Slack MCP Server

by aaronsbio.github.aaronsb/slack-mcpv2.8.0

Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

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Active2d ago

Install Slack MCP server

claude mcp add slack-aaronsb -- npx -y @aaronsb/slack-mcp

{
  "mcpServers": {
    "slack-aaronsb": {
      "command": "npx",
      "args": [
        "-y",
        "@aaronsb/slack-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "slack-aaronsb": {
      "command": "npx",
      "args": [
        "-y",
        "@aaronsb/slack-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "slack-aaronsb": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@aaronsb/slack-mcp"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "slack-aaronsb": {
      "command": "npx",
      "args": [
        "-y",
        "@aaronsb/slack-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SLACK_MCP_XOXC_TOKEN	—	—	Slack session token. Optional — the auth tool extracts it from your browser and stores it in the config file.
SLACK_MCP_XOXD_TOKEN	—	—	Slack session cookie. Optional — the auth tool extracts it from your browser and stores it in the config file.