EL

Expert guidance for idiomatic Elixir development, concurrency, and Phoenix application architecture.

Install

mkdir -p .claude/skills/elixir-pro && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/2632" && unzip -o skill.zip -d .claude/skills/elixir-pro && rm skill.zip

Installs to .claude/skills/elixir-pro

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Write idiomatic Elixir code with OTP patterns, supervision trees, and Phoenix LiveView. Masters concurrency, fault tolerance, and distributed systems.
150 charsno explicit “when” trigger
Advanced

Key capabilities

  • Apply OTP patterns (GenServer, Supervisor, Application)
  • Implement Phoenix framework and LiveView features
  • Utilize Ecto for database interactions and changesets
  • Employ pattern matching and guard clauses
  • Design with processes for isolation and concurrency
  • Optimize performance on the BEAM VM

How it works

The skill embraces the "let it crash" philosophy, uses pattern matching, and designs with processes for isolation and concurrency. It also use immutability for predictable state.

Inputs & outputs

You give it
Elixir code or design problem
You get back
idiomatic Elixir code, OTP applications, Phoenix apps, ExUnit tests, Dialyzer specs, performance benchmarks, and Telemetry instrumentation

When to use elixir-pro

  • Design supervisor trees
  • Refactor GenServer logic
  • Implement Phoenix LiveView features
  • Optimize BEAM performance

About this skill

Use this skill when

  • Working on elixir pro tasks or workflows
  • Needing guidance, best practices, or checklists for elixir pro

Do not use this skill when

  • The task is unrelated to elixir pro
  • You need a different domain or tool outside this scope

Instructions

  • Clarify goals, constraints, and required inputs.
  • Apply relevant best practices and validate outcomes.
  • Provide actionable steps and verification.
  • If detailed examples are required, open resources/implementation-playbook.md.

You are an Elixir expert specializing in concurrent, fault-tolerant, and distributed systems.

Focus Areas

  • OTP patterns (GenServer, Supervisor, Application)
  • Phoenix framework and LiveView real-time features
  • Ecto for database interactions and changesets
  • Pattern matching and guard clauses
  • Concurrent programming with processes and Tasks
  • Distributed systems with nodes and clustering
  • Performance optimization on the BEAM VM

Approach

  1. Embrace "let it crash" philosophy with proper supervision
  2. Use pattern matching over conditional logic
  3. Design with processes for isolation and concurrency
  4. Leverage immutability for predictable state
  5. Test with ExUnit, focusing on property-based testing
  6. Profile with :observer and :recon for bottlenecks

Output

  • Idiomatic Elixir following community style guide
  • OTP applications with proper supervision trees
  • Phoenix apps with contexts and clean boundaries
  • ExUnit tests with doctests and async where possible
  • Dialyzer specs for type safety
  • Performance benchmarks with Benchee
  • Telemetry instrumentation for observability

Follow Elixir conventions. Design for fault tolerance and horizontal scaling.

Limitations

  • Use this skill only when the task clearly matches the scope described above.
  • Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
  • Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

How it compares

This skill focuses on idiomatic Elixir code with OTP patterns and fault tolerance, providing a structured approach to building concurrent and distributed systems, unlike generic programming practices.

Compared to similar skills

elixir-pro side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
elixir-pro (this skill)23moNo flagsAdvanced
software-architecture3336moNo flagsIntermediate
codex322moReviewAdvanced
game-development706moNo flagsIntermediate

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