nickcrew/prompt-engineering
skills/prompt-engineering/SKILL.md
Optimize prompts for LLMs and AI systems with structured techniques, evaluation patterns, and synthetic test data generation. Use when building AI features, improving agent performance, or crafting system prompts.
$ install --global
skillsauthnpx skillsauth add nickcrew/claude-ctx-plugin prompt-engineeringInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 15, 2026, 12:05 PM11.3s3 files scanned
SKILL.md
- name:
- prompt-engineering
- description:
- Optimize prompts for LLMs and AI systems with structured techniques, evaluation patterns, and synthetic test data generation. Use when building AI features, improving agent performance, or crafting system prompts.
Prompt Engineering
Craft, test, and iterate prompts that deliver reliable outputs across LLMs. Covers prompt optimization techniques, structured prompt design, synthetic test data generation, and evaluation methodology.
When to Use This Skill
- Building or optimizing prompts for AI-powered features
- Crafting system prompts for agents or assistants
- Improving reliability and consistency of LLM outputs
- Generating synthetic test data to validate prompt behavior
- Evaluating prompt performance across edge cases
- Designing prompt chains and pipelines
Quick Reference
| Task | Load reference |
| --- | --- |
| Prompt techniques and patterns | skills/prompt-engineering/references/techniques.md |
| Synthetic test data generation | skills/prompt-engineering/references/synthetic-data.md |
Workflow
- Research: Gather the use case, constraints, and evaluation criteria. Audit existing prompts and model behaviors.
- Design: Draft structured prompts with examples, constraints, and evaluation hooks. Plan experiments and measurement strategy.
- Generate test data: Analyze prompt variables, generate diverse and realistic test cases to validate the prompt.
- Validate: Run prompt trials, capture outputs, document adjustments. Iterate until quality thresholds are met.
- Deliver: Hand off the final prompt with usage guidance and evaluation results.
Core Principle
When creating prompts, always display the complete prompt text in a clearly marked section. Never describe a prompt without showing it. The prompt must be copyable and self-contained.
Deliverables Checklist
For every prompt engineering task, produce:
- [ ] The complete prompt text (displayed in full, properly formatted)
- [ ] Explanation of design choices and techniques used
- [ ] Usage guidelines (model, temperature, parameters)
- [ ] Example expected outputs
- [ ] Test cases covering happy path, edge cases, and adversarial inputs
Example Interactions
- "Optimize this system prompt for our code review agent"
- "Create a prompt for extracting structured data from support tickets"
- "Generate test cases to validate this classification prompt"
- "Design a prompt chain for multi-step document analysis"
- "Improve consistency of this summarization prompt"
Related Skills
nickcrew/writing-skills
testing
VerifiedTrustedCommunity
Use when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing, iterating until bulletproof against rationalization
15SKILL.mdUpdated Apr 15, 2026
nickcrew/workflow-security-audit
testing
VerifiedTrustedCommunity
Comprehensive security assessment and remediation. Use for security reviews, compliance checks, vulnerability assessments.
15SKILL.mdUpdated Apr 15, 2026
nickcrew/workflow-performance
research
VerifiedTrustedCommunity
Systematic performance analysis and optimization. Use when things are slow, need optimization, or preparing for scale.
15SKILL.mdUpdated Apr 15, 2026
nickcrew/workflow-feature
development
VerifiedTrustedCommunity
Complete feature development workflow from design to deployment. Use when implementing new features or functionality.
15SKILL.mdUpdated Apr 15, 2026