jeff7712/nix-agent · skills/nix-agent/SKILL.md

nix-agent skillA

nix-agent is agent-read markdown (skill) from jeff7712/nix-agent: Operate on this machine's NixOS or Home Manager configuration with the nix-agent MCP tools (build, diff, switch, generations, eval_config, locate_option, check). Use when changing packages, options, or modules; diagnosing a failed build or switch; rolling back a generation; or asking what the live config currently resolves to. Requires the nix-agent MCP server (usually alongside mcp-nixos)..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add jeff7712/nix-agent/nix-agent@git:20260822.d1c961b
Exact content
mdr add jeff7712/nix-agent/nix-agent@sha256:2815a6aba7e4dcda

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_broblhqwu7stcel5.svg)](https://markdownregistry.com/a/art_broblhqwu7stcel5)

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Versions

versioncommittedcommitsizeaudit
git:20260822.d1c961b latest2026-08-22 d1c961b 11,414 BA view · diff
git:20260812.3ff59fa2026-08-12 3ff59fa 9,676 BA view · diff
git:20260812.58be3582026-08-12 58be358 10,036 BA view · diff
git:20260812.7f0dea22026-08-12 7f0dea2 7,913 BA view · diff
git:20260713.0d12db02026-07-13 0d12db0 7,473 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11414 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

jeff7712/nix-agent · 16 stars · license MIT · pushed 2026-09-09 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_broblhqwu7stcel5
GET https://markdownregistry.com/api/v1/resolve?ref=jeff7712/nix-agent/nix-agent
GET https://markdownregistry.com/api/v1/blob/2815a6aba7e4dcdae0d62f9a812fab773e18aee7393eeaace18e74d25364540b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.