init-rules

A command that creates separate CLAUDE.md rule files for selected project folders. These files hold local coding conventions that load when work happens in those folders.

In plain words
What is it for?
Use it to organize conventions for areas such as frontend, backend, app, or source-code directories.
Why use it?
It keeps the main project instructions smaller while preserving folder-specific rules, and it can be reversed because the rules are moved rather than deleted.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/komluk/scaffolding/init-rules
Clone the repo
git clone --depth 1 https://github.com/komluk/scaffolding
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 951 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00033 $0.00951
Opus 5 $0.00016 $0.00476
Sonnet 5 $0.00007 $0.00190
Haiku 4.5 $0.00003 $0.00095

Measured 2d ago against content hash 02417a49782d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

init-rules scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/init-rules.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/init-rules Command

Scaffold path-scoped nested CLAUDE.md files into the current project so that per-area code conventions load only when Claude works on files under that directory — trimming always-loaded context without weakening routing.

This is a generator: it writes nested CLAUDE.md files into the USER project (e.g. frontend/CLAUDE.md), not into the plugin. It is opt-in and reversible — conventions are relocated, never deleted.

Usage

/init-rules [subdir ...]

If no subdirs are given, propose candidate areas (e.g. frontend/, backend/, app/, src/) detected in the repo and ask which to scaffold.

Mechanism (native — no custom engine)

Claude Code natively auto-loads a CLAUDE.md placed in a subdirectory only when working on files under that tree. /init-rules uses exactly this primitive; it does not build a paths: glob matcher or a hook injector.

HARD INVARIANT — routing never moves

The routing Protocol + Decision Tree + Agents table stay in the project-root CLAUDE.md, always-loaded. Routing must fire on the first message before any file is edited; a nested file only loads on Edit/Write under its tree — too late to route. This command:

  • MUST NOT copy, move, or delete the routing sections from the root CLAUDE.md.
  • MUST NOT overwrite an existing nested CLAUDE.md (idempotent — skip if present).
  • Only path-specific code conventions (types location, stack notes, per-area style) are candidates to relocate into nested files.

Steps

Follow these steps exactly.

1. Locate the plugin root

Reuse the same discovery as /init-scaffolding (search the marketplace cache paths) to find PLUGIN_ROOT. If not found, stop and tell the user to run /plugin install scaffolding@komluk-scaffolding first.

2. Resolve target subdirs

Use the args if given. Otherwise detect candidate area directories and confirm with the user before writing anything.

3. Scaffold a nested CLAUDE.md per target (idempotent)

Read the full file on GitHub · 98 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 98 lines · 33 tokens per session scan A 02417a49782d

Subscribe to this mod's changes

init-rules is a command published in the GitHub repository komluk/scaffolding (15 stars, last pushed 27d ago), licensed MIT. It adds 33 tokens to every session and 951 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.