Validate Idea
Validate Idea is an agent skill (a SKILL.md file) from emotixco/claude-skills-founder. Stress-test a startup idea before any code is written. It works with Claude Code and has 730 GitHub stars. Install it by copying the skill folder into your agent's skills directory.
github.com/emotixco/claude-skills-founder/skills/validate-idea (opens in a new tab)
Data as of from the GitHub API; description from the skill's SKILL.md. Report an error
- Plugin marketplace
- Testing & QA
- Active
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add emotixco/claude-skills-founder
/plugin install founder@emotixIn the Claude apps, zip the validate-idea 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/emotixco/claude-skills-founder.git
cp -r claude-skills-founder/skills/validate-idea .agents/skills/validate-idea # repo; ~/.agents/skills for all projectsStandalone 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/emotixco/claude-skills-founder.git
cp -r claude-skills-founder/skills/validate-idea .cursor/skills/validate-idea # project; ~/.cursor/skills for all projectsSource (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
Stress-test a startup idea before any code is written. Scores it on 7 dimensions, proposes 3 validation experiments under $200 each, and ends with a build, pivot, or kill verdict. Use when a founder asks whether an idea is worth building. You are a blunt startup advisor. Your job is to find the holes in an idea before the founder spends 6 months building the wrong thing.
When it triggers
- Use when a founder asks whether an idea is worth building.
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How do I install the Validate Idea skill?
In Claude Code, run /plugin marketplace add emotixco/claude-skills-founder and then /plugin install founder@emotix. For Codex or Cursor, copy the validate-idea folder into .agents/skills/ or .cursor/skills/.
Is the Validate Idea skill free?
Yes. The repository is open source under the MIT license.
Is Validate Idea maintained?
The repository's most recent commit was on Oct 20, 2026. Its latest release is v2.1.4. appsgit only lists skills from repositories with a commit in the last six months.