Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/mcb-smart-boy/nixos-config/modulenpx skills add MCB-SMART-BOY/nixos-config --skill modulegit clone --depth 1 https://github.com/MCB-SMART-BOY/nixos-configWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mcb-smart-boy/nixos-config/module)<a href="https://agentmods.dev/skills/mcb-smart-boy/nixos-config/module"><img src="https://agentmods.dev/badge/skills/mcb-smart-boy/nixos-config/module.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00032 | $0.00744 |
| Opus 5 | $0.00016 | $0.00372 |
| Sonnet 5 | $0.00006 | $0.00149 |
| Haiku 4.5 | $0.00003 | $0.00074 |
Grade A, and why
module scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Module
系统模块模板
# modules/<name>.nix — <职责>
{ config, lib, pkgs, ... }:
let cfg = config.mcb.<选项>;
in {
config = lib.mkIf cfg.enable {
# 实现
};
}
规则:lib.mkIf 条件启用、不用 with lib;;需要机器覆盖的共享默认值用 lib.mkDefault,合并型列表/条件接线按语义选择优先级;普通模块不声明 options.mcb.*(impermanence/secrets 平台骨架例外,需注明原因)。
共享辅助函数
NixOS 系统模块从 modules/lib.nix 导入,不要本地重定义:
inherit (import ./lib.nix { inherit lib; })
resolvePkg
validUserName
managedUserNames;
resolvePkg — 安全解析 nixpkgs 路径(替代手动 tryEval)
validUserName — POSIX 用户名格式校验
managedUserNames — 从 mcb.users 解析用户,空列表回退 mcb.user
Home Manager 用户模块属于 /home/admin/mcbctl,其 homeModules.default 是 portable core;homeModules.linux、homeModules.niri 和 homeModules.nixos 分别提供 Linux、Niri 与 NixOS integration 能力。用户入口校验、能力 provider 与输出聚合由 mcbctl 的 flake/default.nix 维护,不从 NixOS 仓库导入。
创建步骤
- 如需新开关 →
modules/options.nix的options.mcb下声明 - 创建
modules/<name>.nix - 在
modules/default.niximports 中注册(按分组顺序:核心→系统基础→包服务→桌面扩展→平台级) nix fmt && statix check && deadnix --fail . && nix flake check
Home Manager 用户模块模板
# /home/admin/mcbctl/home/<feature>.nix
{ config, lib, pkgs, ... }:
{
config = {
home.packages = with pkgs; [ ... ];
programs.xxx.enable = true;
xdg.configFile."..." = { ... };
};
}
在 /home/admin/mcbctl/home/default.nix 的 imports 中加入 ./<feature>.nix,再按模块是否依赖宿主能力选择 homeModules.linux、homeModules.niri 或 homeModules.nixos,然后在 mcbctl 目录运行 nix flake check。
命名约定
| 类型 | 文件 | 示例 |
|---|---|---|
| 系统功能 | modules/<name>.nix |
gaming.nix |
| 系统服务 | modules/services/<name>.nix |
services/desktop.nix |
| 用户功能 | /home/admin/mcbctl/home/<name>.nix |
desktop.nix |
| 选项声明 | modules/options.nix(唯一) |
— |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed · +6 lines fa44d21ae565
- 5d ago First seen · 63 lines · 32 tokens per session scan A 386b4f659713
module is a skill published in the GitHub repository MCB-SMART-BOY/nixos-config (10 stars, last pushed today), licensed Apache-2.0. It adds 32 tokens to every session and 744 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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