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Agent skill

Build System

by sangrokjung in sangrokjung/claude-forge

A skill your agent uses when detecting and running project build systems automatically.

MITAuto-check passedWriting & Content

Install Build System

skills CLI
$ npx skills add sangrokjung/claude-forge --skill build-system -a claude-code

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

GitHub CLI
$ gh skill install sangrokjung/claude-forge build-system --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/sangrokjung/claude-forge.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/build-system .claude/skills/build-system && 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
build-system
GitHub stars
852
Token cost
~429 tokens
SKILL.md length
138 words
Files
1
Skills in repo
24
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when detecting and running project build systems automatically.

  • Works in 10 steps: package-lock.json → npm → yarn.lock → yarn → pnpm-lock.yaml → pnpm → …
  • Detecting and running project build systems automatically
  • SKILL.md covers 개요, 지원 빌드 시스템, 사용법 and 감지 우선순위, plus 1 more section
  • Calls npm, yarn and pnpm

What it does

Build System is an agent skill from sangrokjung/claude-forge. Use when detecting and running project build systems automatically. Supports npm/yarn/pnpm/pip/poetry/gradle/maven/cargo/go/make. Triggers on build, test run, project setup, package manager detection.

Its SKILL.md is about 430 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Writing & Content, covering Creative writing and fiction. It works with Gradle, npm and pnpm. The repository describes itself as: oh-my-zsh for Claude Code — 16 agents, 35 commands, 32 skills, 21 safety hooks in one install. v4.0 adds an adversarial review loop: a second agent that never sees the first… The licence is MIT.

When your agent uses it

  • Detecting and running project build systems automatically
  • Package manager detection

Example prompts

  • “/build-system”

Requirements

  • Python 3

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. package-lock.json → npm
  2. yarn.lock → yarn
  3. pnpm-lock.yaml → pnpm
  4. pyproject.toml → poetry
  5. requirements.txt → pip
  6. Cargo.toml → cargo
  7. go.mod → go
  8. build.gradle → gradle
  9. pom.xml → maven
  10. Makefile → make

What it can do on your machine

Read from SKILL.md and the folder at commit 34d881d. 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:

    • npm
    • yarn
    • pnpm
    • poetry
    • mvn
    • cargo
    • go
    • pip
    • make

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

  • Network

    No URLs in SKILL.md. Its commands use npm, yarn, pnpm and pip, which can reach the network depending on how they are called.

    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

Build System loads about 429 tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 138 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~53
When it runs · the whole SKILL.md, loaded when a task matches
~429

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

The full file from sangrokjung/claude-forge at commit 34d881d, republished under its MIT licence (© sangrokjung). 138 words, ~429 tokens.

Download SKILL.mdSave it as .claude/skills/build-system/SKILL.md (or your agent's skills folder).
name
build-system
description
Use when detecting and running project build systems automatically. Supports npm/yarn/pnpm/pip/poetry/gradle/maven/cargo/go/make. Triggers on build, test run, project setup, package manager detection.
version
1.0.0
last_updated
2026-01-31

Build System Skill

개요

프로젝트의 빌드 시스템을 자동으로 감지하고 적절한 빌드/테스트 명령어를 실행합니다.

지원 빌드 시스템

빌드 시스템감지 파일빌드 명령어테스트 명령어
npmpackage.jsonnpm run buildnpm test
yarnyarn.lockyarn buildyarn test
pnpmpnpm-lock.yamlpnpm buildpnpm test
Python (pip)requirements.txtpip install -r requirements.txtpytest
Python (poetry)pyproject.tomlpoetry installpoetry run pytest
Gradlebuild.gradle./gradlew build./gradlew test
Mavenpom.xmlmvn packagemvn test
CargoCargo.tomlcargo buildcargo test
Gogo.modgo build ./...go test ./...
MakeMakefilemakemake test

사용법

프로젝트 루트에서 빌드 시스템을 자동 감지하고 실행합니다.

빌드
bash
# 자동 감지 후 빌드
/build

# 특정 명령어로 빌드
/build --cmd="npm run build:prod"
테스트
bash
# 자동 감지 후 테스트
/test

# 특정 테스트만 실행
/test --filter="unit"

감지 우선순위

  1. package-lock.json → npm
  2. yarn.lock → yarn
  3. pnpm-lock.yaml → pnpm
  4. pyproject.toml → poetry
  5. requirements.txt → pip
  6. Cargo.toml → cargo
  7. go.mod → go
  8. build.gradle → gradle
  9. pom.xml → maven
  10. Makefile → make

커스터마이징

프로젝트별로 .claude/config.json에서 빌드 명령어를 오버라이드할 수 있습니다:

json
{
  "build": {
    "command": "npm run build:custom",
    "test_command": "npm run test:ci"
  }
}

© sangrokjung, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/build-system of sangrokjung/claude-forge.

Open the folder on GitHubat commit 34d881d

Compare with similar skills

Build System 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.

Build System compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Build System this skillsangrokjung/claude-forge852—~429Automated safety check: PassMIT
Fanyiafc163/fanyi1.6k—~766Automated safety check: PassMIT
Interlinked Supply ChainQuentinCody/interlinked-cli178—~2.8kAutomated safety check: PassMIT
Uv WorkflowAedelon/claude-code-blueprint120—~1.2kAutomated safety check: NotesCustom licence
Review Dependenciestobihagemann/turbo408—~1.5kAutomated safety check: PassMIT
China Mirror ResolverLeoYeAI/openclaw-master-skills2.2k—~4.6kAutomated safety check: NotesMIT

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Works with

Categories

Questions about Build System

What does Build System do?

A skill your agent uses when detecting and running project build systems automatically. Build System is an agent skill from sangrokjung/claude-forge. Use when detecting and running project build systems automatically.

When should I use Build System?

Build System fits situations like: detecting and running project build systems automatically; package manager detection.

How do I install Build System in Claude Code?

Run `npx skills add sangrokjung/claude-forge --skill build-system -a claude-code`. Or copy the skill folder (skills/build-system in sangrokjung/claude-forge) into .claude/skills/build-system in your project. Claude Code loads it when a task matches its description.

How do I install Build System in Codex?

Run `npx skills add sangrokjung/claude-forge --skill build-system -a codex`. Or copy the skill folder (skills/build-system in sangrokjung/claude-forge) into .agents/skills/build-system in your project. Codex loads it when a task matches its description.

Can I use Build System 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 sangrokjung/claude-forge --skill build-system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-system, .gemini/skills/build-system, .github/skills/build-system and .opencode/skills/build-system in your project.

What does Build System need to run?

Going by SKILL.md and its folder, Build System needs the command-line tools its instructions call (npm, yarn, pnpm, poetry, mvn and cargo). Our summary lists: Python 3.

Does Build System access the network?

SKILL.md contains no URLs. Its commands use npm and pip, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Build System 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 Build System use?

Build System is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Build System use?

About 429 tokens (SKILL.md is roughly 1.7k 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 Build System?

Skills that share tags, products or a category with Build System: Fanyi (afc163/fanyi, 1.6k stars), Interlinked Supply Chain (QuentinCody/interlinked-cli, 178 stars), Uv Workflow (Aedelon/claude-code-blueprint, 120 stars) and Review Dependencies (tobihagemann/turbo, 408 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Build System?

sangrokjung (a GitHub user) maintains it in sangrokjung/claude-forge, which has 852 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on September 3, 2026.

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