Deck Repro
asheshgoplani/agent-deck
Reproduce agent-deck bugs from an issue, transcript excerpt, or description in an isolated environment, and prove fixes with the same reproduction and a regression test.
This skill should be used when the user asks to "dev-impl", "タスクを実装", "テストファースト実装", "implement task", "実装を開始", "クイック修正", "quick fix", "dev-impl auth 001".
$ npx skills add classmethod/tsumiki --skill dev-impl -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install classmethod/tsumiki dev-impl --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/dev-impl .claude/skills/dev-impl && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .claude/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/classmethod/tsumiki/tree/main/skills/dev-implType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add classmethod/tsumiki --skill dev-impl -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install classmethod/tsumiki dev-impl --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/dev-impl .agents/skills/dev-impl && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .agents/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add classmethod/tsumiki --skill dev-impl -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install classmethod/tsumiki dev-impl --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/dev-impl .cursor/skills/dev-impl && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .cursor/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/classmethod/tsumiki.git --path skills/dev-impl--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add classmethod/tsumiki --skill dev-impl -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install classmethod/tsumiki dev-impl --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/dev-impl .gemini/skills/dev-impl && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .gemini/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install classmethod/tsumiki dev-implInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add classmethod/tsumiki --skill dev-impl -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/dev-impl .github/skills/dev-impl && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .github/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add classmethod/tsumiki --skill dev-impl -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install classmethod/tsumiki dev-impl --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/classmethod/tsumiki.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/dev-impl .opencode/skills/dev-impl && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "dev-impl" agent skill from https://github.com/classmethod/tsumiki/tree/main/skills/dev-impl into .opencode/skills/dev-impl/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-impl", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
dev-implThis skill should be used when the user asks to "dev-impl", "タスクを実装", "テストファースト実装", "implement task", "実装を開始", "クイック修正", "quick fix", "dev-impl auth 001".
Dev Impl is an agent skill from classmethod/tsumiki. This skill should be used when the user asks to "dev-impl", "タスクを実装", "テストファースト実装", "implement task", "実装を開始", "クイック修正", "quick fix", "dev-impl auth 001". TDDをガードレールとしたテストファースト実装を行う。通常モード(Plan+タスク指定)とクイックモード(直接指示)に対応。
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/impl-strategies.md`).
It sits in Testing & QA, covering Test-driven development. It works with Docker. The licence is MIT.
6 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit fa5aaff. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Shell commands in SKILL.md call:
gitdockerFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md. Its commands use git and docker, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Dev Impl loads about 1.3k tokens when it runs, and up to ~3k if it reads all its reference files. Until then it costs about 57 tokens; SKILL.md has 298 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from classmethod/tsumiki at commit fa5aaff, republished under its MIT licence (© classmethod). 298 words, ~1,326 tokens.
