elixir-phoenix-full

elixir-phoenix-full is a skill for Claude Code, Codex from ccarvalho-eng/codex-elixir-phoenix. It costs 21 tokens per session (1,610 once invoked), scanned A, original, MIT.

A complete workflow for building large features in Phoenix, the web framework for Elixir. It covers investigating the existing code, planning, implementation, checks, review, and recording solutions for future work.

In plain words
What is it for?
Use it to build features such as magic-link authentication, real-time notifications with Phoenix PubSub, or background email jobs.
Why use it?
It gives a structured path through complex Phoenix changes and can return to earlier work when review finds problems.

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-full
Any agent
npx skills add ccarvalho-eng/codex-elixir-phoenix --skill elixir-phoenix-full
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-full

README.md
[![agentmods](https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-full.svg)](https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-full)
Your own site
<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-full"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-full.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00021 $0.01610
Opus 5 $0.00010 $0.00805
Sonnet 5 $0.00004 $0.00322
Haiku 4.5 $0.00002 $0.00161

Measured 4d ago against content hash e43dae5346c0, 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-full 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.

skills/elixir-phoenix-full/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Full Phoenix Feature Development

Execute complete Elixir/Phoenix feature development autonomously: research patterns, plan with specialist agents, implement with verification, Elixir code review. Cycles back automatically if review finds issues.

Usage

`elixir-phoenix-full` Add user authentication with magic links
`elixir-phoenix-full` Real-time notification system with Phoenix PubSub
`elixir-phoenix-full` Background job processing for email campaigns --max-cycles 5

Workflow Overview

┌───────────────────────────────────────────────────────────────────────────────┐
│                 `elixir-phoenix-full` {feature}                               │
├───────────────────────────────────────────────────────────────────────────────┤
│                                                                               │
│  ┌────────┐  ┌────────┐  ┌────────┐  ┌────────┐  ┌────────┐  ┌────────┐       │
│  │Discover│→ │  Plan  │→ │  Work  │→ │ Verify │→ │ Review │→ │Compound│→ Done │
│  │ Assess │  │[Pn-Tm] │  │Execute │  │  Full  │  │4 Agents│  │Capture │       │
│  │ Decide │  │ Phases │  │ Tasks  │  │  Loop  │  │Parallel│  │ Solve  │       │
│  └───┬────┘  └────────┘  └────────┘  └─────┬──┘  └────────┘  └────────┘       │
│      │                               ↑     │       ↑              │           │
│      ├── "just do it" ───────────────┤     │       │              │           │
│      ├── "plan it" ──┐               │     ↓       │              │           │
│      │               ↓               │   ┌────────┐│              │           │
│      │     ┌──────────────┐          │   │  Fix   ││  ┌────────┐  │           │
│      │     │   PLANNING   │          │   │ Issues │└─→│  Fix   │──┘           │
│      │     └──────────────┘          │   └───┬────┘   │ Review │              │
│      │                               │       ↓        │Findings│              │
│      │                        ┌──────┴─────────┐      └────┬───┘              │
│      │                        │   VERIFYING    │◄──────────┘                  │
│      └── "research it" ───────┘  (re-verify)                                  │
│           (comprehensive plan)                                                │
│                                                                               │
│  On Completion:                                                               │
│  Auto-compound: Capture solved problems → .codex/solutions/                   │
│  Auto-suggest: `elixir-phoenix-document` → `elixir-phoenix-learn-from-fix`    │
│                                                                               │
└───────────────────────────────────────────────────────────────────────────────┘

Read the full file on GitHub · 126 lines

Files

What ships with it

5 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 · 126 lines · 21 tokens per session scan A e43dae5346c0

Subscribe to this mod's changes

elixir-phoenix-full is a skill published in the GitHub repository ccarvalho-eng/codex-elixir-phoenix (11 stars, last pushed 4mo ago), licensed MIT. It adds 21 tokens to every session and 1,610 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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