for a specific connector type in Stack AI. Use when you need to understand what parameters are required to configure a connector.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Get License Status
Tool to retrieve the current Stack AI license status. Use when you need to check license validity, expiration date, or days remaining.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Get Provider Details
Tool to retrieve details of a specific Stack AI tool provider. Use when you need information about available actions, triggers, and configuration for a provider.
Reaction Removed Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.
Get Provider Action Details
Tool to get details of a specific action for a provider. Use when you need information about a provider's action including its parameters, description, and API details.
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.
Get Provider Icon
Tool to fetch a provider icon image by provider identifier. Use when you need to retrieve the icon for a tool provider.
Connect any two apps with Notis in the middle.
Not just Slack and Stack Ai. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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