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AI Agent System Prompt Architect for Claude & Codex

AI Agent System Prompt Architect for Claude & Codex

Regular price £13.99
Regular price £13.99 Sale price
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Works withClaude CodeCursorCodexGemini CLI
AI Agent System Prompt Architect for Claude & Codex

AI Agent System Prompt Architect for Claude & Codex

Regular price £13.99
Regular price £13.99 Sale price
SAVE Sold out

AI Agent System Prompt Architect for Claude & Codex

The AI Agent System Prompt Architect skill designs, reviews, and revises deployable system prompts specifically tailored for AI agent projects. This skill assists users in creating clear and effective prompts for agents such as Claude Code and Codex, ensuring structured role definitions, task boundaries, and tool-use rules.

What this skill does

  • Transforms partial agent requirements into fully deployable system prompts.
  • Handles requests for writing, improving, reviewing, or debugging agent prompts.
  • Supports schema-driven prompt designs, including outputting structured data formats like JSON.
  • Focuses on defining agent roles, task boundaries, evidence management, and output format.
  • Excludes handling of one-off chat prompts or general prompt-engineering queries.

Who it is for

  • Developers working with AI coding agents like Claude Code, Cursor, and Codex.
  • Teams in need of consistent and effective prompt design for agent interactions.
  • Organisations requiring structured and clear system messages for their AI projects.

Use cases

  • Creating structured and concise prompts for AI agents tasked with specific roles.
  • Establishing clear task boundaries and operational rules within AI systems.
  • Ensuring agents output consistent, schema-compliant data, such as JSON structures.
  • Reviewing and optimizing existing system prompts for improved clarity and function.

Technical details

  • Compatible with agent-skills and AI application integrations.
  • Focused on agent system prompt architecture within Claude Code, Cursor, and Codex environments.
  • Utilizes labels and schema field names for efficient prompt management.

Source & Licence

This package is built on open-source work published by CR-730 (CR-730/agent-system-prompt-architect-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.

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Reviews

Trusted by Developers & Marketers

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

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

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

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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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