Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
1.9 KiB
Rules
Rules are modular instruction files that Claude loads automatically. They extend CLAUDE.md without bloating it.
alwaysApply: true— loaded every session, regardless of what files are openpaths: [...]— loaded only when working with files matching the glob patterns
Available Rules
code-quality.md
Scope: Always
Principles (single-responsibility, no premature abstraction, composition over inheritance), naming conventions (files, variables, functions, constants), comment guidelines, code markers (TODO/FIXME/HACK/NOTE), and file organization (import order, export patterns, function ordering).
testing.md
Scope: Always
Three focused principles: test behavior not implementation, run single test files not the full suite, fix or delete flaky tests. Comprehensive test writing is handled by the test-writer skill.
security.md
Scope: Path-scoped (src/api/**, src/auth/**, src/middleware/**, **/routes/**, **/controllers/**)
Loads when touching API or auth code. Covers input validation, parameterized queries, XSS prevention, token handling, secret logging, constant-time comparison, security headers, rate limiting.
frontend.md
Scope: Path-scoped (**/*.tsx, **/*.jsx, **/*.vue, **/*.svelte, **/*.css, **/*.scss, **/*.html, **/components/**, **/pages/**, etc.)
Loads when touching frontend files. Design token requirements, design principles pick-list, component framework options, layout rules, accessibility (WCAG 2.1 AA), performance.
Adding Your Own
Create a new .md file in this directory:
---
alwaysApply: true
---
# Your Rule Name
- Your instructions here
Or path-scoped:
---
paths:
- "src/your-area/**"
---
# Your Rule Name
- Instructions that only apply when touching these files
See Claude Code docs for glob pattern syntax.