AI Feature Evaluation Harness for Claude & Codex Agents

AI Feature Evaluation Harness for Claude & Codex Agents

The AI Feature Evaluation Harness is a comprehensive tool designed specifically for evaluating AI features in Claude and Codex agents. It systematically constructs evaluation plans with measurable success criteria and persistently stores them for use during product deployments or feature updates involving model-generated or non-deterministic outputs.

What this skill does

• Designs evaluation plans with specified measurable success criteria for AI features.
• Creates a held-out labeled evaluation dataset shape for structured testing of outputs.
• Implements per-criterion grading which begins with code-based assessments, followed by LLM-based assessments for more nuanced judgment.
• Sets a pass threshold to ensure repeatable and objective evaluations of AI features.
• Stores the evaluation plan as AI_EVAL_PLAN.md which can be used when AI tasks ship or feature changes occur.
• Avoids being applied when the feature lacks model-backed output, relying instead on deterministic test strategies.
• Operates as a Layer-1 evidence provider with deterministic gates using ADR-0048 in conjunction with the code-based grading tier.

Who it is for

This skill is intended for developers and teams who are integrating or evaluating AI coding agents such as Claude Code, Cursor, and Codex. It is especially valuable for those requiring structured evaluation methods for model-generated outputs to ensure consistent and reliable agent performance.

Use cases

• Developing an AI feature that outputs model-generated responses such as text classification, extraction, or summarization.
• Releasing an updated version of an AI agent skill where changes in output require rigorous evaluation before deployment.
• Ensuring repeatable assessments for AI features in environments where example-based tests are insufficient.

Technical details

• Utilizes agent-skills, aiapplication, and ai-feature-eval-harness capabilities.
• Supports integration with Claude Code, Cursor, and Codex agents for enhanced evaluation processes.

Source & Licence

This package is built on open-source work published by Mozurok (Mozurok/fhorja.dev) 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.