Slack User MCP

Name: Slack User MCP
Author: lars-hagen

lars-hagen

Acts in a Slack workspace as the authorized user: list channels, post and reply in threads, add reactions and look up users.

Setup

Choose your client, copy the config, then fill in any required environment variables.

Add to Cursor Add to VS Code

claude mcp add slack-user --env SLACK_TEAM_ID='<SLACK_TEAM_ID>' --env SLACK_TOKEN='<SLACK_TOKEN>' -- npx -y @modelcontextprotocol/server-slack-user

~/.codex/config.toml

[mcp_servers.slack-user]
command = "npx"
args = ["-y", "@modelcontextprotocol/server-slack-user"]
env = { SLACK_TEAM_ID = "<SLACK_TEAM_ID>", SLACK_TOKEN = "<SLACK_TOKEN>" }

# codex mcp add slack-user --env SLACK_TEAM_ID='<SLACK_TEAM_ID>' --env SLACK_TOKEN='<SLACK_TOKEN>' -- npx -y @modelcontextprotocol/server-slack-user

~/.cursor/mcp.json

{
  "mcpServers": {
    "slack-user": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-slack-user"
      ],
      "env": {
        "SLACK_TEAM_ID": "<SLACK_TEAM_ID>",
        "SLACK_TOKEN": "<SLACK_TOKEN>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "slack-user": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-slack-user"
      ],
      "env": {
        "SLACK_TEAM_ID": "<SLACK_TEAM_ID>",
        "SLACK_TOKEN": "<SLACK_TOKEN>"
      }
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "slack-user": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-slack-user"
      ],
      "env": {
        "SLACK_TEAM_ID": "<SLACK_TEAM_ID>",
        "SLACK_TOKEN": "<SLACK_TOKEN>"
      }
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "slack-user": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-slack-user"
      ],
      "env": {
        "SLACK_TEAM_ID": "<SLACK_TEAM_ID>",
        "SLACK_TOKEN": "<SLACK_TOKEN>"
      }
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "slack-user": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-slack-user"
      ],
      "env": {
        "SLACK_TEAM_ID": "<SLACK_TEAM_ID>",
        "SLACK_TOKEN": "<SLACK_TOKEN>"
      }
    }
  }
}

Environment variables

SLACK_TEAM_ID
SLACK_TOKEN

Replace the placeholders with your own credentials and keep them out of version control.

Setup

Environment variables

Related