Slack MCP Server

Slack's implementation of the Model Context Protocol — lets AI agents securely discover and use Slack data, tools, and services on your behalf.

Recommended

Cursor

Prerequisites: Cursor 1.4.3+ required. If Salesforce Internal DX extension is enabled, use version 1.5.1+.

Remove any older Slack MCP config from your client.
Click the button below to add the Slack MCP server to Cursor:
Open Cursor and click Install.
Complete auth by clicking Connect inside Cursor.

Alternate manual config

{
    "slack": {
        "url": "https://mcp.slack.com/mcp",
        "auth": {
            "CLIENT_ID": "188160004832.9210129962818"
        }
    }
}

Recommended

Claude Code

Remove any older Slack MCP config from your client.

Run the following command in a new terminal session:

claude mcp add --transport http \
    --client-id 188160004832.9210129962818 \
    --callback-port 3118 \
    slack https://mcp.slack.com/mcp

Inside Claude Code, run /mcp to complete the auth. Choose the TinySpeck workspace in the browser.

Alternate JSON config (add to ~/.claude.json for global access)

{
    "mcpServers": {
        "slack": {
            "type": "http",
            "url": "https://mcp.slack.com/mcp",
            "oauth": {
                "clientId": "188160004832.9210129962818",
                "callbackPort": 3118
            }
        }
    }
}

Add to ~/.claude.json (user-level) for access across all repos. Claude Code deduplicates by server name, so project-level configs take precedence without conflict.

Note: Use the Sonnet or Opus model to correctly use the MCP server tools.

How It Works

Transport: JSON-RPC 2.0 over Streamable HTTP

Auth: OAuth 2.0, scoped to your permissions

Endpoint: https://mcp.slack.com/mcp

Zero-copy: Data stays in Slack, no duplication

View external documentation →

Search messages & files
Send messages & replies
Read channels & threads
Create & update canvases
Search users & channels
Access private channels & DMs

Supported Tools

Search Messages & Files Public and private channels

Search Users By name, email, or user ID

Search Channels Find channels by query

Send Message To channels, DMs, or yourself

Send Message Draft Create a draft for review before sending

Schedule Message Send at a future time

Read Channel Retrieve recent messages

Read Thread Read all replies in a thread

Create Canvas Generate a new Slack canvas

Update Canvas Append, replace, or prepend content

Read Canvas Fetch markdown content

Read User Profile Fetch profile info for any user

Security

All queries run with your own user permissions — no privilege escalation
OAuth 2.0 with no external data storage or caching
You can only access data you already have access to in Slack
Be mindful when connecting multiple MCP servers simultaneously

Alternative: Token-based Setup

If the OAuth flow above doesn't work for your setup, you can install the app to generate an xoxp token and configure your client manually. Note: this method does not support private data access.

(Salesforce grid)

Add to any other Slack team

Manual configuration for other MCP clients

After installing, take the generated config and add it to your MCP client config file:

{
    "mcpServers": {
        "slack": {
            "url": "https://mcp.slack.com/mcp",
            "headers": {
                "Authorization": "Bearer your-xoxp-token"
            }
        }
    }
}