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Agent skill

Architecture Ownership

by instructa in instructa/agent-skills

Determine runtime owner, first-fix layer, and canonical long-term module or package owner in layered codebases.

No licenceAuto-check passedDevelopment

Install Architecture Ownership

skills CLI
$ npx skills add instructa/agent-skills --skill architecture-ownership -a claude-code

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

GitHub CLI
$ gh skill install instructa/agent-skills architecture-ownership --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/instructa/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/engineering/architecture-ownership .claude/skills/architecture-ownership && 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
architecture-ownership
GitHub stars
139
Token cost
~1.3k tokens
SKILL.md length
647 words
Files
4 (incl. references)
Skills in repo
17
Repo updated
First seen
Licence
None found

At a glance

Determine runtime owner, first-fix layer, and canonical long-term module or package owner in layered codebases.

  • Works in 5 steps: Identify the runtime concern → Name the layer where the wrong behavior… → Decide whether that layer is only the… → …
  • Placing code across UI vs platform shell vs runtime orchestration vs domain
  • SKILL.md covers Required Discovery, Required Output, Decision Order and Layer Map, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Architecture Ownership is an agent skill from instructa/agent-skills. Determine runtime owner, first-fix layer, and canonical long-term module or package owner in layered codebases. Use when placing code across UI vs platform shell vs runtime orchestration vs domain or application vs shared core vs adapter or integration layers, debugging ownership issues, removing duplicate policy paths, or answering "where should this live?" architecture questions.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `README.md`, `agents/openai.yaml` and `references/ownership-matrix.md`).

It sits in Development. The repository describes itself as: A curated collection of agent-skills.

When your agent uses it

  • Placing code across UI vs platform shell vs runtime orchestration vs domain
  • Application vs shared core vs adapter
  • Integration layers
  • Debugging ownership issues

Example prompts

  • “where should this live?”
  • “/architecture-ownership”

Workflow steps

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

  1. Identify the runtime concern
  2. Name the layer where the wrong behavior currently happens.
  3. Decide whether that layer is only the First fix owner or also the Canonical long-term owner.
  4. If the behavior is reusable product or business policy, move the long-term owner out of the runtime orchestration layer.
  5. Remove duplicate policy, fallback logic, or dual paths once the canonical owner is clear.

What it can do on your machine

Read from SKILL.md and the folder at commit d49c149. 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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Architecture Ownership loads about 1.3k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 102 tokens; SKILL.md has 647 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~102
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.2k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 647 words (~1,287 tokens).

“Use this skill for repo-specific ownership and placement decisions in layered systems.”

— opening of SKILL.md by instructa
name
architecture-ownership

Read the full SKILL.md on GitHub

Files

SKILL.md and 3 other files (references) in skills/engineering/architecture-ownership of instructa/agent-skills.

  • SKILL.md
  • README.md
  • agents/openai.yaml
  • references/ownership-matrix.md

Open the folder on GitHubat commit d49c149

Compare with similar skills

Architecture Ownership 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.

Architecture Ownership compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Architecture Ownership this skillinstructa/agent-skills139—~1.3kAutomated safety check: PassNone
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT
Finishing a Development Branchobra/superpowers297k5 repos~1.9kAutomated safety check: PassMIT
Typescript Advanced Typesrolling-scopes/rsschool-app10k25 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT

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Categories

Questions about Architecture Ownership

What does Architecture Ownership do?

Determine runtime owner, first-fix layer, and canonical long-term module or package owner in layered codebases. Architecture Ownership is an agent skill from instructa/agent-skills. Determine runtime owner, first-fix layer, and canonical long-term module or package owner in layered codebases.

When should I use Architecture Ownership?

Architecture Ownership fits situations like: placing code across UI vs platform shell vs runtime orchestration vs domain; application vs shared core vs adapter; integration layers; debugging ownership issues.

How do I install Architecture Ownership in Claude Code?

Run `npx skills add instructa/agent-skills --skill architecture-ownership -a claude-code`. Or copy the skill folder (skills/engineering/architecture-ownership in instructa/agent-skills) into .claude/skills/architecture-ownership in your project. Claude Code loads it when a task matches its description.

How do I install Architecture Ownership in Codex?

Run `npx skills add instructa/agent-skills --skill architecture-ownership -a codex`. Or copy the skill folder (skills/engineering/architecture-ownership in instructa/agent-skills) into .agents/skills/architecture-ownership in your project. Codex loads it when a task matches its description.

Can I use Architecture Ownership 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 instructa/agent-skills --skill architecture-ownership -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/architecture-ownership, .gemini/skills/architecture-ownership, .github/skills/architecture-ownership and .opencode/skills/architecture-ownership in your project.

What does Architecture Ownership need to run?

SKILL.md names no scripts, command-line tools or credentials: Architecture Ownership is instructions for the agent only.

Does Architecture Ownership 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 Architecture Ownership 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 Architecture Ownership use?

No licence was found for Architecture Ownership or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Architecture Ownership use?

About 1.3k tokens (SKILL.md is roughly 5.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 903 tokens, read only when the agent opens those files.

What are the alternatives to Architecture Ownership?

Skills that share tags, products or a category with Architecture Ownership: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Architecture Ownership?

instructa (a GitHub organization) maintains it in instructa/agent-skills, which has 139 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on September 28, 2026.

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