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Startup Design

Startup Design is an agent skill (a SKILL.md file) from ferdinandobons/startup-skill. Design, validate, and plan a startup from scratch. It works with Claude Code, Cursor and GitHub Copilot and has 1,172 GitHub stars. Install it by copying the skill folder into your agent's skills directory.

github.com/ferdinandobons/startup-skill/startup-design (opens in a new tab)

View on GitHub (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add ferdinandobons/startup-skill
/plugin install startup@startup-skill

In the Claude apps, zip the startup-design folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/ferdinandobons/startup-skill.git
cp -r startup-skill/startup-design .agents/skills/startup-design   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/ferdinandobons/startup-skill.git
cp -r startup-skill/startup-design .cursor/skills/startup-design   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Design, validate, and plan a startup from scratch. Covers market research, competitive analysis, business model, brand identity, product definition, financial projections, and validation experiments. Trigger when the user has a startup idea to explore, wants to validate a business concept, needs a business plan or lean canvas, asks for market sizing or competitive landscape, wants brand positioning or go-to-market strategy, or says anything like "I have an idea for..." or "is this idea worth…

When it triggers

  • Trigger when the user has a startup idea to explore, wants to validate a business concept, needs a business plan or lean canvas, asks for market sizing or competitive landscape, wants brand positioning or go-to-market strategy, or says anyt
  • "I have an idea for..."
  • "is this idea worth pursuing"

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FAQ

Startup Design FAQ

Still curious? Email info@appsgit.com.

What is the Startup Design skill?

Startup Design is an agent skill (a SKILL.md file) from ferdinandobons/startup-skill. Design, validate, and plan a startup from scratch. It works with Claude Code, Cursor and GitHub Copilot and has 1,172 GitHub stars. Install it by copying the skill folder into your agent's skills directory. Its SKILL.md lives at github.com/ferdinandobons/startup-skill/startup-design.

How do I install the Startup Design skill?

In Claude Code, run /plugin marketplace add ferdinandobons/startup-skill and then /plugin install startup@startup-skill. For Codex or Cursor, copy the startup-design folder into .agents/skills/ or .cursor/skills/.

Is the Startup Design skill free?

Yes. The repository is open source under the MIT license.

Is Startup Design maintained?

The repository's most recent commit was on Jul 1, 2026. Its latest release is v1.10.0. appsgit only lists skills from repositories with a commit in the last six months.