Agent skill

TDD

by selmakcby in selmakcby/claude-agents-skills

Test-Driven Development workflow. An agent skill from selmakcby/claude-agents-skills.

MITAuto-check passedTesting & QA

Install TDD

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/tdd .claude/skills/tdd && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .claude/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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

$skill-installer install https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd

Type 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.

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/tdd .agents/skills/tdd && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .agents/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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.

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/tdd .cursor/skills/tdd && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .cursor/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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

$ gemini skills install https://github.com/selmakcby/claude-agents-skills.git --path skills/tdd

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/tdd .gemini/skills/tdd && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .gemini/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd

Installs 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).

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/tdd .github/skills/tdd && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .github/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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.

skills CLI

$ npx skills add selmakcby/claude-agents-skills --skill tdd -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install selmakcby/claude-agents-skills tdd --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/selmakcby/claude-agents-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/tdd .opencode/skills/tdd && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "tdd" agent skill from https://github.com/selmakcby/claude-agents-skills/tree/main/skills/tdd into .opencode/skills/tdd/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "tdd", 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.

Facts

Skill name: tdd
GitHub stars: 136
Token cost: ~323 tokens
SKILL.md length: 136 words
Files: 1
Skills in repo: 8
Repo updated: Apr 21, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Test-Driven Development workflow. An agent skill from selmakcby/claude-agents-skills.

Works in 3 steps: RED — Önce başarısız test yaz → GREEN — Minimum kodu yaz → REFACTOR — Temizle
Writing new features
SKILL.md covers Ne zaman tetiklenir, RED — GREEN — REFACTOR, Kapsam hedefleri and Kurallar
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

TDD is an agent skill from selmakcby/claude-agents-skills. Test-Driven Development workflow. Use when writing new features, fixing bugs, or refactoring code. Enforces RED-GREEN-REFACTOR cycle with 80%+ coverage.

Its SKILL.md is about 320 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Test-driven development. The repository describes itself as: Multi-Agent Claude Code setup — 4 uzman ajan (planner · ui-agent · builder · reviewer) + skills + Next.js demo projesi. YouTube Bölüm 1 video materyalleri. The licence is MIT.

When your agent uses it

Writing new features
Refactoring code

Example prompts

“/tdd”

Workflow steps

3 steps, taken from the step headings in SKILL.md.

RED — Önce başarısız test yaz
GREEN — Minimum kodu yaz
REFACTOR — Temizle

What it can do on your machine

Read from SKILL.md and the folder at commit ddcfb0c. It shows what the files ask for, not the result of running them.

Tool permissions
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.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

TDD loads about 323 tokens when it runs. Until then it costs about 39 tokens; SKILL.md has 136 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~39
When it runs · the whole SKILL.md, loaded when a task matches: ~323

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.

Safety

Auto-check passed

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.

SKILL.md

The full file from selmakcby/claude-agents-skills at commit ddcfb0c, republished under its MIT licence (© selmakcby). 136 words, ~323 tokens.

Download SKILL.mdSave it as .claude/skills/tdd/SKILL.md (or your agent's skills folder).

name: tdd
description: Test-Driven Development workflow. Use when writing new features, fixing bugs, or refactoring code. Enforces RED-GREEN-REFACTOR cycle with 80%+ coverage.

TDD — Test-Driven Development

Ne zaman tetiklenir

Yeni özellik yazıldığında
Bug fix öncesi (hatayı üreten test ilk yazılır)
Refactor sırasında (mevcut testler yeşil kalmalı)

RED — GREEN — REFACTOR

1. RED — Önce başarısız test yaz

Yeni davranışı test olarak yaz
Testi çalıştır, başarısız olduğunu gör
Başarısız olmazsa, test gerçekten bir şey ölçmüyor demektir

2. GREEN — Minimum kodu yaz

Testi geçiren en az kodu yaz
Güzel olmasına çalışma, sadece geçsin
Testin geçtiğini doğrula

3. REFACTOR — Temizle

Kod çalışıyor, şimdi netleştir
Testler yeşil kalmalı
İsim düzelt, duplication kaldır, fonksiyonları böl

Kapsam hedefleri

Genel kod: %80+ coverage
Kritik: auth, ödeme, güvenlik → %100 coverage
Test türleri (hepsi gerekli):
- Unit (fonksiyon/utility)
- Integration (API, DB)
- E2E (kritik kullanıcı akışları)

Kurallar

Önce test, sonra kod. İstisnasız.
Test başarısız olursa kodu düzelt — testi düzeltme
Tüm dış bağımlılıkları mock'la (DB, API'ler, 3. parti)
Testler bağımsız olmalı (state paylaşmamalı)

Files

Just SKILL.md in skills/tdd of selmakcby/claude-agents-skills.

Open the folder on GitHubat commit ddcfb0c

Compare with similar skills

TDD 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.

TDD compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
TDD this skillselmakcby/claude-agents-skills	136	—	~323	Automated safety check: Pass	MIT	5 mo ago
TDDpietheinstrengholt/rssmonster	564	30 repos	~906	Automated safety check: Pass	MIT	yesterday
TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph	112	11 repos	~2.4k	Automated safety check: Pass	None	8 mo ago
TDDsanity-io/sanity	6.4k	20 repos	~1k	Automated safety check: Pass	MIT	today
Test Driven Developmentfarm-fe/farm	5.6k	51 repos	~2.5k	Automated safety check: Pass	MIT	17 days ago
Tapd Story PipelineTencentBlueKing/bk-bcs	841	—	~2.6k	Automated safety check: Pass	Custom licence	yesterday

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Testing & QAAuto-check passed
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Absolute Init
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Questions about TDD

What does TDD do?

Test-Driven Development workflow. An agent skill from selmakcby/claude-agents-skills. TDD is an agent skill from selmakcby/claude-agents-skills. Test-Driven Development workflow.

When should I use TDD?

TDD fits situations like: writing new features; refactoring code.

How do I install TDD in Claude Code?

Run `npx skills add selmakcby/claude-agents-skills --skill tdd -a claude-code`. Or copy the skill folder (skills/tdd in selmakcby/claude-agents-skills) into .claude/skills/tdd in your project. Claude Code loads it when a task matches its description.

How do I install TDD in Codex?

Run `npx skills add selmakcby/claude-agents-skills --skill tdd -a codex`. Or copy the skill folder (skills/tdd in selmakcby/claude-agents-skills) into .agents/skills/tdd in your project. Codex loads it when a task matches its description.

Can I use TDD in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add selmakcby/claude-agents-skills --skill tdd -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tdd, .gemini/skills/tdd, .github/skills/tdd and .opencode/skills/tdd in your project.

What does TDD need to run?

SKILL.md names no scripts, command-line tools or credentials: TDD is instructions for the agent only.

Does TDD access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is TDD safe to install?

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.

What licence does TDD use?

TDD is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does TDD use?

About 323 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to TDD?

Skills that share tags, products or a category with TDD: TDD (pietheinstrengholt/rssmonster, 564 stars), TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars), TDD (sanity-io/sanity, 6.4k stars) and Test Driven Development (farm-fe/farm, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains TDD?

selmakcby (a GitHub user) maintains it in selmakcby/claude-agents-skills, which has 136 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on April 21, 2026.

Source: selmakcby/claude-agents-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install TDD

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

TDD — Test-Driven Development

Ne zaman tetiklenir

RED — GREEN — REFACTOR

1. RED — Önce başarısız test yaz

2. GREEN — Minimum kodu yaz

3. REFACTOR — Temizle

Kapsam hedefleri

Kurallar

Files

Compare with similar skills

Similar skills

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Questions about TDD