---
name: business-idea-validator
description: "Pressure-test a business or side-hustle idea before you sink money and months into it — find the real demand, the risky assumptions, and the cheapest way to test them. Use when asked to validate my business idea, is this a good business idea, test my side hustle, or should I start this. Produces a read on the core assumptions the idea depends on, who the customer really is and whether the pain is real, the cheapest experiments to test demand before building, a rough viability check (market, competition, economics), and a go/refine/rethink call — honest, not a cheerleader."
---

# Business-Idea Validator

Most business ideas fail not from bad execution but from building something nobody wanted — a problem you can catch *before* spending the money. This pressure-tests your idea: it surfaces the assumptions it secretly depends on, checks whether the customer and pain are real, and designs the cheapest experiments to find out — so you validate demand before you build, and get an honest call, not applause.

## What This Skill Produces

- **The core assumptions** — what has to be true for this to work (the customer exists, the pain is real, they'll pay, you can reach them, the economics work)
- **A customer & pain check** — who the real buyer is and whether the problem is painful enough to pay to solve
- **Cheap validation experiments** — the fastest, lowest-cost ways to test demand *before* building (conversations, a landing page, pre-sales, a manual/concierge version)
- **A viability read** — rough market size, competition, and whether the unit economics could work
- **A go / refine / rethink call** — honest, based on the evidence and the riskiest assumptions
- **The riskiest assumption to test first** — where to point your first experiment

## Required Inputs

Ask for these if not provided:
- **The idea** — what it is, who it's for, and the problem it solves
- **The customer** — who you think will pay, and why
- **Your evidence** — any real signal so far (interest, sales, competitors)
- **Your stake** — time/money you'd commit, and your risk tolerance
- **Your goal** — a side hustle, a real business, or just testing the water

## Framework: Test The Assumptions, Cheaply, First

1. **Surface the hidden assumptions.** Every idea rests on beliefs — that a specific customer has a painful problem, will pay, and can be reached affordably. Name them.
2. **Interrogate the customer and pain.** Is the buyer specific and real, and is the pain strong enough that they'll pay? "Nice to have" ideas die here.
3. **Design cheap experiments.** Before building anything, test demand the fast way: talk to real potential buyers, put up a landing page, attempt pre-sales, or run a manual "concierge" version.
4. **Sanity-check viability.** Rough market size, existing competition (its presence can validate demand), and whether the numbers could plausibly work.
5. **Test the riskiest assumption first.** Point the first, cheapest experiment at the thing most likely to kill the idea — don't validate the easy parts.
6. **Give an honest call.** Go, refine (pivot the weak assumption), or rethink — based on evidence, not enthusiasm. Be a critic, not a cheerleader.

## Output Format

### Idea validation: [idea] · for [customer] · stake [x]

**Core assumptions:** [customer exists · pain is real · they'll pay · reachable · economics work].
**Customer & pain:** [who really pays] · pain level: [must-have / nice-to-have].
**Cheapest tests (before building):** [customer conversations · landing page · pre-sale · concierge version].
**Viability:** market [rough] · competition [signal] · economics [plausible?].
**Riskiest assumption to test first:** [x].
**Call:** [go / refine / rethink] — because [evidence].

## Quality Checks
- [ ] Surfaces the idea's hidden assumptions
- [ ] Interrogates whether the customer and pain are real/payable
- [ ] Prescribes cheap experiments before building
- [ ] Includes a rough viability read (market, competition, economics)
- [ ] Identifies the riskiest assumption to test first
- [ ] Gives an honest go/refine/rethink call, not cheerleading

## Anti-Patterns
- **Cheerleading** the idea instead of stress-testing it.
- **Jumping to build** before testing demand.
- **Vague "big market"** with no real customer/pain.
- **Testing the easy assumptions** and ignoring the killer one.
- **Confusing personal excitement** with market demand.

## Example Trigger Phrases
- "Is this a good business idea? Help me validate it."
- "I want to start a side hustle doing X — is there demand?"
- "How do I test my business idea cheaply before committing?"
- "Pressure-test my startup idea honestly."
- "Should I actually start this, or am I kidding myself?"