Slack connector

Authentication

Auth type: Bot token (OAuth 2.0)

Create a Slack app at api.slack.com/apps. Add bot token scopes: chat:write, chat:write.public, im:write, channels:join, channels:manage, channels:read, reactions:write, files:write. Install the app to your workspace and copy the Bot User OAuth Token (xoxb-...).

Credential	Description
Bot Token	Slack bot OAuth token starting with `xoxb-`

Triggers

Trigger	When it fires
Message Posted	A new message is posted in a monitored channel
Direct Message Received	A user sends a DM to the bot
Reaction Added	A reaction emoji is added to any message
App Mention	A user mentions the bot with `@botname`

Triggers require configuring Slack Event Subscriptions in your app settings, pointing to your Collabase webhook endpoint.

Actions

Messages

Action	Key inputs	Key outputs
Send Message	`channel`, `text`, `username`, `iconEmoji`, `blocks`	ok, ts, channel
Send Direct Message	`userId`, `text`	ok, ts
Update Message	`channel`, `ts` (message timestamp), `text`	ok, ts
Delete Message	`channel`, `ts`	ok

Reactions & files

Action	Key inputs	Key outputs
Add Reaction	`channel`, `ts`, `emoji` (without `:`)	ok
Upload File	`channels`, `fileUrl`, `filename`, `title`, `initialComment`	fileId, permalink

Channel management

Action	Key inputs	Key outputs
Create Channel	`name`, `isPrivate`	id, name
Invite User to Channel	`channel`, `userId`	ok
Get Channel Info	`channel`	id, name, topic, memberCount
List Members	`channel`	members[], count

Use the channel’s ID (e.g. C012AB3CD), not its display name, for reliable delivery. Right-click the channel in Slack → Copy link — the last URL segment is the ID.

Core concepts

Apps

Authentication

Triggers

Actions

​Authentication

​Triggers

​Actions

Authentication

Triggers

Actions