MCP-NixOS vs Serena

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

	MCP-NixOS Real-time NixOS, Home Manager, nix-darwin, and Nixvim data so your AI stops hallucinating package and option names. Unverified stdio (local) No auth Python	Serena LSP-powered coding agent toolkit: semantic symbol search, references and structural edits. Verified stdio (local) No auth Python
Category	Developer Tools	Developer Tools
Language	Python	Python
Transport	stdio (local)	stdio (local)
Auth	None	None
GitHub stars	705	12k
Last commit	2 days ago	15 days ago
Verified
Actively maintained
Install	`uvx mcp-nixos`	`uvx --from git+https://github.com/oraios/serena serena start-mcp-server`
Repo	Open	Open

Verdict

Pick MCP-NixOS if you prefer its approach (real-time nixos, home manager, nix-darwin, and nixvim data so your ai stops hallucinating package and option names).

Pick Serena if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Add MCP-NixOS

Install / run

uvx mcp-nixos

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

{
  "mcpServers": {
    "mcp-nixos": {
      "command": "uvx",
      "args": [
        "mcp-nixos"
      ]
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

Add Serena

Install / run

uvx --from git+https://github.com/oraios/serena serena start-mcp-server

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

{
  "mcpServers": {
    "serena": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/oraios/serena",
        "serena",
        "start-mcp-server"
      ]
    }
  }
}

Requires `uv` (the Python package runner). Install it from https://docs.astral.sh/uv/ if `uvx` is not found.

FAQ

MCP-NixOS or Serena — which is better?

Pick MCP-NixOS if you prefer its approach (real-time nixos, home manager, nix-darwin, and nixvim data so your ai stops hallucinating package and option names). Pick Serena if you prefer the more popular, battle-tested option, and you need the broadest set of tools.

Can I use both MCP-NixOS and Serena?

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 MCP-NixOS and Serena work with Claude, Cursor and Windsurf?

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

View MCP-NixOS →View Serena →More comparisons →