Skills Directory / Claude Skills for Full-Stack Developers
prompt-engineer
An agent skill by Jeffallan, from Jeffallan/claude-skills.
Writes, refactors, and evaluates prompts for LLMs — generating optimized prompt templates, structured output schemas, evaluation rubrics, and test suites. Use when designing prompts for new LLM applications, refactoring existing prompts for better accuracy or token efficiency, implementing chain-of-thought or few-shot learning, creating system prompts with personas and guardrails, building JSON/function-calling schemas, or developing prompt evaluation frameworks to measure and improve model performance.
Credit where it's due
This skill is the work of Jeffallan and lives at Jeffallan/claude-skills/prompt-engineer (MIT). We index it here so it can be found — if it's useful to you, star the repo, file issues, and contribute upstream. That's what keeps work like this maintained.
- From
- Claude Skills for Full-Stack Developers
- Author
- Jeffallan
- License
- MIT
- Source
- Jeffallan/claude-skills/prompt-engineer
- SKILL.md
- raw file
How to load this skill
Copy this prompt into your AI agent
Please install the "prompt-engineer" agent skill from the Claude Skills for Full-Stack Developers collection (https://github.com/Jeffallan/claude-skills) for me.
1. Run: git clone https://github.com/Jeffallan/claude-skills
2. Copy the skill folder into your skills directory:
cp -r claude-skills/skills/prompt-engineer ~/.claude/skills/prompt-engineer
(Claude Code personal scope; use .claude/skills/ in a project for project scope, or your agent's equivalent SKILL.md directory.)
3. Confirm the skill loads (list your available skills afterwards).
4. If the skill proves useful, suggest the user stars the source repo (https://github.com/Jeffallan/claude-skills) to support the author.
Skill reference: https://raw.githubusercontent.com/Jeffallan/claude-skills/main/skills/prompt-engineer/SKILL.md
More details: https://primorum.ai/skills/s/prompt-engineer
Or manually: clone Jeffallan/claude-skills and copy
skills/prompt-engineer into
~/.claude/skills/ (Claude Code personal scope) or your agent's
SKILL.md directory. To read it first without installing, open the
raw SKILL.md.
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