Super-charge your Slack workspace with AI-powered automations. Read and post messages, manage channels, handle files, and keep teams in sync - all by writing plain-language prompts instead of code.
Instantly tap into every channel, DM, file, and user across your Slack workspace and automate tasks in real time.

​
What is Slack MCP?

Slack MCP creates a custom node that understands the Slack API for you. Just describe what you want in natural language, and the node handles the request - no webhooks or coding required.

​
What Can It Do for You?

  • Post announcements, reminders, or rich canvases to any channel or user
  • Read recent messages or full threads for monitoring, reporting, or sentiment analysis
  • Manage channels and membership: create, archive, invite, remove, or list users
  • Work with files and reactions: upload attachments, pin important posts, or add emoji reactions automatically

​
Available Tools

ToolWhat It DoesExample Use
Read MessagesRead messages from a Slack channel”Read the last 20 messages in #support and return text, user, and timestamp”
Send MessageSend a message to a Slack channel or user”Post ‘Daily stand-up starts in 10 minutes’ to #engineering”
Create CanvasCreate a Slack canvas message with rich content”Create a canvas in #product-updates titled ‘Q2 Roadmap’ with content ‘[canvas_content]‘“
Add User To ChannelAdd a user to a Slack channel”Add john.smith@company.com to #marketing”
Upload FileUpload a file to Slack”Upload the file at https://example.com/report.pdf to #reports with the caption ‘April Sales Report‘“
React To MessageAdd a reaction to a message”Add :thumbsup: to the latest message from sarah.jones in #general”
Delete MessageDelete a Slack message”Delete my last message in #random”
Get Message ThreadRetrieve a message and its replies”Get the full thread for the message ‘Bug report: login issue’ in #support and return text and user for each reply”
Pin MessagePin a message in a channel or DM”Pin the message containing ‘Important: All hands meeting’ in #announcements”
Unpin MessageUnpin a message”Unpin the oldest pinned message in #design-reviews”
Get User PresenceCheck a user’s online status”Is mike.chen@company.com currently active? return presence”
Search UsersSearch for users across the workspace”Search users where email contains ‘@acme.com’ and return id, real_name, and email”
Remove From ChannelRemove a user from a channel”Remove contractor@external.com from #internal-only”
Get File InfoGet metadata for a specific file”Get info for PDF files uploaded to #legal-docs in the last 7 days”
List Pinned ItemsList pinned items in a channel or DM”List pinned items in #leadership and return type, title, and creator”
Create ChannelCreate a new public or private channel”Create a private channel named ‘project-phoenix-2024‘“
Delete ChannelDelete a Slack channel”Archive channel #q1-campaign-completed”
Update Channel TopicUpdate a channel’s topic”Set topic of #sales to ‘Q3 OKRs: 5Mtarget−current:5M target - current: 3.2M‘“
Update Channel PurposeUpdate a channel’s purpose”Update purpose of #customer-wins to ‘Share customer success stories and testimonials‘“
Archive ChannelArchive a Slack channel”Archive #project-sunset-2023”
Unarchive ChannelUnarchive a Slack channel”Unarchive #seasonal-campaigns”
List Users In ChannelList all users in a channel”List users in #product-launch and return id and real_name”

​
How to Use

1

Create Your Slack MCP Node

Go to your node library, search for Slack, and click “Create a node with AI”
2

Add Your Prompt

Drag the Slack MCP node onto the canvas and enter a clear, specific prompt that uses one tool.
3

Test Your Node

Run the node to view results. Adjust the prompt or output fields until it returns exactly what you need.
4

Save and Reuse

Save the finalized Slack MCP node to your library so you can drop it into any future workflow.

​
Example Prompts

With 24 available tools, these examples showcase common use cases. Feel free to experiment with natural language to discover more possibilities. Post an Announcement 
Send a message to #company-news provided the message input
Retrieve Support Thread 
Get message threads in the last 3 days in #support
and return user, text, and ts
Search Workspace Users 
Search for a user given an `email address`
and return id, email, and real_name
Upload a File 
Upload file from https://example.com/invoice.pdf to #finance
with filename "Invoice-0425.pdf" and title "April Invoice"
Add Teammate to Channel 
Add user `email address` to #product-launch
List Channel Members 
List users in #marketing-team and return id, email address and real_name
Start with a single action like “Send a message” or “List users in channel” to verify your Slack MCP node, then chain multiple nodes for multi-step workflows.

​
Troubleshooting

If your Slack MCP node isn’t working as expected, try these best practices:

​
Keep Prompts Simple and Specific

  • Good: “Send a message to #sales-announcements saying ‘Quarterly numbers are in!’”
  • Less Efficient: “Read the last 50 messages from #marketing, summarize them, then post the summary to #executive-updates and email it to me”
While the longer prompt might work, it’s more efficient to break it into separate nodes. Slack MCP works best with focused, single-action prompts.

​
Match What Slack Can Do

  • Good: “List users in channel #product-launch and return user IDs and real names”
  • Less Efficient: “List users from my HubSpot CRM and add them to #partners channel”
Slack MCP excels at Slack workspace operations. For CRM data, combine it with HubSpot or another appropriate node in your workflow.

​
Break Complex Tasks Into Steps

Instead of trying to do everything in one prompt (which might cause timeouts or complexity): 
Find all users in #engineering inactive for 30 days,
send them a DM reminder, add them to #on-hold, and export a CSV
Break this into smaller, focused nodes that each handle one task:
1

Step 1: List Users

List users in #engineering and return id and last_active
2

Step 2: Send Reminders

Send a DM to each user ID saying “Please update your status”
3

Step 3: Update Membership

Add each user ID to #on-hold
In your workflow, connect these nodes sequentially. The user IDs output from Step 1 become the input for Step 2, and the same IDs feed into Step 3.

​
Focus on Data Retrieval

Slack MCP is great at getting information from Slack. For analysis or content creation, connect it to other nodes. Example:
  • Good prompt: “Get message thread from user email address in #support and return text and thread_id”
  • Less Efficient: “Get the thread, summarize it, and create a PDF report”
Use Slack MCP to fetch the thread, then pass its output to Ask AI for summarization and Google Sheets Writer for report creation.

​
Troubleshooting Node Creation

​
Need More Help?