Attune

A local-first CLI tool for comprehensive code quality checks. Attune analyzes your codebase for security vulnerabilities, architectural issues, performance problems, and best practices across multiple frameworks and languages.

Features

• 500+ Built-in Rules covering security, performance, architecture, and code quality
• Multi-Language Support: JavaScript/TypeScript, Python (Django, FastAPI, Flask, SQLAlchemy, Celery)
• Multi-Framework Support: React, Next.js, Vue, Svelte, Angular, Nuxt, Astro, Remix, SolidJS, Express, Fastify, tRPC, Django, FastAPI, Flask, SQLAlchemy, Celery, Pydantic, aiohttp, Starlette
• Project Type Detection: Automatically detects CLI tools, libraries, web apps, SaaS, mobile, desktop apps
• Security Scanning: OWASP Top 10, secret detection, SQL injection, command injection
• Architecture Patterns: MVC, state management, component patterns
• Performance Checks: Bundle size, memory leaks, async patterns
• Accessibility: WCAG 2.1 compliance checks
• TypeScript: Type safety, any usage, enum warnings
• Configurable: .attunerc config file with CLI defaults
• Multiple Output Formats: JSON, Markdown, HTML, SARIF
• Result Caching: Faster incremental scans (enabled by default)
• Custom Rules: Load your own rules via --rules-path
• Performance Metrics: See scan timing with --metrics

How Rules Work

Attune rules work in two ways:

1. Direct Detection (most rules): These detect specific code patterns that are problematic (e.g., SQL injection vulnerabilities, missing error handling)

2. Best Practice Warnings (some rules): These warn when recommended patterns aren't found. For example:

   • Rules warning about missing rate limiting, caching, or authentication
   • These help you evaluate whether your project follows security/performance best practices
   • You can decide to: fix it, add a .attuneignore entry, or acknowledge it's not needed for your use case

Tip: If you see warnings for patterns that don't apply to your project, you can add them to .attuneignore. Community feedback helps us improve rules with more specific detection patterns.

Installation

npm install -D attune
# or
npm install -g attune

Quick Start

# Analyze current directory (uses .attunerc if present)
attune analyze .

# First-run: Creates .attune/reports/, .attuneignore, and .attunerc

Usage

# Analyze current directory
attune analyze .

# Analyze specific path
attune analyze ./src

# Security checks only
attune analyze . --security

# Architecture checks only
attune analyze . --architecture

# Performance checks only
attune analyze . --performance

# Specify framework
attune analyze . --framework nextjs

# Output formats
attune analyze . --json
attune analyze . --markdown
attune analyze . --html

# Full scan (bypasses config file)
attune analyze . --full

# Skip config file, use .attuneignore only
attune analyze . --no-config

# Use custom rules from a file or directory
attune analyze . --rules-path ./my-rules/

# Fail on warnings (for CI pipelines)
attune analyze . --fail-on-warnings

# Show performance metrics
attune analyze . --metrics

Example Output

HTML Report

Before fixing issues:

After fixing all issues:

Configuration

.attunerc

Stores default CLI flags. One per line, comments start with #.

# Example .attunerc
--security    # Run security checks by default
--cache       # Enable incremental caching

.attuneignore

Exclude files from scanning:

# Test files
**/__tests__/**
**/*.test.ts
**/*.spec.ts

# Build outputs
dist/
build/

# Dependencies
node_modules/

Rule-Specific Ignores

You can skip specific rules on specific files while still running other rules on those files. This is useful for handling false positives:

# Format: RULE_ID:path
# Skip a specific rule on a specific file
OWASP_A08_INTEGRITY_FAIL:src/types/index.ts

# Skip a rule on multiple files using glob patterns
ERR_ASYNC_NO_AWAIT:src/cli/handlers/*.ts

# Multiple rule-specific ignores
RULE_ID_1:path/to/file1.ts
RULE_ID_2:path/to/file2.ts

Scanning Modes

Attune supports three scanning modes:

1. Default (recommended): Uses .attunerc config + .attuneignore
2. --full: Bypasses config file, runs all checks
3. --no-config: Ignores .attunerc, uses .attuneignore only

Output

Reports are saved to .attune/reports/:

# Report saved to .attune/reports/attune-2026-03-24T10-30-00.json
# Report saved to .attune/reports/attune-2026-03-24T10-30-00.html

Finding Limits

To prevent overwhelming reports, Attune limits each rule to a maximum of 10 findings per scan. The total count is still shown so you know the full scope. Use .attuneignore to suppress rules you don't want to see.

# Example warning when a rule exceeds the limit:
# Rule OWASP_A03_INJECTION: 150 findings, showing top 10. Use .attuneignore to suppress.

CLI Guide

For detailed CLI usage, output format comparison, and common workflows, see docs/GUIDE.md.

CLI Options

# Common options
attune analyze . --security      # Security only
attune analyze . --json          # JSON output
attune analyze . --cache         # Enable caching
attune analyze . --fail-on-warnings  # CI mode

# Specify framework/project type
attune analyze . --framework nextjs
attune analyze . --project-type saas

For complete CLI options, see docs/CONFIG.md.

NPM Scripts

Add to your package.json:

{
  "scripts": {
    "attune": "attune analyze .",
    "attune:check": "attune analyze . --security",
    "attune:ci": "attune analyze ."
  }
}

Supported Frameworks

JavaScript/TypeScript

• React
• Next.js
• Vue / Nuxt
• Svelte / SvelteKit
• Angular
• Astro
• Remix
• SolidJS
• Express
• Fastify
• tRPC

Python

• Django
• FastAPI
• Flask
• SQLAlchemy
• Celery
• Pydantic
• aiohttp
• Starlette

Supported Project Types

Attune automatically detects the type of project and applies appropriate rules:

• CLI - Command-line tools (docker, kubectl, git)
• Library - Reusable packages (npm packages, Python libs)
• Web App - Frontend-only web applications
• SaaS - Full-stack applications with users, payments, database
• Mobile - React Native, Flutter, native mobile apps
• Desktop - Electron, Tauri, native desktop apps
• Dev Tool - Developer tools (linters, bundlers, Attune)
• Firmware - Embedded/IoT code (C, Rust, C++)

Further Reading

Guide	Description
docs/GUIDE.md	CLI usage, scan modes, common workflows
docs/CONFIG.md	Complete config options reference
docs/CUSTOM_RULES.md	Creating custom rules
docs/CI_CD_REFERENCE.md	CI/CD pipeline examples
docs/CACHING.md	How result caching works
docs/RULES.md	All 500+ built-in rules

Exit Codes

• 0: Success (no critical issues)
• 1: Critical issues found

License

MIT