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Agent skill

Nix Justfile

by srid in srid/emanote

Conventions for writing justfile recipes in Nix-based projects.

Custom licenceAuto-check passed

Install Nix Justfile

skills CLI
$ npx skills add srid/emanote --skill nix-justfile -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install srid/emanote nix-justfile --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/srid/emanote.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/nix-justfile .claude/skills/nix-justfile && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
nix-justfile
GitHub stars
963
Token cost
~173 tokens
SKILL.md length
63 words
Files
1
Skills in repo
25
Repo updated
First seen
Licence
Custom licence

At a glance

Conventions for writing justfile recipes in Nix-based projects.

  • SKILL.md covers Doc comments, Devshell detection and Legibility
  • Calls nix

What it does

Nix Justfile is an agent skill from srid/emanote. Conventions for writing justfile recipes in Nix-based projects.

Its SKILL.md is about 170 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Emanate a structured view of your plain-text notes.

Example prompts

  • “Use the nix-justfile skill to convention for writing justfile recipes in Nix-based projects”
  • “/nix-justfile”

What it can do on your machine

Read from SKILL.md and the folder at commit 9d01037. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • nix

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Nix Justfile loads about 173 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 63 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~19
When it runs · the whole SKILL.md, loaded when a task matches
~173

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 63 words (~173 tokens).

“Every recipe must have a doc comment (# line above the recipe name).”

— opening of SKILL.md by srid, Custom licence
name
nix-justfile
user-invocable
false

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/nix-justfile of srid/emanote.

Open the folder on GitHubat commit 9d01037

Used in 1 other repository

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in srid/emanote, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Nix Justfile next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Nix Justfile compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Nix Justfile this skillsrid/emanote963—~173Automated safety check: PassCustom licence
Ecc Conventionsaffaan-m/ECC276k—~2.8kAutomated safety check: PassMIT
Ecc Recipesaffaan-m/ECC276k1 repos~1.6kAutomated safety check: PassMIT
Naming Conventionsthedaviddias/Front-End-Checklist74k—~481Automated safety check: PassMIT
Conventional CommitJanDeDobbeleer/oh-my-posh24k—~1.2kAutomated safety check: NotesMIT
Devcontainers Nixsickn33/agentic-awesome-skills47k1 repos~2.6kAutomated safety check: PassMIT

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  • Ecc Conventions

    affaan-m/ECC

    Development conventions and patterns for ECC. An agent skill from affaan-m/ECC.

    276k GitHub stars~2.8k tokensUpdated 4 days ago
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  • Conventional Commit

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  • Be Review

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  • CI

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  • Forge PR

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Questions about Nix Justfile

What does Nix Justfile do?

Conventions for writing justfile recipes in Nix-based projects. Nix Justfile is an agent skill from srid/emanote. Conventions for writing justfile recipes in Nix-based projects.

How do I install Nix Justfile in Claude Code?

Run `npx skills add srid/emanote --skill nix-justfile -a claude-code`. Or copy the skill folder (.agents/skills/nix-justfile in srid/emanote) into .claude/skills/nix-justfile in your project. Claude Code loads it when a task matches its description.

How do I install Nix Justfile in Codex?

Run `npx skills add srid/emanote --skill nix-justfile -a codex`. Or copy the skill folder (.agents/skills/nix-justfile in srid/emanote) into .agents/skills/nix-justfile in your project. Codex loads it when a task matches its description.

Can I use Nix Justfile in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add srid/emanote --skill nix-justfile -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nix-justfile, .gemini/skills/nix-justfile, .github/skills/nix-justfile and .opencode/skills/nix-justfile in your project.

What does Nix Justfile need to run?

Going by SKILL.md and its folder, Nix Justfile needs the command-line tools its instructions call (nix).

Does Nix Justfile access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Nix Justfile safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Nix Justfile use?

Nix Justfile has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Nix Justfile use?

About 173 tokens (SKILL.md is roughly 692 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Nix Justfile?

Skills that share tags, products or a category with Nix Justfile: Ecc Conventions (affaan-m/ECC, 276k stars), Ecc Recipes (affaan-m/ECC, 276k stars), Naming Conventions (thedaviddias/Front-End-Checklist, 74k stars) and Conventional Commit (JanDeDobbeleer/oh-my-posh, 24k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nix Justfile?

srid (a GitHub user) maintains it in srid/emanote, which has 963 GitHub stars. The repository holds 25 skills in this directory. The repository was last updated on July 26, 2026.

Source: srid/emanote on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.