idea-validation · c0x12c — Claude Code skill: what it does, how to install
This skill runs a critical validation check on startup concepts before you code: it scans competitors, evaluates market signals, and issues a go or pass verdict.
npx skills add c0x12c/ai-toolkit --skill idea-validation -a claude-codeWhat idea-validation does
The agent evaluates a startup step by step. First, it isolates the customer problem and searches online forums for real complaints. It scans 5 to 10 competitors, inspecting their pricing tiers and 1-star reviews. Market size is estimated with an explicit calculation rather than arbitrary claims.
The dialogue ends with a clear call: GO, TEST MORE, or PASS. The agent identifies the single largest risk and recommends the most affordable experiment to run next. Outputs are stored inside the 03-validation/ folder. The skill can also consult frameworks like Lean Canvas or The Mom Test.
Without WebSearch and WebFetch, this evaluation falls flat. Real feedback from forum posts and current rival pricing are necessary to keep the review objective.
What it helps with
- Identify direct and indirect competitors alongside their lowest customer ratings
- Calculate total addressable market with concrete math instead of guesses
- Gauge whether a minimum viable product can be built in two weeks
- Receive an unbiased verdict highlighting the primary risk before spending money
Example prompts for the agent
- Stress test my startup concept for a freelance subscription tracker before I start coding
- Analyze competitors and market demand for a B2B reporting micro-SaaS
- Help me validate whether people actually pay for a local darkroom rental service
How to install idea-validation
1Skills CLI (Vercel)
npx skills add c0x12c/ai-toolkit --skill idea-validation -a claude-code2Manually: put the files in place
~/.claude/skills/idea-validation/SKILL.mdCopy the whole skill folder; for one project use .claude/skills/idea-validation/
1Skills CLI (Vercel)
npx skills add c0x12c/ai-toolkit --skill idea-validation -a codex2Manually: put the files in place
.agents/skills/idea-validation/SKILL.mdFor all projects use ~/.agents/skills/
1Skills CLI (Vercel)
npx skills add c0x12c/ai-toolkit --skill idea-validation -a cursor2Manually: put the files in place
.cursor/skills/idea-validation/SKILL.mdCursor also reads .agents/skills/ and .claude/skills/
1GitHub CLI
gh skill install c0x12c/ai-toolkit idea-validation2Manually: put the files in place
.github/skills/idea-validation/SKILL.md1Skills CLI (Vercel)
npx skills add c0x12c/ai-toolkit --skill idea-validation -a gemini-cli2Platform CLI
gemini skills install https://github.com/c0x12c/ai-toolkit --path toolkit/skills/idea-validationManually: put the files in place
.devin/skills/idea-validation/SKILL.mdThe legacy .windsurf/skills/ path still works
Skills CLI (Vercel)
npx skills add c0x12c/ai-toolkit --skill idea-validation -a opencodeClaude.ai
Zip the folder and upload it in Settings → Capabilities → Skills
Step by step, with commands for each platform: How to install skills in Claude Code: five ways
Questions about idea-validation
How do I install idea-validation in Claude Code?
Run npx skills add c0x12c/ai-toolkit --skill idea-validation -a claude-code in your terminal.
What does the idea-validation skill do?
It evaluates a startup concept by analyzing 5–10 competitors, calculating market demand, assessing distribution channels, and issuing a GO, TEST MORE, or PASS verdict.
Which tools does idea-validation require?
It uses WebSearch and WebFetch to locate real forum complaints and competitor pricing, and Read to check local framework files.
Similar skills
All skills for Finance and business →idea-validation by other authors comes first.