.claude/skills/dev-impl/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.TDDをガードレールとして、テストを先に書いてから実装するコアワークフロー。タスクファイルに基づく通常モードと、Plan不要の軽量クイックモードの2つの実行モードを持つ。
dev-context → dev-plan → [dev-impl] → dev-verify
↘ dev-debug (失敗時)| モード | 引数 | 用途 |
|---|---|---|
| 通常モード | <plan-name> <task-id> | Planのタスクを1つ実装 |
| クイックモード | "修正指示" | 軽量な修正・調整(Plan不要) |
品質 > 速度 > トークン消費 の順で判断する。
/dev-impl <plan-name> <task-id> で実行。
インターフェースファーストで必要最小限のファイルだけ読み込む:
優先順位:
1. docs/dev/context.md(プロジェクト全体像)
2. タスクファイル(インターフェース定義・テスト方針)
3. 関連する型定義ファイル ← 必要時のみ
4. 関連する既存テストファイル(パターン参考)← 必要時のみ
5. 実装ファイル(関連関数のみ)← 必要時のみTodoWrite でタスク進捗のトラッキングを開始する。
タスクファイルの Test Strategy に基づきテストコードを生成する:
テストが先に通ってしまう場合は、要件やテストの妥当性を再確認する。
テストを通す最小限の実装を生成する:
/dev-debug の使用を案内するテストがGreenの状態で以下を実行する:
関連するすべてのファイルの行数を Bash で確認する(絶対パスを使用):
wc -l "$(git rev-parse --show-toplevel)/<ファイルの相対パス>"500行を超えるファイルがある場合:
実装コードを確認し、以下の問題がないか検証する:
docs/dev/context.md の Test Framework セクションから Coverage Threshold を取得する[no test files] は 0% として扱うテスト再実行 → 成功維持を確認する。
実装した各ファイルに確信度を付与し、ユーザーに報告する:
## dev-impl 確信度レポート
### カバレッジ結果
| パッケージ | カバレッジ | 閾値 | 結果 |
|-----------|----------|------|------|
| internal/handler | 85.2% | 80% | OK |
### 🔵 前工程指示(レビュー低優先)
- [ファイル名](パス) — 既存パターン準拠
### 🟡 妥当な推測(要確認)
- [ファイル名](パス) — [確認すべき点]
### 🔴 AI推論補完(人間の確認必須)
- [ファイル名](パス) — [判断が必要な理由]status を done に更新するプロジェクトルートに docker-compose.yml または docker-compose.yaml が存在するか確認する。存在する場合:
docker compose down を実行してコンテナを停止する/dev-impl "修正指示" で実行(Plan名なし)。
docs/dev/context.md を読み込む(あれば)タスクファイルの estimated_complexity に応じて戦略を切り替える。詳細は references/impl-strategies.md を参照。
| 複雑度 | 戦略 | テスト+実装 |
|---|---|---|
| low | バッチ生成 | テスト+実装を一括生成し、テスト実行で検証 |
| medium | 標準サイクル | テスト→Red確認→実装→Green確認 |
| high | 段階的 | 1テストずつ追加→1つずつGreenにする |
| 用途 | サブエージェントタイプ | モデル |
|---|---|---|
| 関連コード探索 | Explore | haiku |
| テスト雛形生成 | general-purpose | haiku |
| 標準実装 | メインで実行 | sonnet |
| 複雑なロジック | メインで実行 | opus |
生成するソースコードの各関数・メソッドに、設計判断の理由を示す Intent コメントを付与する。
言語のコメント構文に従い、関数・メソッドの直前に記述する:
// 🔵 Intent: タスクファイルで指定された TodoRepository インターフェースを実装。
// RETURNING 句で INSERT と ID 取得を1クエリで完結させる。
func (r *PostgresTodoRepository) Create(ctx context.Context, todo *model.Todo) error {// 🟡 Intent: context.md のエラーハンドリング規約に準じて fmt.Errorf でラップ。
// リポジトリ層のエラーをサービス層で識別可能にするため。
func (s *TodoService) GetByID(ctx context.Context, id string) (*model.Todo, error) {// 🔴 Intent: ページネーションのデフォルト値。前工程に指定なし。
// 一般的な Web API の慣習に基づき limit=20 を採用。
const defaultPageSize = 20done であることを確認してから開始する/dev-context を案内する/dev-plan を案内する$(git rev-parse --show-toplevel) でルートを取得)references/impl-strategies.md — 複雑度別の実装戦略、インターフェースファースト読み込みの詳細、バッチモードの適用基準© classmethod, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 1 other file (references) in skills/dev-impl of classmethod/tsumiki.
Open the folder on GitHubat commit fa5aaff
Dev Impl next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Dev Impl this skillclassmethod/tsumiki | 974 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Deck Reproasheshgoplani/agent-deck | 1k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Xp Copilotfike/fastapi-blog | 101 | — | ~286 | Automated safety check: Pass | MIT | |
| Security Analyzeraiskillstore/marketplace | 430 | — | ~1.2k | Automated safety check: Notes | None | |
| RalphTheCraigHewitt/skills | 156 | — | ~1k | Automated safety check: Pass | MIT | |
| Django Deployment Test Loophashgraph-online/awesome-codex-plugins | 1.2k | — | ~851 | Automated safety check: Pass | MIT |
asheshgoplani/agent-deck
Reproduce agent-deck bugs from an issue, transcript excerpt, or description in an isolated environment, and prove fixes with the same reproduction and a regression test.
fike/fastapi-blog
Skill for Extreme Programming (XP) practices and Test-Driven Development (TDD).
aiskillstore/marketplace
Comprehensive security vulnerability analysis for codebases and infrastructure.
