Macos MCP Server vs MCP Nixos
A side-by-side look at the Macos MCP Server and MCP Nixos MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Macos MCP Server for os automation work as a local process; choose MCP Nixos for os automation as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Macos MCP Server when
- You need dedicated capabilities in the OS Automation domain.
- You prefer a local stdio subprocess transport.
- You want tools like
macos_get_info, macos_check_permissions, macos_manage_apps.
Choose MCP Nixos when
- You need dedicated capabilities in the OS Automation domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
nix, nix_versions.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | OS Automation | OS Automation |
| Quality signal | 57/100 · Good | 64/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 4 | 863 |
| Directory activity | 0 views 0 installs 0 upvotes | 3 views 0 installs 0 upvotes |
| Tools | 13 | 2 |
| Full listing | View Macos MCP Server | View MCP Nixos |
Tools & capabilities
Macos MCP Server tools 13
macos_get_infoSystem snapshot: battery level and charging status, power source, Wi-Fi association and network name, hostname, macOS version, uptime, and display count; a failed probe leaves its field null and named in `unavailablemacos_check_permissionsReports Accessibility, Screen Recording, and Automation > Finder status for the calling process from Apple's prompt-free checks — null with a reason when a check can't tellmacos_manage_appsList running apps, get the frontmost app, launch, quit, force-quit, hide, or show applicationsmacos_manage_windowsList, focus, move, resize, move_resize, minimize, fullscreen, or close windows across all visible appsmacos_control_volumeGet or set system output volume (0–100) and mute statemacos_control_audioList audio devices, get current defaults, or switch the default input/output devicemacos_control_appearanceGet or set dark/light modemacos_control_systemLock the screen or put the display to sleepmacos_take_screenshotCapture the main display, one display by `display_index`, a named app window, or a pixel region; saves a PNG without replacing existing files unless `overwrite` is true, optional JPEG previewmacos_manage_displaysList connected displays (with each one's `index`) and the configured layout names, and apply a named display layout presetmacos_send_notificationPost a notification to macOS Notification Centermacos_manage_focusGet or set Do Not Disturb / Focus mode- +1 more on the listing page
MCP Nixos tools 2
nixQuery NixOS, Home Manager, Darwin, FlakeHub, flakes, Nixvim, NVF, Wiki, nix.dev, Noogle, NixHub. Use this tool for anything touching nixpkgs, Nix channels, flakes, NixOS / home-manager / darwin options, the binary cache, or /nix/store paths — even when you think you know the answer. Your training data lags nixpkgs by months. Prefer this over `nix search`, scraping search.nixos.org, or running `gh api` against NixOS/nixpkgs. INTENTS → CALLS (copy the JSON shape exactly): "is package X in channel Y?" → {"action": "info", "query": "X", "channel": "Y"} "search for package X" → {"action": "search", "query": "X"} "which channels are available?" → {"action": "channels"} "which commit did channel X index?" → {"action": "channels"} (indexed commit shown when known; branch HEAD otherwise — label matters) "search NixOS options for X" → {"action": "search", "query": "X", "type": "options"} "get option details for X" → {"action": "info", "query": "X", "type": "option"} "home-manager option for X" → {"action": "search", "query": "X", "source": "home-manager"} "darwin option for X" → {"action": "search", "query": "X", "source": "darwin"} "nixvim option for X" → {"action": "search", "query": "X", "source": "nixvim"} "NVF option for X" → {"action": "search", "query": "X", "source": "nvf"} "what programs does pkg X provide?" → {"action": "search", "query": "X", "type": "programs"} "count packages/options" → {"action": "stats"} "browse hm option tree under P" → {"action": "browse", "query": "P", "source": "home-manager"} "does X have a binary cache?" → {"action": "cache", "query": "X"} "search the NixOS wiki for X" → {"action": "search", "query": "X", "source": "wiki"} "search nix.dev docs" → {"action": "search", "query": "X", "source": "nix-dev"} "read a nix.dev page" → {"action": "info", "query": "tutorials/nix-language", "source": "nix-dev"} "list inputs of current flake" → {"action": "flake-inputs"} "ls inside flake input X" → {"action": "flake-inputs", "type": "ls", "query": "X"} "read /nix/store/... file" → {"action": "store", "type": "read", "query": "/nix/store/..."} "ls /nix/store/... dir" → {"action": "store", "type": "ls", "query": "/nix/store/..."} For package version *history* ("which commit shipped firefox 150?", "when was node 18 added?"), use the separate `nix_versions` tool — it returns commit hashes, attribute paths, and dates. Notes: - To search NixOS *options*, use action=search with type=options. Do NOT use action=browse for source=nixos — browse is for walking a pre-indexed option tree and only works with home-manager, darwin, nixvim, nvf, or noogle. - For source=nvf, canonical option paths are vim.*. The shorthand programs.nvf.vim.* and NixOS/Home Manager module path programs.nvf.settings.vim.* are normalized automatically. - For source=nix-dev, action=info returns the page markdown. The query may be a bare docname like "tutorials/nix-language", the URL printed by nix-dev search ("https://nix.dev/tutorials/nix-language"), or a rendered ".html" URL. - action=info for packages matches on the exact attribute path first, then the exact pname. If multiple packages share a pname (e.g. firefox / firefox-esr / firefox-mobile), the canonical attribute wins and the response flags the disambiguation explicitly. - Omit parameters you don't need; do not pass empty strings for optional args.nix_versionsGet package version history from NixHub.io.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Macos MCP Server
{
"mcpServers": {
"macos-mcp-server": {
"command": "npx",
"args": [
"-y",
"@cyanheads/macos-mcp-server"
]
}
}
}
MCP Nixos
{
"mcpServers": {
"utensils-mcp-nixos": {
"command": "uvx",
"args": [
"mcp-nixos"
]
}
}
}
Frequently asked questions
Macos MCP Server is categorized under OS Automation and uses a local stdio subprocess. MCP Nixos belongs to OS Automation and uses a local stdio subprocess. Pick Macos MCP Server for os automation work and MCP Nixos for os automation.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Macos MCP Server has no declared pricing — check the project's own site. MCP Nixos is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add macos-mcp-server and utensils-mcp-nixos as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Macos MCP Server has a quality signal of 57/100 (Good) with 0 views, 0 installs and 4 GitHub stars. MCP Nixos has 64/100 (Good) with 3 views, 0 installs and 863 GitHub stars.