Elixir Genius

Opinionated Elixir/Phoenix/OTP architecture playbook that outputs a full ADR-and-guardrail documentation package, not just code.

Tested · Works

Test report

Verdict
Tested · Works
Score
9.2/10
Tested
Jul 16, 2026
Environment
Claude Code 2.x (agent harness)
Upstream re-checked
Aug 10, 2026 · 433da66

Produced a materially more prescriptive architecture brief than a baseline Elixir answer: it forces specific library choices (Req not HTTPoison, Jason not Poison), integer-cents money fields, optimistic locking, and a full ADR/guardrail/handoff doc package — but it ships as a raw personal dotfiles repo with zero README, and its allowed-tools list grants mcp__tidewave__* and mcp__context7__* MCP tools that the skill body never actually calls.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

  • Installs cleanly 5/5
  • Triggers reliably 5/5
  • Output vs. baseline 9/10
  • Docs & honesty 4/5

What Elixir Genius does

A 1300-line architecture-and-idiom reference for Elixir/Phoenix/LiveView/Ecto projects: prescribes specific libraries (Req, Jason, Swoosh, Zoi), OTP and money-handling patterns, and a Dave-Thomas-style multi-app doc structure (guardrails, ADRs, handoff docs) meant to let a Director/Implementor AI pair build a system without re-asking architectural questions. Use when designing or documenting a new Elixir/Phoenix system, planning supervision trees, or preparing AI-to-AI handoff docs.

How to install Elixir Genius

git clone https://github.com/agoodway/.claude.git
mkdir -p ~/.claude/skills
cp -r .claude/skills/elixir-genius ~/.claude/skills/elixir-genius

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Elixir Genius

  • /elixir-genius Opinionated Elixir/Phoenix/OTP architecture playbook that outputs a full ADR-and-guardrail documentation package, not just code.

It also activates on plain-language prompts like these:

  • Design the OTP supervision tree for a small Elixir task manager app.
  • Write architecture guardrail docs for our new Phoenix LiveView project.
  • Plan the Ecto schema and library choices for a Phoenix payments feature.

Frequently asked questions

Is the Elixir Genius skill free?
Yes. The skill itself is free from agoodway/.claude. SkillProof publishes the install command and an independent test verdict at no cost.
Does Elixir Genius work with Claude Code?
We tested it with Claude Code 2.x (agent harness) on Jul 16, 2026. Verdict: Tested · Works. Produced a materially more prescriptive architecture brief than a baseline Elixir answer: it forces specific library choices (Req not HTTPoison, Jason not Poison), integer-cents money fields, optimistic locking, and a full ADR/guardrail/handoff doc package — but it ships as a raw personal dotfiles repo with zero README, and its allowed-tools list grants mcp__tidewave__* and mcp__context7__* MCP tools that the skill body never actually calls.
What is the Elixir Genius SkillProof Score?
9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 4/5.
How do I install Elixir Genius?
Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Elixir Genius with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.