Search for Slack channels via external webhook
Your toolchain extends beyond Google Docs and Slack. External systems—custom scripts, third-party apps, internal services—need to find the right Slack channel. This automation lets a webhook query Slack for channels by criteria, enabling seamless tool integration.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Find channels
Find channels in a slack workspace by any criteria - name, topic, purpose, or description.
Why this helps
External tools don't know which Slack channel to use. You manually look up channels or hardcode them. Tool integration becomes brittle and context-dependent.
- External tools can find Slack channels dynamically
- No hardcoding channels—search by criteria
- Enables sophisticated tool orchestration
- Reduces manual coordination between systems
Setup
Build it in a few focused steps.
- 1Connect Slack to your Notis portal.
- 2Create a new Automation: 'When a webhook is received from [external tool], search Slack for channels matching [criteria] and return the results.'
- 3Select 'notis_webhook' to get your webhook URL.
- 4Configure your external tool to send data to Notis, specifying what channels to search for.
- 5Test by triggering your external tool and confirming Slack channels are found and returned.
Questions about this workflow
How do I specify search criteria in the webhook?
Send the channel criteria in your webhook payload—e.g., 'find channels with "project" in the name' or 'find the #marketing channel.' Notis will search accordingly.
Can I return the channel ID and link?
Yes. Notis returns the full channel object including ID, name, topic, and link, so your external tool can use it.
What if no channels match?
Notis returns an empty result, or you can configure it to create a channel automatically if none exist.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Docs to Slack. A trigger fires from one place; an action lands in another.
Google Docs triggers
Slack actions
New Document Created
Triggers when a new Google Doc is created. This trigger monitors Google Docs and fires when new documents are detected. Uses timestamp filtering to efficiently poll for new documents.
Set snooze duration
Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.
Document Deleted
Triggers when an existing Google Doc is deleted (moved to trash). This trigger monitors Google Docs and fires when documents are trashed.
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.
Document Placeholder Filled
Triggers when a Google Doc's plain text changes such that a configured placeholder token/pattern is no longer present (i.e., the document has been filled in). This trigger monitors a specific Google Doc and fires when a placeholder pattern that was previously present is no longer found in the document's plain text.
Add an emoji alias
Adds an alias for an existing custom emoji in a slack enterprise grid organization.
Document Search Update
Triggers when a Google Doc matching a user-defined search query is newly created or updated since the last poll. This trigger uses timestamp filtering to efficiently monitor documents.
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.
Document Structure Changed
Triggers when a Google Doc's structure changes (headers/footers added/removed, tables/images count changes). This trigger monitors a specific document for structural changes like: - Headers added or removed - Footers added or removed - Tables added or removed - Images (inline objects) added or removed - Positioned objects added or removed - Footnotes added or removed
Add a star to an item
Stars a channel, file, file comment, or a specific message in slack.
Document Updated
Triggers when an existing Google Doc is updated or modified. This trigger monitors Google Docs and fires when documents are updated.
Add call participants
Registers new participants added to a slack call.
Document Word Count Threshold
Triggers when a Google Doc's word/character count crosses a user-defined threshold. This trigger monitors a specific Google Doc and fires when its word or character count becomes greater than or equal to the configured threshold value.
Add emoji
Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.
New Folder Created in Root
Triggers when a new folder is created in the root folder of Google Drive. This trigger monitors Google Drive and fires when new folders are detected in the root directory.
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.
Not just Google Docs and Slack. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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