How does this skill help with agent 'rationalization'?

It includes specific strategies for testing if an agent will try to bypass rules under pressure and provides patterns for writing 'iron law' prompts that close those loopholes.

What is the RED-GREEN-REFACTOR cycle in prompt testing?

It involves testing a scenario without the prompt to see it fail (RED), writing the minimal prompt needed to fix the failure (GREEN), and then optimizing the prompt for clarity and tokens (REFACTOR).

What types of prompts can I test with this skill?

You can test any prompt type, including instruction-based commands, discipline-enforcing hooks, technical guidance skills, and reference documentation prompts.

Why should I use subagents for testing prompts?

Subagents provide isolation and a clean slate, ensuring that the agent's behavior is driven strictly by your prompt rather than previous messages in the chat history.

Prompt TDD & Subagent Testing

Name: Prompt TDD & Subagent Testing
Author: NeoLabHQ

byNeoLabHQ

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542

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Seguridad y Pruebas

Applies the RED-GREEN-REFACTOR TDD cycle to prompt engineering using isolated subagents for reliable behavior verification.

The test-prompt skill transforms prompt engineering into a disciplined, test-driven process. By leveraging isolated subagents as 'clean slate' test environments, it allows developers to establish baselines (RED phase), implement minimal prompt fixes (GREEN phase), and optimize instructions (REFACTOR phase) without the bias of existing conversation history. This methodology is essential for building complex Claude Code commands, discipline-enforcing hooks, or production-grade LLM instructions where reliability, consistency, and token efficiency are paramount.

Características Principales

01Scenario design patterns for instruction, discipline, and reference prompts

02RED-GREEN-REFACTOR workflow tailored for LLM instructions

03Loophole detection and rationalization countering for agent behavior

04Meta-testing strategies to improve prompt clarity and reduce token costs

05Isolated subagent testing to eliminate conversation history bias

06542 GitHub stars

Casos de Uso

01Verifying a new Git workflow command before deploying it to a team

02A/B testing different prompt variations to find the most token-efficient version

03Testing discipline-enforcing skills to ensure agents don't skip mandatory steps

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add neolabhq/context-engineering-kit test-prompt

For use in Claude.ai and ChatGPT

Download Skill