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    prompt-engineer-pro

    by Roy Yuen

    Professional prompt engineering, audit, and evaluation system for production-grade AI agents and workflows.

    Updated May 2026
    110 views
    Security scanned

    $8

    One-time purchase

    ⚡ Also available via Agensi MCP — your AI agent can load this skill on demand via MCP. Learn more →

    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
    • Includes example output and usage patterns
    • Instant install

    See it in action

    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.

    📖 Learn more: Best Testing & QA Skills for Claude Code →

    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

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    Security Scanned

    Passed automated security review

    Permissions

    Read Files
    Write Files

    File Scopes

    prompt-engineer-pro/**

    Tags

    prompt-engineering
    llm-ops
    ai-agents
    testing
    governance

    Creator

    Roy Yuen

    Frequently Asked Questions

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