iMessage MCP vs Slack MCP Server (korotovsky)

A side-by-side comparison of two Communication servers — tools, transport, auth, maintenance, and copy-paste config for each.

	iMessage MCP Read-only MCP server for searching and reading your macOS iMessage history and Contacts. Unverified stdio (local) No auth TypeScript	Slack MCP Server (korotovsky) Powerful Slack MCP with stdio/SSE/HTTP, DMs, group DMs and no-admin token auth Verified stdio (local) API key Go
Category	Communication	Communication
Language	TypeScript	Go
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	28	1.7k
Last commit	3 months ago	1 month ago
Verified
Actively maintained
Install	`deno install --global --allow-read --allow-env --allow-sys --allow-ffi -n imessage-mcp jsr:@wyattjoh/imessage-mcp`	`npx -y slack-mcp-server@latest --transport stdio`
Repo	Open	Open

Verdict

Pick iMessage MCP if you want zero-setup with no API key.

Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Add iMessage MCP

Install / run

deno install --global --allow-read --allow-env --allow-sys --allow-ffi -n imessage-mcp jsr:@wyattjoh/imessage-mcp

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "imessage-mcp": {
      "command": "deno",
      "args": [
        "run",
        "--allow-read",
        "--allow-env",
        "--allow-sys",
        "--allow-ffi",
        "jsr:@wyattjoh/imessage-mcp"
      ]
    }
  }
}

Add Slack MCP Server (korotovsky)

Install / run

npx -y slack-mcp-server@latest --transport stdio

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "slack-mcp-server-korotovsky": {
      "command": "npx",
      "args": [
        "-y",
        "slack-mcp-server@latest",
        "--transport",
        "stdio"
      ],
      "env": {
        "SLACK_MCP_XOXP_TOKEN": "<your-slack-user-oauth-token-xoxp>"
      }
    }
  }
}

FAQ

iMessage MCP or Slack MCP Server (korotovsky) — which is better?

Pick iMessage MCP if you want zero-setup with no API key. Pick Slack MCP Server (korotovsky) if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Can I use both iMessage MCP and Slack MCP Server (korotovsky)?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do iMessage MCP and Slack MCP Server (korotovsky) work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View iMessage MCP →View Slack MCP Server (korotovsky) →More comparisons →