elixir-phoenix-intro

elixir-phoenix-intro is a skill for Claude Code, Codex from ccarvalho-eng/codex-elixir-phoenix. It costs 20 tokens per session (524 once invoked), scanned A, a copy of intro, MIT.

An interactive tutorial for learning the Elixir/Phoenix add-on’s commands and workflow. It is divided into six sections covering the main commands, reference material, safety rules, hooks, reviews, and a quick-reference sheet.

In plain words
What is it for?
Use it to learn the workflow from the beginning, jump directly to a numbered section, or review the command cheat sheet and next steps.
Why use it?
It gives someone new to the add-on a guided introduction instead of requiring them to discover its commands alone.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-intro
Any agent
npx skills add ccarvalho-eng/codex-elixir-phoenix --skill elixir-phoenix-intro
Clone the repo
git clone --depth 1 https://github.com/ccarvalho-eng/codex-elixir-phoenix

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for elixir-phoenix-intro

README.md
[![agentmods](https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-intro.svg)](https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-intro)
Your own site
<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-intro"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-intro.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 524 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 88% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00020 $0.00524
Opus 5 $0.00010 $0.00262
Sonnet 5 $0.00004 $0.00105
Haiku 4.5 $0.00002 $0.00052

Measured 4d ago against content hash d9c014e8c7f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

elixir-phoenix-intro scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

88% identical to intro — 17 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/elixir-phoenix-intro/SKILL.md · 65 lines

What it actually says

Plugin Introduction Tutorial

Interactive walkthrough of the Elixir/Phoenix plugin in 6 sections (~5 min).

Arguments

  • $ARGUMENTS may contain --section N to jump to a specific section (1-6)
  • No arguments = start from Section 1

Execution Flow

  1. Read references/tutorial-content.md for all section content
  2. Parse $ARGUMENTS for --section N flag (1-6)
  3. If --section N specified, jump directly to that section
  4. Otherwise start from Section 1

Section Presentation Loop

For each section:

  1. Present the section content completely — do NOT abbreviate or summarize. Every paragraph, table, and code block in the reference file must appear in output
  2. After presenting, use ask the user directly with options:
    • If sections remain: "Next: [next section title]", "Skip to Cheat Sheet", "Stop here"
    • If on final section (6): no question needed, end with closing message

Section Titles

N Title
1 Welcome
2 Core Workflow Commands
3 Knowledge & Safety Net
4 Hooks & Behavioral Rules
5 Init, Review & Gaps
6 Cheat Sheet & Next Steps

Iron Laws

  1. ONE section at a time — never dump all content at once
  2. User controls pace — always offer to stop between sections
  3. Clean formatting — use tables and code blocks, not walls of text
  4. NEVER skip the user's questions — tutorial is interactive, not a monologue; if the user asks a question mid-section, answer it before continuing

Closing Message

After Section 6 (or when user stops):

You're all set! Try ``elixir-phoenix-plan`` with your next feature to see the workflow in action.
Run ``elixir-phoenix-intro` --section N` anytime to revisit a specific section.

Notes

  • This runs in main conversation context (not a subagent)
  • Reference file is readable since skill runs in user's session
  • Keep tone welcoming but concise — developers don't want fluff
Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 65 lines · 20 tokens per session scan A d9c014e8c7f7

Subscribe to this mod's changes

elixir-phoenix-intro is a skill published in the GitHub repository ccarvalho-eng/codex-elixir-phoenix (11 stars, last pushed 4mo ago), licensed MIT. It adds 20 tokens to every session and 524 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to intro, differing in 17 lines, and is treated as a copy.

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