What is dev:auto:code?

An automatic implementation phase that applies a written feature plan without asking for approval.

Use it to create or modify files, add unit tests, run PHPStan at level 9, and update the workflow state.

It removes the manual approval checkpoint in the development workflow and records the implementation result for later review.

dev:auto:code — Skill for Claude Code by atournayre

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 atournayre/claude-marketplace --skill auto-code

Clone the repo

git clone --depth 1 https://github.com/atournayre/claude-marketplace

Made for: Claude Code.

Or install dev, the plugin that ships this one along with the rest of its 25 skills, 8 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/atournayre/claude-marketplace/auto-code/github.svg)](https://agentmods.dev/skills/atournayre/claude-marketplace/auto-code)

Your own site

<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/auto-code"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/auto-code/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/auto-code"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/auto-code.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 535 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00019	$0.00535
Opus 5	$0.00010	$0.00267
Sonnet 5	$0.00004	$0.00107
Haiku 4.5	$0.00002	$0.00053

Measured 9d ago against content hash f8f53b5bf13c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

dev:auto:code 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 9d 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.

dev/skills/auto-code/SKILL.md · 88 lines

What it actually says

Objectif

Instructions à Exécuter

IMPORTANT : Exécute ce workflow étape par étape :

Phase 6 du workflow automatisé : implémenter selon le plan SANS demander d'approbation.

Démarrage immédiat de l'implémentation.

Instructions

1. Lire le contexte

Déterminer le chemin du workflow state :

# Récupérer issue_number depuis le contexte
workflow_state_file=".claude/data/workflows/issue-${issue_number}-dev-workflow-state.json"

Lire le workflow state pour accéder au plan généré (Phase 5)
Lire docs/specs/{feature}.md (ou chemin du plan)
Si le plan n'existe pas, exit avec erreur

2. Implémenter selon le plan

Exécuter le contenu du plan :

Créer les fichiers nécessaires
Modifier les fichiers existants
Créer les tests unitaires

Pas de checkpoint d'approbation - implémentation directe.

3. Vérification PHPStan initiale

Lancer une première vérification PHPStan sans l'arrêter l'implémentation :

vendor/bin/phpstan analyse --level=9 2>&1

Noter les résultats pour la Phase 7 (Review).

4. Mettre à jour le workflow state

{
  "currentPhase": 6,
  "phases": {
    "6": {
      "status": "completed",
      "completedAt": "{ISO timestamp}",
      "durationMs": {durée},
      "filesCreated": ["{liste des fichiers}"],
      "filesModified": ["{liste des fichiers}"],
      "testsCreated": {nombre},
      "phpstanErrorsInitial": {nombre}
    }
  }
}

Règles

❌ Pas de checkpoint d'approbation
✅ Implémenter directement selon le plan
✅ Créer les tests unitaires
✅ Vérifier PHPStan (sans bloquer)
❌ Ne PAS corriger les erreurs (ce sera Phase 6)

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.

9d ago First seen · 88 lines · 19 tokens per session scan A f8f53b5bf13c

Subscribe to this mod's changes

dev:auto:code is a skill published in the GitHub repository atournayre/claude-marketplace (9 stars, last pushed 6mo ago), licensed MIT. It adds 19 tokens to every session and 535 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 2026-08-31.

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