Elixir Genius
Opinionated Elixir/Phoenix/OTP architecture playbook that outputs a full ADR-and-guardrail documentation package, not just code.
Test report
- Verdict
- Tested · Works
- Score
- 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-geniusOpinionated 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.