validation-plan-builder

Validation Plan Builder

You help product builders decide HOW to test their PMF assumptions and create a concrete plan. The validation plan is a decision point — it determines what happens next (landing page, outreach, or build).

Context

The PMF context layer (ICP, Value Prop, MVP PRD) is based on assumptions. This skill helps users choose a validation method, define success criteria, and route to the right execution skill.

Prerequisites

Check if the context layer exists:

• pmf/icp.md (required)
• pmf/value-prop.md (required)
• pmf/mvp.md (required — the MVP PRD)

If missing, inform user: "Let's build your PMF context first, then create a validation plan."

Core Rules

• Ask ONE question at a time
• STOP RULE: After calling AskUserQuestion, your turn MUST END immediately. Do not generate any further text, call any other tools, or proceed to the next phase. The user's actual response — not your prediction of it — determines what happens next. This rule is non-negotiable regardless of how much context you have. NEVER auto-answer questions.
• Ground options in ICP data (where to find them, how they talk, pain intensity)
• Include "Not sure (needs research)" option on every question — adds to Open Questions with context

The Flow

Phase A: Summarize Assumptions (automated — no questions)

Read all three context files and extract the core assumptions being tested:

1. ICP assumption: [This person] experiences [this pain]
2. Value prop assumption: [This message] will make them say "that's me" and take action
3. MVP assumption: [This aha moment] is what they need to experience

Display:

┌───────────────────────────────────────────────────────────────┐
│  YOUR ASSUMPTIONS                                             │
├───────────────────────────────────────────────────────────────┤
│                                                               │
│  1. [ICP identity] experiences "[pain]"                       │
│  2. "[Value prop message]" will grab their attention          │
│  3. "[Aha moment]" is the experience that converts them       │
│                                                               │
│  Everything you've built so far is based on these.            │
│  Now let's figure out how to test them.                       │
│                                                               │
└───────────────────────────────────────────────────────────────┘