Slack
Send messages to Slack channels and DM users from any automation. React to messages, manage channels, upload files, and handle app mentions — all via the Slack Web API.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
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
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
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 |