julien-skills
Julien's personal Claude Code skill collection — coaching, slides, design, product validation, and indie founder tools.
What are Skills?
Skills are folders of instructions that AI agents load dynamically to improve performance on specialized tasks. Each skill is self-contained with a SKILL.md file containing a system-prompt-style persona and workflow.
For more on the standard, see agentskills.io.
Skills
| Skill | Description |
|---|
| nvc-coach | Non-Violent Communication coach — reformulate messages with empathy, coach on situations, or reflect on past interactions. Based on Marshall Rosenberg's NVC framework. |
| impactful-slides | McKinsey-style slide coach — structured deck review using 7 principles: titles-only test, mental model assessment, bridge analysis, and priority rewrites. |
| logo-designer | SVG logo designer — generates multiple logo concepts and layout variations (horizontal, vertical, icon-only) with color palette recommendations. |
| validate-app-idea | App idea validator — evaluates whether an idea is worth building using the painkiller/vitamin/candy framework and 3 market validation questions. |
| slc-scope | MVP scoper — cuts feature scope using the SLC (Simple, Lovable, Complete) framework to ship the smallest version that delivers real value. |
| landing-page-builder | Landing page coach — builds or reviews high-conversion pages using the three pillars: copywriting, design, and social proof. |
| app-launch-marketing | Launch marketing advisor — creates realistic marketing plans covering organic Reddit, Product Hunt, social content, and paid ads for solo founders. |
| video-to-skills | Skill extractor — analyzes a video transcript and creates reusable Claude Code skill files from the teachable frameworks it contains. |
Installation
Claude Code Plugin Marketplace
# Add this marketplace
/plugin marketplace add jlengrand/my-skills
# Install a specific skill
/plugin install nvc-coach@julien-skills
/plugin install impactful-slides@julien-skills
/plugin install logo-designer@julien-skills
/plugin install validate-app-idea@julien-skills
/plugin install slc-scope@julien-skills
/plugin install landing-page-builder@julien-skills
/plugin install app-launch-marketing@julien-skills
/plugin install video-to-skills@julien-skills
Universal install (npx)
# Install all skills
npx skills add jlengrand/my-skills
# Install a specific skill
npx skills add jlengrand/my-skills --skill nvc-coach
npx skills add jlengrand/my-skills --skill impactful-slides
npx skills add jlengrand/my-skills --skill logo-designer
npx skills add jlengrand/my-skills --skill validate-app-idea
npx skills add jlengrand/my-skills --skill slc-scope
npx skills add jlengrand/my-skills --skill landing-page-builder
npx skills add jlengrand/my-skills --skill app-launch-marketing
npx skills add jlengrand/my-skills --skill video-to-skills
Structure
skills/
nvc-coach/
.claude-plugin/plugin.json
SKILL.md
impactful-slides/
.claude-plugin/plugin.json
SKILL.md
logo-designer/
.claude-plugin/plugin.json
SKILL.md
validate-app-idea/
.claude-plugin/plugin.json
SKILL.md
slc-scope/
.claude-plugin/plugin.json
SKILL.md
landing-page-builder/
.claude-plugin/plugin.json
SKILL.md
app-launch-marketing/
.claude-plugin/plugin.json
SKILL.md
video-to-skills/
SKILL.md
.claude-plugin/
marketplace.json
skills.json
Each skill is a single markdown file with YAML frontmatter (name, description) followed by system-prompt-style instructions.
Author
Julien Lengrand-Lambert — github.com/jlengrand
