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Master AI Agent Skills: Create & Improve with Eval-First

Master AI Agent Skills: Create & Improve with Eval-First

Regular price £21.99
Regular price £21.99 Sale price
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Works withClaude CodeCursorCodex
Master AI Agent Skills: Create & Improve with Eval-First

Master AI Agent Skills: Create & Improve with Eval-First

Regular price £21.99
Regular price £21.99 Sale price
SAVE Sold out

Master AI Agent Skills: Create & Improve with Eval-First

The "Master AI Agent Skills: Create & Improve with Eval-First" utility assists developers by authoring or refining a single Agent Skill using the eval-first workflow. Designed to scope a specific purpose, it writes trigger evaluations, drafts SKILL.md, validates, and iterates the skill development process, offering structure and consistency.

What this skill does

  • Scopes the skill accurately, ensuring it addresses a specific failure in AI behaviour with distinct invocation modes.
  • Writes trigger evaluations to determine when the skill should activate.
  • Drafts a detailed SKILL.md file to document the skill's purpose and functionality.
  • Performs validation to ensure the skill works correctly before iteration.
  • Iterates until the skill reaches production quality, ready for deployment.
  • Consults dedicated documentation manuals, "docs/skill-authoring.md" and "docs/evals.md", guiding the entire process.

Who it is for

  • Developers enhancing AI agent capabilities with new or improved skills.
  • Technical teams working with AI coding agents like Claude Code, Cursor, or Codex.
  • Project managers overseeing AI integration projects and requiring production-quality AI functionalities.

Use cases

  • A developer creating a new AI skill for handling specific user queries that current agents misinterpret.
  • Teams refining existing skills to improve accuracy in trigger recognition and response actions.
  • Project managers seeking a structured workflow for skill development to ensure consistent quality output.

Technical details

  • Utilizes the eval-first workflow for skill development.
  • Incorporates agent-skills, aiapplication, and add-skill capabilities.
  • Ensures compliance with detailed documentation: "docs/skill-authoring.md" and "docs/evals.md".
  • Supports interaction with AI coding environments: Claude Code, Cursor, and Codex.

Source & Licence

This package is built on open-source work published by Paldom (Paldom/python-skills) 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.

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Reviews

Trusted by Developers & Marketers

Here's what buyers say about the skills they use every day.

Ran it on a client's Google Ads account and it flagged wasted spend we'd been missing for months. Paid for itself on day one.

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James T.
PPC Specialist, UK

We finally caught broken conversion tags before launch instead of after. The pre-launch checklist alone is worth the price.

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Sofia M.
Growth Marketer

Dropped it into Claude Code and my LCP went from 4.1s to 1.9s in an afternoon. It explains every fix it suggests, so I actually learned something too.

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Daniel K.
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Our agency uses it as the final review step on every PR now. It catches security issues our linters never did.

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Priya R.
Tech Lead

Made WCAG 2.2 compliance actually manageable. It walked through our whole storefront and produced a fix list our devs could work from directly.

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Laura B.
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As an expat freelancer in France, the DGFIP simulation saved me a very expensive appointment with an accountant. Incredibly thorough.

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Mark D.
Freelance Consultant, Paris

Works with both Cursor and Claude Code exactly as advertised. Setup took less than five minutes with the included README.

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Anna W.
E-commerce Manager

Instant delivery, clean files, clear docs. This is how digital products should be sold. Already bought three more skills.

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Thomas L.
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Support answered my install question within a couple of hours on a Sunday. The skill itself has become part of my daily workflow.

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Yuki S.
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