Turn a Slack reaction into a targeted page scrape
React once to request structured page details without writing another instruction.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Scrape HTML Elements
Tool to scrape HTML elements for text, HTML, attributes, and box metrics. Use when you need detailed data of matched selectors after rendering a page.
Why this helps
Research requests get lost because nobody knows which links still need detailed extraction.
- Uses an existing reaction as a low effort request signal.
- Extracts text, HTML, attributes, and box metrics from selected elements.
- Creates a repeatable research queue for your team.
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Cloudflare browser rendering once in Notis.
- 2Create an automation named Reaction research scrape.
- 3Tell Notis to find the reacted message URL and scrape the requested selectors, reporting any selector that is missing.
- 4Pick Message Reaction Added as the trigger and choose where run reports go.
- 5Test by adding the chosen reaction to one message with a URL and selector request.
Questions about this workflow
Can the reaction itself identify the selectors?
Only if your team has agreed on a convention. Otherwise include selectors in the message.
What data can the scrape return?
The action can return text, HTML, attributes, and box metrics for matched elements.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slackbot to Cloudflare browser rendering. A trigger fires from one place; an action lands in another.
Slackbot triggers
Cloudflare browser rendering actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Capture Screenshot
Tool to capture a webpage screenshot. Use when you need a visual snapshot of a URL or HTML with optional viewport and clipping.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
List Accounts
Tool to list all Cloudflare accounts accessible. Use to retrieve a valid account_id for further browser rendering actions.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Scrape HTML Elements
Tool to scrape HTML elements for text, HTML, attributes, and box metrics. Use when you need detailed data of matched selectors after rendering a page.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Take Webpage Snapshot
Tool to capture rendered HTML and screenshot of a webpage. Use when you need both DOM content and an image in one request with custom loading and capture settings.
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.
Slackbot and Cloudflare browser rendering, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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