elixir-phoenix-quick

elixir-phoenix-quick is a skill for Claude Code, Codex from ccarvalho-eng/codex-elixir-phoenix. It costs 19 tokens per session (814 once invoked), scanned A, a copy of quick, MIT.

A short workflow for making a small change in a Phoenix application. Phoenix is a web framework for Elixir; this workflow skips the usual detailed planning and review steps.

In plain words
What is it for?
Use it for focused jobs such as adding pagination, fixing a login redirect, or adding CSV export to reports.
Why use it?
It removes extra process when the requested change is limited in scope. It still requires a compile check and keeps security checks in place.

Skill for Claude CodeCodex

Written for Claude Code and Codex: $ARGUMENTS substitution, but also agents/openai.yaml present. Also seen: mentions Codex.

Good fit Use it for focused jobs such as adding pagination, fixing a login redirect, or adding CSV export to reports.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick
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.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick/github.svg)](https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick)
Your own site
<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for elixir-phoenix-quick

Your own site · 80×15
<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-quick.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 814 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% 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 5.1 $0.00019 $0.00814
Opus 5.5 $0.00008 $0.00326
Sonnet 5.5 $0.00004 $0.00163
Haiku 4.5 $0.00002 $0.00081

Measured 1mo ago against content hash b40e0c07514e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

elixir-phoenix-quick 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 1mo 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

91% identical to quick — 26 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-quick/SKILL.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Quick Mode

Skip the planning ceremony. Get working code fast.

Usage

`elixir-phoenix-quick` Add pagination to posts
`elixir-phoenix-quick` Fix the login redirect bug
`elixir-phoenix-quick` Add CSV export to reports

Arguments

$ARGUMENTS = What to implement

How It Differs

Normal Mode Quick Mode
Spawn research agents No agents
Create plan document Mental model only
Parallel review Optional single review
Multiple iterations Single pass

Workflow

  1. Understand - Read relevant files (max 3)
  2. Implement - Write code directly
  3. Verify - Quick compile check
  4. Done - No ceremony

Iron Laws

  1. NEVER skip verification — run mix compile --warnings-as-errors after every change, even in quick mode
  2. DO NOT touch files outside the stated scope — quick mode means minimal blast radius; if a fix requires changes across multiple domains, escalate to elixir-phoenix-plan
  3. NEVER bypass security checks for speed — auth, input validation, and XSS rules apply regardless of change size

Rules in Quick Mode

Still Enforced (Iron Laws)

  • ✓ No process without runtime reason
  • ✓ No DB in mount
  • ✓ Security basics (no SQL injection, etc.)
  • ✓ Run mix format

Skipped

  • ✗ Parallel agent research
  • ✗ Written plan document
  • ✗ Multiple review passes
  • ✗ Documentation updates

When to Use

Good for:

  • Bug fixes with clear solution
  • Small features (<100 lines)
  • Refactoring with tests
  • Adding fields/columns
  • UI tweaks

Not for:

  • New authentication flows
  • Payment integration
  • Data migrations
  • Architectural changes
  • Anything touching security

Quick Patterns

Add Field

/quick Add phone field to users

→ Migration + schema + changeset + form field

Fix Bug

/quick Fix: posts not showing for admin users

→ Find issue + fix + verify

Add Endpoint

/quick Add GET /api/health endpoint

→ Route + controller + response

Read the full file on GitHub · 157 lines

Files

What ships with it

1 file 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. 1mo ago First seen · 157 lines · 19 tokens per session scan A b40e0c07514e

Subscribe to this mod's changes

elixir-phoenix-quick is a skill published in the GitHub repository ccarvalho-eng/codex-elixir-phoenix (11 stars, last pushed 5mo ago), licensed MIT. It adds 19 tokens to every session and 814 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to quick, differing in 26 lines, and is treated as a copy.

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