dev:explore

dev:explore is a skill for Claude Code from atournayre/claude-marketplace. It costs 18 tokens per session (1,168 once invoked), scanned A, original, MIT.

A codebase exploration workflow that uses parallel agents to map existing features, architecture, and coding patterns. It is Phase 1 of a development workflow.

In plain words
What is it for?
Use it to investigate similar features, understand the project structure, and identify relevant files and abstractions before implementation.
Why use it?
It reduces the time spent searching through unfamiliar code before making a change. It also helps ensure new work follows patterns already used in the project.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; mentions Claude Code.

Part of the dev plugin — 25 skills, 8 agents shipped together

Good fit Use it to investigate similar features, understand the project structure, and identify relevant files and abstractions before implementation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/atournayre/claude-marketplace/explore
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 explore
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.

agentmods badge for dev:explore

README.md
[![agentmods](https://agentmods.dev/badge/skills/atournayre/claude-marketplace/explore/github.svg)](https://agentmods.dev/skills/atournayre/claude-marketplace/explore)
Your own site
<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/explore"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/explore/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 dev:explore

Your own site · 80×15
<a href="https://agentmods.dev/skills/atournayre/claude-marketplace/explore"><img src="https://agentmods.dev/badge/skills/atournayre/claude-marketplace/explore.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,168 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.01168
Opus 5 $0.00009 $0.00584
Sonnet 5 $0.00004 $0.00234
Haiku 4.5 $0.00002 $0.00117

Measured 11d ago against content hash a824561afab2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dev:explore 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 11d 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/explore/SKILL.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Configuration de sortie

IMPORTANT : Cette skill génère un résumé d'exploration structuré et nécessite un format de sortie spécifique.

Lis le frontmatter de cette skill. Si un champ output-style est présent, exécute immédiatement :

/output-style <valeur-du-champ>

Note : Une fois que le champ output-style sera supporté nativement par Claude Code, cette instruction pourra être supprimée.

Output-style requis : bullet-points

Objectif

Instructions à Exécuter

IMPORTANT : Exécute ce workflow étape par étape :

Phase 1 du workflow de développement : explorer le codebase pour comprendre les patterns existants.

Prérequis

⚠️ Plugin feature-dev requis pour les agents code-explorer.

Si non installé :

/plugin install feature-dev@claude-code-plugins

Instructions

1. Lire le contexte

  • Lire .claude/data/.dev-workflow-state.json pour connaître la feature en cours
  • Si le fichier n'existe pas, demander à l'utilisateur de lancer /dev:discover d'abord

2. Créer les tâches d'exploration

Utiliser TaskCreate pour chaque agent :

TaskCreate #1: Explorer features similaires (code-explorer)
TaskCreate #2: Mapper architecture et abstractions (code-explorer)
TaskCreate #3: Analyser intégrations (code-explorer) - optionnel
TaskCreate #4: Consolider résultats et présenter résumé

Important :

  • Utiliser activeForm (ex: "Explorant features similaires", "Mappant l'architecture")
  • Tâche #3 optionnelle selon pertinence de la feature
  • Tâche #4 bloquée par les agents 1-3 (utiliser addBlockedBy)
  • Les agents 1-3 se lancent en parallèle

3. Lancer les agents code-explorer

⚠️ Avant de lancer les agents : Marquer les tâches en in_progress :

  • TaskUpdate → tâche #1 en in_progress
  • TaskUpdate → tâche #2 en in_progress
  • TaskUpdate → tâche #3 en in_progress (si créée)

Lancer 2-3 agents code-explorer en parallèle avec des focus différents :

Agent 1 : Features similaires

Trouve des features similaires à "{feature}" dans le codebase.
Trace leur implémentation de bout en bout.
Retourne les 5-10 fichiers clés à lire.

Read the full file on GitHub · 154 lines

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. 11d ago First seen · 154 lines · 18 tokens per session scan A a824561afab2

Subscribe to this mod's changes

dev:explore is a skill published in the GitHub repository atournayre/claude-marketplace (9 stars, last pushed 6mo ago), licensed MIT. It adds 18 tokens to every session and 1,168 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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