Elixir Usage Rules

About

This skill provides a comprehensive way to access domain-specific guidance directly from Elixir packages by implementing a cascading search strategy. It looks for usage-rules.md files within local dependencies, a dedicated cache, or by progressively fetching them from hex.pm if they aren't available locally. By extracting relevant sections based on your specific coding context—such as querying, error handling, or testing—it ensures you receive high-signal guidance and code examples for frameworks like Ash, Phoenix, and Ecto without overwhelming your context window.

Key Features

• Context-aware extraction of relevant documentation sections to minimize context overload
• Cascading search strategy across local dependencies, cache, and remote fetches
• Offline-first approach by caching fetched usage rules in a local directory
• 145 GitHub stars
• Identification of 'Good' and 'Bad' code examples and common implementation mistakes
• Automated version detection using mix.lock, mix.exs, and hex.pm APIs

Use Cases

• Identifying and avoiding common anti-patterns or mistakes within specific Elixir libraries
• Onboarding to a new Elixir package by reviewing its idiomatic usage patterns and conventions
• Looking up framework-specific best practices for Ash or Phoenix while implementing features