Ai Os Init

ai-os-init

Scaffolds the five-layer AI Operating System structure into any project directory. Non-destructive by design: existing files are never touched, hook entries are never duplicated, source trees are never imposed.

No dependencies — needs only Python 3 and bash, both already present on any machine running Claude Code. The hooks that call formatters or type checkers (ruff, prettier, tsc, mypy, …) degrade silently when those tools aren't installed, so nothing ever breaks.

The Five Layers It Wires Up

| # | Layer | What gets created | |---|---|---| | 01 | Memory | CLAUDE.md — always-loaded project map, conventions, links | | 02 | Knowledge | .claude/skills/new-adr/ + .claude/skills/clean-tests/ — on-demand skills | | 03 | Guardrails | .claude/hooks/ — six PreToolUse/PostToolUse hooks (see below) | | 04 | Delegation | .claude/agents/docs-auditor.md — read-only docs drift subagent | | 05 | Docs | docs/ architecture + decisions (ADR log) + runbooks |

Hooks installed (wired into .claude/settings.json)

| Hook | Event | What it does | |---|---|---| | guard-secrets.sh | PreToolUse (Edit/Write) | Blocks writes to secret-looking files (.env, keys, credentials) | | branch-guard.sh | PreToolUse (Bash) | Blocks force-push and direct commit/push to protected branches; runs CI before push | | auto-format.sh | PostToolUse (Edit/Write) | Formats the edited file (ruff/black/prettier/gofmt/rustfmt), best-effort | | typecheck.sh | PostToolUse (Edit/Write) | Surfaces type errors (tsc/mypy) if the project is configured for them | | n+1-guard.sh | PostToolUse (Edit/Write) | Warns on likely N+1 query patterns (DB call inside a loop) | | audit-log.sh | PostToolUse (Bash) | Silently appends every bash command to .claude/command-audit.log |

> Two of these change git/agent behaviour out of the box: branch-guard.sh > will block commits on main/master/develop/staging/production and force > pushes, and audit-log.sh logs every command. Tell your team these are > active, or drop the hooks you don't want from templates/.claude/hooks/ > before sharing.

How to Run

Tell Claude to run the scaffold on the current project:

python3 "${CLAUDE_PLUGIN_ROOT}/skills/ai-os-init/scaffold.py"
# or for a specific path:
python3 "${CLAUDE_PLUGIN_ROOT}/skills/ai-os-init/scaffold.py" /path/to/project

Report the created/skipped/merged summary to the user.

Non-Destructive Contract

• File exists → skip it, report it as "already present"
• File missing → create it from the template
• .claude/settings.json → load and merge; append each hook entry **only

if** a hook with the same command isn't already there — then write back preserving all existing keys

• CLAUDE.md exists → leave it byte-identical; note which recommended

sections are absent so the user can fill them in

• No src/ imposed — if the project has src/, lib/, or app/ but

no nested CLAUDE.md, suggest adding one; never create source dirs

What to Do After Scaffolding

After running, guide the user through:

1. Fill in CLAUDE.md — project name, conventions, key commands
2. Fill in docs/architecture.md — tech stack, components, data flow
3. Try new-adr: say "create an ADR about [decision]"
4. Try clean-tests: say "clean up the tests"
5. Try docs-auditor: say "audit the docs"
6. guard-secrets is already active — it blocks writes to secret-looking files

Template Source

All templates live alongside this skill in templates/. To customise what gets created in future projects, fork the repo and edit the templates there (editing the installed plugin cache directly gets overwritten on the next update).

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: OmarSaleh506
• Source: OmarSaleh506/skills
• License: MIT
• Homepage: https://skills.sh/OmarSaleh506/skills

Install and usage instructions live in the source repository linked above.