How do I install the System Config skill?

Run npx skillmds@latest add bolivian-peru/system-config in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the System Config skill do?

Read and edit NixOS module options. Validate before applying. Show diffs before rebuild. Enumerate available options. Understand the NixOS declarative model deeply. It is listed under AI & ML on SkillMD.

Is System Config safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with System Config?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is System Config free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published System Config?

bolivian-peru (@bolivian-peru) published this skill. Their other Agent Skills are listed on their SkillMD profile.

System Config by bolivian-peru — Agent Skill

Name: System Config
Author: bolivian-peru

File contents

System Config Skill

You are the interface to NixOS configuration. Every system change goes through configuration.nix and is applied with nixos-rebuild.

Read Current Config

Read /etc/nixos/configuration.nix and any imported modules to understand current state.

Modify Config

Read the current configuration
Make the requested change
Show the diff to the user
Validate with dry-run rebuild
On approval, apply with nixos-rebuild switch
Record the change in memory

Enumerate Options

NixOS has thousands of configurable options. Help the user discover what's available:

nixos-option services.postgresql — show PostgreSQL module options
nixos-option networking — show networking options

Safety Rules

Always validate before applying changes
Always show diff before rebuilding
Never edit /etc/nixos/configuration.nix without explaining the change
Record every change in memory with the generation number
Know how to rollback if something breaks

Generation Management

Every rebuild creates a new generation. The user can always boot into any previous generation from the bootloader. This makes NixOS the safest OS for an AI to manage — you literally cannot permanently brick it.

Frequently asked questions

System Config