TheCraigHewitt/skills
Autonomous PRD implementation loop — turns GitHub issues into shipped code using TDD, code review gates, and Docker sandbox isolation.
hashgraph-online/awesome-codex-plugins
Make Django deployment changes test-driven across Docker, production settings, Gunicorn, WhiteNoise/static files, environment variables, Ansible/server setup, staging smoke tests, and release checks.
ChrisWiles/claude-code-showcase
Jest patterns for React Native style tests: TDD discipline, mock factory functions, module and GraphQL hook mocking, custom render helpers and anti-patterns to avoid.
classmethod/tsumiki
This skill should be used when the user asks to "dev-context", "プロジェクトコンテキストを生成", "プロジェクトを分析", "generate project context", "analyze project", "コンテキストを更新".
classmethod/tsumiki
This skill should be used when the user asks to "dev-plan", "実装計画を作成", "要件からタスク分解", "create implementation plan", "plan tasks", "タスクを分割", "設計してタスクにする", "詳細要件定義", "full-spec plan", "EARS要件".
classmethod/tsumiki
This skill should be used when the user asks to "dev-run", "自動実装", "タスクを一括実装", "auto implement", "run all tasks", "タスクを自動実行", "バッチ実装", "dev-run auth 001 005".
classmethod/tsumiki
This skill should be used when the user asks to "dev-screen-spec", "画面仕様を生成", "画面仕様を更新", "screen spec", "generate screen spec", "update screen spec", "画面仕様ドキュメント".
classmethod/tsumiki
This skill should be used when the user asks to "dev-webtest", "Webテスト", "画面の動作確認", "E2Eテスト", "web test", "visual check", "モンキーテスト", "アクセシビリティチェック", "レスポンシブテスト", "フォームテスト".
classmethod/tsumiki
This skill should be used when the user asks to "dev-webtest-plan", "Webテスト計画を生成", "テスト計画を作成", "webtest plan", "E2Eテスト計画", "画面テスト計画", "generate webtest plan", "create test plan from requirements"…
Works with
Categories
This skill should be used when the user asks to "dev-impl", "タスクを実装", "テストファースト実装", "implement task", "実装を開始", "クイック修正", "quick fix", "dev-impl auth 001". Dev Impl is an agent skill from classmethod/tsumiki. This skill should be used when the user asks to "dev-impl", "タスクを実装", "テストファースト実装", "implement task", "実装を開始", "クイック修正", "quick fix", "dev-impl auth 001".
Dev Impl fits situations like: asks to dev-impl; dev-impl auth 001.
Run `npx skills add classmethod/tsumiki --skill dev-impl -a claude-code`. Or copy the skill folder (skills/dev-impl in classmethod/tsumiki) into .claude/skills/dev-impl in your project. Claude Code loads it when a task matches its description.
Run `npx skills add classmethod/tsumiki --skill dev-impl -a codex`. Or copy the skill folder (skills/dev-impl in classmethod/tsumiki) into .agents/skills/dev-impl in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add classmethod/tsumiki --skill dev-impl -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dev-impl, .gemini/skills/dev-impl, .github/skills/dev-impl and .opencode/skills/dev-impl in your project.
Going by SKILL.md and its folder, Dev Impl needs the command-line tools its instructions call (git and docker). Our summary lists: Docker.
SKILL.md contains no URLs. Its commands use git and docker, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Dev Impl is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.3k tokens (SKILL.md is roughly 5.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.6k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Dev Impl: Deck Repro (asheshgoplani/agent-deck, 1k stars), Xp Copilot (fike/fastapi-blog, 101 stars), Security Analyzer (aiskillstore/marketplace, 430 stars) and Ralph (TheCraigHewitt/skills, 156 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
classmethod (a GitHub organization) maintains it in classmethod/tsumiki, which has 974 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on August 7, 2026.
Source: classmethod/tsumiki on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.