Slack MCP Server

Name: Slack MCP Server
Author: korotovsky

korotovsky

Get started Repository

Slack workspace MCP server supporting channels, DMs, group DMs and history fetch, over Stdio and SSE transports.

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 --env SLACK_MCP_XOXC_TOKEN='<SLACK_MCP_XOXC_TOKEN>' --env SLACK_MCP_XOXD_TOKEN='<SLACK_MCP_XOXD_TOKEN>' --env SLACK_MCP_SSE_API_KEY='<SLACK_MCP_SSE_API_KEY>' -- npx -y slack-mcp-server@latest --transport stdio

~/.codex/config.toml

[mcp_servers.slack]
command = "npx"
args = ["-y", "slack-mcp-server@latest", "--transport", "stdio"]
env = { SLACK_MCP_XOXC_TOKEN = "<SLACK_MCP_XOXC_TOKEN>", SLACK_MCP_XOXD_TOKEN = "<SLACK_MCP_XOXD_TOKEN>", SLACK_MCP_SSE_API_KEY = "<SLACK_MCP_SSE_API_KEY>" }

# codex mcp add slack --env SLACK_MCP_XOXC_TOKEN='<SLACK_MCP_XOXC_TOKEN>' --env SLACK_MCP_XOXD_TOKEN='<SLACK_MCP_XOXD_TOKEN>' --env SLACK_MCP_SSE_API_KEY='<SLACK_MCP_SSE_API_KEY>' -- npx -y slack-mcp-server@latest --transport stdio

~/.cursor/mcp.json

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXC_TOKEN": "<SLACK_MCP_XOXC_TOKEN>",
        "SLACK_MCP_XOXD_TOKEN": "<SLACK_MCP_XOXD_TOKEN>",
        "SLACK_MCP_SSE_API_KEY": "<SLACK_MCP_SSE_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "slack": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXC_TOKEN": "<SLACK_MCP_XOXC_TOKEN>",
        "SLACK_MCP_XOXD_TOKEN": "<SLACK_MCP_XOXD_TOKEN>",
        "SLACK_MCP_SSE_API_KEY": "<SLACK_MCP_SSE_API_KEY>"
      }
    }
  }
}

~/.gemini/settings.json

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXC_TOKEN": "<SLACK_MCP_XOXC_TOKEN>",
        "SLACK_MCP_XOXD_TOKEN": "<SLACK_MCP_XOXD_TOKEN>",
        "SLACK_MCP_SSE_API_KEY": "<SLACK_MCP_SSE_API_KEY>"
      }
    }
  }
}

claude_desktop_config.json

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXC_TOKEN": "<SLACK_MCP_XOXC_TOKEN>",
        "SLACK_MCP_XOXD_TOKEN": "<SLACK_MCP_XOXD_TOKEN>",
        "SLACK_MCP_SSE_API_KEY": "<SLACK_MCP_SSE_API_KEY>"
      }
    }
  }
}

.trae/mcp.json

{
  "mcpServers": {
    "slack": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXC_TOKEN": "<SLACK_MCP_XOXC_TOKEN>",
        "SLACK_MCP_XOXD_TOKEN": "<SLACK_MCP_XOXD_TOKEN>",
        "SLACK_MCP_SSE_API_KEY": "<SLACK_MCP_SSE_API_KEY>"
      }
    }
  }
}

Environment variables

SLACK_MCP_XOXC_TOKEN
SLACK_MCP_XOXD_TOKEN
SLACK_MCP_SSE_API_KEY

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

Setup

Environment variables

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