Fetch a Hacker News discussion from a Slack reaction
Mark a Slack message for follow-up and get the Hacker News item context in the run report.
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 Hackernews Item
Get a specific item from hacker news using its id. limits response size to prevent context overflow.
Why this helps
A story worth investigating gets a quick reaction in chat, then disappears before anyone captures its key context.
- Use a lightweight reaction to signal a follow-up.
- Retrieve a specific item for closer review.
- Keep story context attached to an existing Slack conversation.
Setup
Build it in a few focused steps.
- 1Connect Slack and Hackernews to Notis once through the portal.
- 2Create an automation through the portal or ask Notis to set it up in plain language.
- 3In one instruction, ask Notis to fetch and summarize a Hacker News item when a Slack message with its link or item ID receives your chosen reaction.
- 4Select Message Reaction Added and choose where run reports should appear.
- 5Test by reacting to a Slack message that contains a real Hacker News link.
Questions about this workflow
What should the Slack message contain?
Include a Hacker News link or item ID so Notis can identify which discussion to fetch.
Can the reaction be used as a follow-up signal?
Yes. Describe the reaction and intended behavior in the instruction, then choose Message Reaction Added as the trigger.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Hackernews. A trigger fires from one place; an action lands in another.
Slack triggers
Hackernews actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Get Hackernews Frontpage
Get the frontpage posts of hacker news.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Hackernews Item
Get a specific item from hacker news using its id. limits response size to prevent context overflow.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Get Latest Hackernews Posts
Get the latest posts from hacker news based on optional filters. results can be limited using the size parameter.
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 Hackernews Today Posts
Get today's posts from hacker news.
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 Hackernews User
Get a specific user from hacker news using their username.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Search Hackernews Posts
Get relevant posts from hacker news based on a full-text query and optional filters. results can be limited using the size parameter.
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 Hackernews, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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