AI Agent Skill: Code Guardrails for TDD & Quality Assurance

AI Agent Skill: Code Guardrails for TDD & Quality Assurance

The "Code Guardrails for TDD & Quality Assurance" skill is designed to enhance the development process by integrating a set of rules and workflows aimed at promoting test-driven development (TDD) and maintaining high code quality. This skill supports developers and their AI coding agents, such as Claude Code, Cursor, and Codex, by enforcing TDD cycles and quality guardrails before any code implementation or review.

What this skill does

• Enforces the "Golden Rule" of TDD: no production code is written without a failing test first.
• Applies an "Evidence Rule": requires running a command and showing output before making a claim.
• Implements a "Dependency Rule": verifies that new dependencies are essential and cannot be replaced by standard libraries or existing dependencies.
• Follows the London School TDD Cycle: RED (write a failing test), GREEN (write minimal code to pass and re-run), and REFACTOR (clean up code, run tests, and optimize).
• Focuses on well-structured test writing: arrange, act, assert with clear, independent, and repeatable tests.

Who it is for

This skill is beneficial for developers, QA engineers, and software development teams who utilize AI coding agents to enhance productivity and code quality. It assists those aiming to integrate rigorous TDD practices into their workflow.

Use cases

• Software developers integrating TDD into their agile workflows to ensure that new features are backed by robust testing from inception.
• Teams conducting code reviews with AI agents to pre-validate coding practices before implementation begins.
• Engineering managers who want to instill a culture of quality and verifiable outcomes by establishing code guardrails.

Technical details

This skill utilizes AI agent technology compatible with Claude Code, Cursor, and Codex, specifically focusing on the speq-code-guardrails and aiapplication capabilities. It is designed to trigger actions from the implementer-agent and implementer-expert-agent to ensure that quality assurance practices are continuously enforced during development and code review processes.

Source & Licence

This package is built on open-source work published by marconae (marconae/speq-skill) and distributed under MIT. The original licence text and copyright notice are included in your download.

Personal and commercial use, modification and redistribution are permitted, provided the original copyright and licence notice are retained.

Your purchase covers curation, licence verification, packaging, documentation and instant delivery. It does not grant exclusive rights to the underlying open-source code, which remains available under its original licence.

Delivery & Support

• Delivery: instant — a secure download link is emailed to you as soon as payment is confirmed.
• Format: ZIP archive containing the skill files, documentation and the original licence.
• Support: support@mcpcart.com — we aim to reply within 2 business days.
• Updates: updates are included only where stated on this page.

Refunds

This is a digital product delivered immediately after purchase. By completing your order you request immediate delivery and acknowledge that, once the download has been accessed, the statutory right to cancel no longer applies to the extent permitted by law. Refund requests are handled in accordance with our published Refund Policy.

Claude, Codex, Gemini and Cursor are trademarks of their respective owners. MCP Cart is an independent marketplace and is not affiliated with, endorsed by, or sponsored by any of them. Compatibility references describe interoperability only.