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Agent skill

Arckit Build

by tractorjuice in tractorjuice/arc-kit

Bulk-builds a project's ArcKit artefacts in parallel from a YAML recipe: computes the artefact dependency DAG, dispatches one subagent per target per wave, validates each output, commits the wave…

Custom licenceAuto-check passedAgent Workflows

Install Arckit Build

skills CLI
$ npx skills add tractorjuice/arc-kit --skill arckit-build -a claude-code

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

GitHub CLI
$ gh skill install tractorjuice/arc-kit arckit-build --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/tractorjuice/arc-kit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/arckit-claude/skills/arckit-build .claude/skills/arckit-build && 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
arckit-build
GitHub stars
2.3k
Token cost
~7.6k tokens
SKILL.md length
3,263 words
Files
5
Skills in repo
9
Repo updated
First seen
Licence
Custom licence

At a glance

Bulk-builds a project's ArcKit artefacts in parallel from a YAML recipe: computes the artefact dependency DAG, dispatches one subagent per target per wave, validates each output, commits the wave…

  • Works in 8 steps: Plan dispatch → Single message, multiple Agent calls —… → Wait for all agents → …
  • Tasks that involve Subagents
  • SKILL.md covers Operating principles, Args, Recipe loading and Input-hash change detection, plus 7 more sections
  • Calls git and claude

What it does

Arckit Build is an agent skill from tractorjuice/arc-kit. Bulk-builds a project's ArcKit artefacts in parallel from a YAML recipe: computes the artefact dependency DAG, dispatches one subagent per target per wave, validates each output, commits the wave and persists progress to .arckit/state.json so a build can resume. Manual only: run /arckit:arckit-build with --plan, --resume, --target, --refresh or --recipe. Not needed for a single artefact; run that /arckit: command directly.

Its SKILL.md is about 7.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files (for example `recipes/uk-fs-payments.yaml`, `recipes/uk-mod-sovereign.yaml` and `recipes/uk-nhs-clinical-safety.yaml`).

It sits in Agent Workflows, covering Subagents. It works with Model Context Protocol. The repository describes itself as: The Enterprise Architecture Governance Harness — strategy, architecture, delivery, and assurance using AI coding assistants.

When your agent uses it

  • Tasks that involve Subagents

Example prompts

  • “/arckit-build”

Requirements

  • Pre-approved tools (allowed-tools): Read(/${CLAUDE_PLUGIN_ROOT}/**)

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Plan dispatch
  2. Single message, multiple Agent calls — all in parallel
  3. Wait for all agents
  4. Validate
  5. Update state.json
  6. Git commit
  7. Halt-on-fail
  8. Move to next wave

What it can do on your machine

Read from SKILL.md and the folder at commit 6d5ad01. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read(/${CLAUDE_PLUGIN_ROOT}/**)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git
    • claude

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

  • Network

    No URLs in SKILL.md. Its commands use git, 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

Arckit Build loads about 7.6k tokens when it runs. Until then it costs about 110 tokens; SKILL.md has 3,263 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~110
When it runs · the whole SKILL.md, loaded when a task matches
~7.6k

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 3,263 words (~7,645 tokens).

“You are running the ArcKit build harness. Your job is orchestration only — never read or write artefact content yourself. Spawn subagents for that.”

— opening of SKILL.md by tractorjuice, Custom licence
name
arckit-build
allowed-tools
Read(/${CLAUDE_PLUGIN_ROOT}/**)
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files in plugins/arckit-claude/skills/arckit-build of tractorjuice/arc-kit.

  • SKILL.md
  • recipes/uk-fs-payments.yaml
  • recipes/uk-mod-sovereign.yaml
  • recipes/uk-nhs-clinical-safety.yaml
  • recipes/uk-saas.yaml

Open the folder on GitHubat commit 6d5ad01

Compare with similar skills

Arckit Build 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.

Arckit Build compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Arckit Build this skilltractorjuice/arc-kit2.3k—~7.6kAutomated safety check: PassCustom licence
Clone App Pat Proper-simmons/clone-app-pat-pro-public259—~1.9kAutomated safety check: NotesNone
Skill Design Referencelow-hands/MyCareer108—~2.3kAutomated safety check: PassMIT
Load PR CommentsNeoLabHQ/context-engineering-kit1.8k—~2.1kAutomated safety check: PassGPL-3.0
PmApra-Labs/apra-fleet101—~5.4kAutomated safety check: PassCustom licence
Prompt OptimizerCranot/roam-code517—~1.1kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Arckit Build

What does Arckit Build do?

Bulk-builds a project's ArcKit artefacts in parallel from a YAML recipe: computes the artefact dependency DAG, dispatches one subagent per target per wave, validates each output, commits the wave…. Arckit Build is an agent skill from tractorjuice/arc-kit.json so a build can resume.

When should I use Arckit Build?

Arckit Build fits situations like: tasks that involve Subagents.

How do I install Arckit Build in Claude Code?

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

How do I install Arckit Build in Codex?

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

Can I use Arckit Build 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 tractorjuice/arc-kit --skill arckit-build -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/arckit-build, .gemini/skills/arckit-build, .github/skills/arckit-build and .opencode/skills/arckit-build in your project.

What does Arckit Build need to run?

Going by SKILL.md and its folder, Arckit Build needs the command-line tools its instructions call (git and claude). Its frontmatter pre-approves these tools: Read(/${CLAUDE_PLUGIN_ROOT}/**).

Does Arckit Build access the network?

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

Is Arckit Build 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 Arckit Build use?

Arckit Build 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 Arckit Build use?

About 7.6k tokens (SKILL.md is roughly 31k 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 Arckit Build?

Skills that share tags, products or a category with Arckit Build: Clone App Pat Pro (per-simmons/clone-app-pat-pro-public, 259 stars), Skill Design Reference (low-hands/MyCareer, 108 stars), Load PR Comments (NeoLabHQ/context-engineering-kit, 1.8k stars) and Pm (Apra-Labs/apra-fleet, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Arckit Build?

tractorjuice (a GitHub user) maintains it in tractorjuice/arc-kit, which has 2,253 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 8, 2026.

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