Make render approval visible in the Slack thread
When your approval process sends a decision, let Notis add the agreed reaction to the matching Slack message about the render.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Why this helps
Approval decisions can be hard to spot later when they are buried in a busy Slack conversation.
- Make an approval signal visible on the relevant Slack message.
- Avoid manually adding the same reaction after a decision is recorded.
- Use the message timestamp and channel supplied by the approval request.
Setup
Build it in a few focused steps.
- 1Connect Bannerbear and Slack once in Notis.
- 2Create an automation in the portal or tell Notis what outcome you want.
- 3In one instruction, ask Notis to add the agreed reaction to the existing Slack message for an approved render.
- 4Choose the Notis webhook trigger and include the Slack channel, message timestamp, and approval decision in the request.
- 5Choose a report channel and test with one real approval.
Questions about this workflow
Will this approve Bannerbear assets automatically?
No. The webhook must carry an approval decision from your process. The Slack action only adds a reaction to an existing message.
What Slack message details are needed?
The action identifies the existing message by its channel and timestamp. The request should include those details and the reaction to add.
Can it remove an approval reaction if the decision changes?
No. The listed action adds a reaction and does not remove reactions.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Bannerbear to Slack. A trigger fires from one place; an action lands in another.
Bannerbear triggers
Slack actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add a custom emoji to a Slack team
Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.
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Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Add a remote file
Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Add call participants
Registers new participants added to a slack call.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
Add reaction to message
Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.
Connect any two apps with Notis in the middle.
Bannerbear and Slack, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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