# PhAlves23

> Open-source publisher. Listings imported from github.com/PhAlves23 — credited to the original author with their license.

- **Listings:** 1
- **Total installs:** 0
- **Profile:** https://agentstack.voostack.com/s/phalves23
- **Website:** https://github.com/PhAlves23

## Published listings

- [Prompt Engineering](https://agentstack.voostack.com/l/skill-phalves23-prompt-engineering-skill-prompt-engineering) — Skill · Free · security-reviewed — `agentstack add skill-phalves23-prompt-engineering-skill-prompt-engineering`
  Optimizes and rewrites prompts using proven prompt engineering techniques — draft diagnosis, canonical structure (role, context+motivation, sequential instructions, XML, few-shot, chain-of-thought, output contract, success criteria), technique selection by task type and by target model (Claude 4.x, OpenAI reasoning/GPT, Gemini). Use when the user says "/prompt-engineering", "improve this prompt",…

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Seller on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Install any with `agentstack add <slug>`.