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Updated 1w ago

by treylom

prompt-engineering-skills

Comprehensive AI prompt engineering skills for Claude Code, ChatGPT (GPTs & Codex CLI plugin), and Gemini Gems. Model-specific patterns for Claude Opus 5.5 / Fable 5.1 (Opus 5 / Opus 4.8 legacy), GPT-6 Sol · Luna · Astra (GPT-5.6 Sol legacy), Gemini 3.1, Veo 3.1, Nano Banana 2, and gpt-image-2.

  • Active — Updated in the last 14 days
  • Multi-agent — Targets three or more agents
Works with
  • Claude
  • Codex
  • Gemini

185 GitHub stars (185)

Steady at 185 stars — no new stars in the 8 days since Sep 30.

  • 10 skills (10 skills found in its SKILL.md files)
  • 33 forks (33 forks)
  • 1w ago last update (Last updated 1w ago)

Install

Skills CLI

npx skills add treylom/prompt-engineering-skills

Asks which skills and agents to install. Just one: npx skills add treylom/prompt-engineering-skills --skill gems-prompt-generator — add -g for every project.

Claude Code

git clone https://github.com/treylom/prompt-engineering-skillscp -r "prompt-engineering-skills/instructions/Gems-Prompt-Generator" ~/.claude/skills/

Copies the gems-prompt-generator skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.

Plugin

/plugin marketplace add treylom/prompt-engineering-skills

Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.

Skills can run code on your machine — read the SKILL.md first.

What it does

In the author's own words, from each skill's SKILL.md.

Review before you install

A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.