Content
# mcp-servers-nix
A Nix-based configuration framework for Model Control Protocol (MCP) servers with ready-to-use packages.
## Overview
This repository provides both MCP server packages and a Nix framework for configuring and deploying MCP servers. It offers a modular approach to configuring various MCP servers with a consistent interface.
## Features
- **Modular Configuration**: Define and combine multiple MCP server configurations
- **Reproducible Builds**: Leverage Nix for reproducible and declarative server setups
- **Pre-configured Modules**: Ready-to-use configurations for popular MCP server types
- **Security-focused**: Better handling credentials and sensitive information through `envFile` and `passwordCommand`, with pinned server versions
- **Framework Support**: Integrates with [Flakes](docs/module-usage.md#using-flakes), [flake-parts](docs/module-usage.md#using-flake-parts), [devenv](docs/module-usage.md#using-devenv), and [Home Manager](docs/module-usage.md#using-home-manager)
## Quick Start
Run an MCP server directly:
```bash
nix run github:natsukium/mcp-servers-nix#mcp-server-fetch
```
Generate a configuration file with `mkConfig`:
```nix
# config.nix
let
pkgs = import <nixpkgs> { };
mcp-servers-nix = import (fetchTarball
"https://github.com/natsukium/mcp-servers-nix/archive/main.tar.gz") { inherit pkgs; };
in
mcp-servers-nix.lib.mkConfig pkgs {
programs.filesystem = {
enable = true;
args = [ "/path/to/allowed/directory" ];
};
}
```
```bash
nix-build config.nix && cat result
```
```json
{
"mcpServers": {
"filesystem": {
"command": "/nix/store/7b4ancp3cns9lkkybd090qzr0hah5qq0-mcp-server-filesystem-2025.12.18/bin/mcp-server-filesystem",
"args": [ "/path/to/allowed/directory" ]
}
}
}
```
The output format adapts to the `flavor` option — see [Supported Flavors](#supported-flavors) below.
## Supported Flavors
| Flavor | Key | Typical File | Client |
|--------|-----|-------------|--------|
| `claude` | `mcpServers` | `claude_desktop_config.json` | Claude Desktop |
| `claude-code` | `mcpServers` | `.mcp.json` | Claude Code |
| `vscode` | `mcp.servers` | `settings.json` | VS Code |
| `vscode-workspace` | `servers` | `.vscode/mcp.json` | VS Code (workspace) |
| `codex` | `mcp_servers` | `.mcp.toml` | Codex CLI |
| `opencode` | `mcp` | `opencode.json` | OpenCode |
| `zed` | `context_servers` | (varies) | Zed |
## Available Modules
- [clickup](./modules/servers/clickup.nix)
- [codex](./modules/servers/codex.nix)
- [context7](./modules/servers/context7.nix)
- [deepl](./modules/servers/deepl.nix)
- [esa](./modules/servers/esa.nix)
- [everything](./modules/servers/everything.nix)
- [fetch](./modules/servers/fetch.nix)
- [filesystem](./modules/servers/filesystem.nix)
- [freee](./modules/servers/freee.nix)
- [git](./modules/servers/git.nix)
- [github](./modules/servers/github.nix)
- [grafana](./modules/servers/grafana.nix)
- [home-assistant](./modules/servers/home-assistant.nix)
- [mastra](./modules/servers/mastra.nix)
- [memory](./modules/servers/memory.nix)
- [netdata](./modules/servers/netdata.nix)
- [nixos](./modules/servers/nixos.nix)
- [notion](./modules/servers/notion.nix)
- [playwright](./modules/servers/playwright.nix)
- [sequential-thinking](./modules/servers/sequential-thinking.nix)
- [serena](./modules/servers/serena.nix)
- [slite](./modules/servers/slite.nix)
- [tavily](./modules/servers/tavily.nix)
- [terraform](./modules/servers/terraform.nix)
- [textlint](./modules/servers/textlint.nix)
- [time](./modules/servers/time.nix)
## Examples
Check the `examples` directory for complete configuration examples:
- [`claude-desktop.nix`](./examples/claude-desktop.nix): Basic configuration for Claude Desktop
- [`vscode.nix`](./examples/vscode.nix): VS Code integration setup
- [`librechat.nix`](./examples/librechat.nix): Configuration for LibreChat integration
- [`codex.nix`](./examples/codex.nix): Codex CLI integration with MCP servers
- [`opencode.nix`](./examples/opencode.nix): OpenCode CLI integration with MCP servers
- [`vscode-workspace`](./examples/vscode-workspace/flake.nix): VS Code workspace configuration example
- [`flake-parts-module`](./examples/flake-parts-module/flake.nix): Flake-parts module integration with multi-flavor support
- [`devenv`](./examples/devenv): devenv integration using `claude.code.mcpServers`
- [`home-manager`](./examples/home-manager/flake.nix): Home Manager integration with `programs.mcp.servers`
### Real World Examples
Check out [GitHub search results](https://github.com/search?q=lang%3Anix+mcp-servers-nix&type=code) for examples of how others are using mcp-servers-nix in their projects.
## Documentation
- [Module Usage Guide](docs/module-usage.md) — How to configure MCP servers with Nix (classic, npins, flakes, flake-parts)
- [Configuration Reference](docs/configuration-reference.md) — Security, credential handling, and flake-parts options
- [Module Options Reference](docs/module-options.md) — Auto-generated list of all module options
- [Packages Guide](docs/packages.md) — Using standalone MCP server packages
- [Contributing Guide](CONTRIBUTING.md) — Adding new packages and modules
## License
This project is licensed under the Apache License 2.0 - see the [LICENSE file](./LICENSE) for details.
