Creating Project Rules

create-rule

Create project rules for persistent AI guidance. Use when the user wants

diegosouzapw/awesome-omni-skill·0installs62stars

SKILL.md

Full skill instructions

Creating Project Rules

Create project rules in the platform-specific rules directory to provide persistent context for the AI agent.

Gather Requirements

Before creating a rule, determine:

Purpose: What should this rule enforce or teach?
Scope: Should it always apply, or only for specific files?
File patterns: If file-specific, which glob patterns?

Inferring from Context

If you have previous conversation context, infer rules from what was discussed. You can create multiple rules if the conversation covers distinct topics or patterns. Don't ask redundant questions if the context already provides the answers.

Required Questions

If the user hasn't specified scope, ask:

"Should this rule always apply, or only when working with specific files?"

If they mentioned specific files and haven't provided concrete patterns, ask:

"Which file patterns should this rule apply to?" (e.g., **/*.ts, backend/**/*.py)

It's very important that we get clarity on the file patterns.

Use the AskQuestion tool when available to gather this efficiently.

Rule File Format

Rules are markdown files in the rules directory with optional YAML frontmatter. Path and extension are platform-specific; use this platform's rules directory and the extension it expects (e.g. for Claude, rules live under the platform rules directory).

Example layout:

rules/
  typescript-standards.md
  react-patterns.md
  api-conventions.md

File Structure

---
description: Brief description of what this rule does
globs: **/*.ts  # File pattern for file-specific rules
alwaysApply: false  # Set to true if rule should always apply
---

# Rule Title

Your rule content here...

Frontmatter Fields

Field	Type	Description
`description`	string	What the rule does (shown in rule picker)
`globs`	string	File pattern - rule applies when matching files are open
`alwaysApply`	boolean	If true, applies to every session

Rule Configurations

Always Apply

For universal standards that should apply to every conversation:

---
description: Core coding standards for the project
alwaysApply: true
---

Apply to Specific Files

For rules that apply when working with certain file types:

---
description: TypeScript conventions for this project
globs: **/*.ts
alwaysApply: false
---

Best Practices

Keep Rules Concise

Under 50 lines: Rules should be concise and to the point
One concern per rule: Split large rules into focused pieces
Actionable: Write like clear internal docs
Concrete examples: Ideally provide concrete examples of how to fix issues

Example Rules

TypeScript Standards

---
description: TypeScript coding standards
globs: **/*.ts
alwaysApply: false
---

# Error Handling

\`\`\`typescript
// ❌ BAD
try {
  await fetchData();
} catch (e) {}

// ✅ GOOD
try {
  await fetchData();
} catch (e) {
  logger.error('Failed to fetch', { error: e });
  throw new DataFetchError('Unable to retrieve data', { cause: e });
}
\`\`\`

React Patterns

---
description: React component patterns
globs: **/*.tsx
alwaysApply: false
---

# React Patterns

- Use functional components
- Extract custom hooks for reusable logic
- Colocate styles with components

Checklist

File is in the rules directory with correct extension per platform
Frontmatter configured correctly
Content under 500 lines
Includes concrete examples

Install skill

Copy and run in your terminal

npx -y skills add https://github.com/diegosouzapw/awesome-omni-skill --skill create-rule-majiayu000

View on GitHub

skills/development/create-rule-majiayu000/SKILL.md

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