Prompt Engineer Pro
by Roy Yuen
Professional prompt engineering, audit, and evaluation system for production-grade AI agents and workflows.
- Migrate prompt stacks between OpenAI and Anthropic without breaking logic
- Harden structured JSON outputs for reliable downstream API automation
- Design tool-use policies to prevent agents from taking unauthorized actions
$8
· or 40 creditsSecure checkout via Stripe
Included in download
- Migrate prompt stacks between OpenAI and Anthropic without breaking logic
- Harden structured JSON outputs for reliable downstream API automation
- file_read, file_write automation included
- Ready for Claude Code
See it in action
You say
Audit my customer support agent's prompt. It failing to extract JSON from long transcripts, and I need a fix that improves the parse rate without breaking the classification accuracy.
Your agent does
AUDIT FINDING: Brittle JSON Extraction ROOT CAUSE: Input nesting exceeding 3 levels causing token attention drift. REWRITE: Moved extraction policy to system header; simplified schema. EVAL: Re-run of 50 tests shows 100% parse rate (up from 72%). No regressions in classification accuracy.
Prompt Engineer Pro
by Roy Yuen
Professional prompt engineering, audit, and evaluation system for production-grade AI agents and workflows.
$8
· or 40 creditsSecure checkout via Stripe
Included in download
- Migrate prompt stacks between OpenAI and Anthropic without breaking logic
- Harden structured JSON outputs for reliable downstream API automation
- file_read, file_write automation included
- Ready for Claude Code
- Instant install
See it in action
You say
Audit my customer support agent's prompt. It failing to extract JSON from long transcripts, and I need a fix that improves the parse rate without breaking the classification accuracy.
Your agent does
AUDIT FINDING: Brittle JSON Extraction ROOT CAUSE: Input nesting exceeding 3 levels causing token attention drift. REWRITE: Moved extraction policy to system header; simplified schema. EVAL: Re-run of 50 tests shows 100% parse rate (up from 72%). No regressions in classification accuracy.
About This Skill
What it does
Prompt Engineer Pro is a production-grade system for teams shipping AI workflows into business-critical environments. Unlike basic prompting assistants, this skill treats prompts as software assets that require governance, audit trails, and regression testing. It helps you build, audit, and harden prompt stacks for complex tasks involving multiple models, tool-use agents, and structured data extraction.
Why use this skill
Engineering prompts for production requires more than just "good phrasing." This skill provides a structured framework for handling provider migrations (e.g., GPT-4 to Claude 3.5), hardening JSON/XML output contracts, and designing tool-call policies that prevent agent hallucinations. It moves your workflow from "trial and error" to an evidence-based evaluation harness.
Key Capabilities
- Prompt Audits: Identifies root-cause failures in existing prompt stacks and provides prioritized fixes.
- Structured-Output Hardening: Ensures prompts reliably feed downstream APIs and automation.
- Provider Migration: Manages the transition between model families without silent regressions.
- Tool-Call Policy Design: Establishes clear decision rules and safety boundaries for agentic actions.
- Evaluation & Triage: Sets up regression gates and release conditions to ensure launch readiness.
The output is not just a rewritten prompt; it is a professional audit memo, a prioritized failure taxonomy, and a verified test plan designed for engineering teams.
Use Cases
- Migrate prompt stacks between OpenAI and Anthropic without breaking logic
- Harden structured JSON outputs for reliable downstream API automation
- Design tool-use policies to prevent agents from taking unauthorized actions
- Establish release gates and evaluation rubrics for production AI deployments
- Triage and fix prompt regressions after model provider updates
Known Limitations
- Focuses on prompt-layer logic, not model weights or fine-tuning datasets.
- Cannot fix fundamental model intelligence gaps or context window physical limits.
How to install
Drop the file into your AI tool. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Early access skill
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Security Scanned
Passed automated security review
Permissions
File Scopes
Claude Code, GitHub Copilot, Cursor, and SKILL.md-compatible agents.
Frequently Asked Questions
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