Audit page selectors after a Slack review handoff
Confirm the page still exposes the details your next owner needs.
Trigger
Message Reaction Removed
Triggered when a reaction is removed from 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
Handoffs fail when a page changes between review and implementation.
- Checks key page elements at the handoff moment.
- Makes missing content visible immediately.
- Creates a repeatable transition check for teams.
Setup
Build it in a few focused steps.
- 1Connect Slackbot and Cloudflare browser rendering once in Notis.
- 2Create an automation named Reaction removed selector audit.
- 3Tell Notis to scrape the selectors listed in the original message URL and report missing or changed elements.
- 4Pick Message Reaction Removed as the trigger and choose where run reports go.
- 5Test by removing the agreed handoff reaction from one message.
Questions about this workflow
Where are the selectors defined?
Include them in the Slack message or describe a stable team convention in the prompt.
Can it compare with an older result?
Only if you provide a baseline or stored prior result for comparison.
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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