Does it work with existing task management systems?

Yes, it can parse Task IDs to retrieve acceptance criteria directly from your project's task list and use them as the basis for the TDD cycle.

Which testing frameworks are supported?

The skill features a detection chain that automatically supports pytest for Python, and Jest or Vitest for JavaScript and TypeScript projects.

Is the workflow fully autonomous?

After the initial plan is presented and confirmed by the user, the skill runs through the RED, GREEN, and REFACTOR phases without requiring further prompts.

How does it handle existing tests in the project?

It takes a baseline snapshot of current test results before starting to ensure that new implementations do not cause regressions in existing functionality.

What does the TDD Cycle skill do?

It automates the Test-Driven Development process within Claude Code by writing tests before implementation, ensuring they fail, writing the minimal code to pass them, and then refactoring for quality.

TDD Cycle

Name: TDD Cycle
Author: sequenzia

bysequenzia

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セキュリティとテスト

Automates the complete Red-Green-Refactor Test-Driven Development workflow for features, tasks, or specifications.

The TDD Cycle skill transforms Claude into a disciplined test-driven developer by managing the entire engineering lifecycle autonomously. It begins by analyzing feature descriptions, Task IDs, or technical specifications to generate a comprehensive testing plan. Once the user confirms the strategy, the skill executes the full TDD loop: writing failing tests (RED), implementing the minimal code required to pass (GREEN), and optimizing the solution (REFACTOR) while ensuring zero regressions. This standardized approach guarantees high code quality, behavioral correctness, and project-aligned architecture with minimal manual oversight.

主な機能

01Project-level convention awareness via CLAUDE.md integration

02Autonomous Red-Green-Refactor workflow execution

03Baseline regression protection through automated test state snapshots

04Support for multi-source inputs including free-text, Task IDs, and spec files

05Automatic framework detection for Python (pytest) and JS/TS (Jest/Vitest)

0622 GitHub stars

ユースケース

01Implementing new features from scratch using strict test-first principles

02Executing technical debt tasks by retrofitting existing code with unit tests

03Developing complex logic directly from technical specifications or acceptance criteria

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add sequenzia/agent-alchemy tdd-cycle

For use in Claude.ai and ChatGPT

Download Skill