Unit Economics Builder

Purpose

Model unit economics from stated assumptions.

Deliverable: An assumption table and the arithmetic those assumptions support.

Inputs

Required

• Price
• Variable cost

Optional

• Customers
• CAC
• Churn rate

Method

1. 01Read currency figures and percents you typed. Do not convert currencies.
2. 02Gross profit and gross margin need both price and variable cost.
3. 03A lifetime figure is computed only if you also typed a churn percent, and it is labelled as constant-rate arithmetic.
4. 04Leave every missing input blank.

Evidence

A run uses the text you submit. It does not browse, and it does not open links you paste.

• Do not: Invent revenue.
• Do not: Present the model as a forecast or as financial advice.

Planning support only. Not regulated financial, tax, legal, or medical advice.

Quality checks

• Every result shows the inputs used.
• No benchmark margin is introduced.

---
name: unit-economics-builder
description: Computes margin only from numbers you type, and shows the formula beside the result.
---

# Unit Economics Builder

## Purpose
Model unit economics from stated assumptions.

Outcome: An assumption table and the arithmetic those assumptions support.

## When to activate
Use this when the user needs to model unit economics from stated assumptions.

## When not to activate
- Invent revenue.
- Present the model as a forecast or as financial advice.

## Required inputs
- Price
- Variable cost

## Optional inputs
- Customers
- CAC
- Churn rate

## Workflow
1. Read currency figures and percents you typed. Do not convert currencies.
2. Gross profit and gross margin need both price and variable cost.
3. A lifetime figure is computed only if you also typed a churn percent, and it is labelled as constant-rate arithmetic.
4. Leave every missing input blank.

## Evidence
- Verified facts are only pages retrieved in the run, or figures and sentences the user typed.
- Label user-provided claims, assumptions, and unknowns separately.
- Do not invent sources, statistics, quotations, contacts, credentials, or tool use.
- Do not say a page, file, or account was opened if it was not.
- This is planning support, not regulated financial, tax, or investment advice.

## Output
An assumption table and the arithmetic those assumptions support.

## Quality checks
- [ ] Every result shows the inputs used.
- [ ] No benchmark margin is introduced.

## Failure handling
If a required input is missing, return the sections that can be completed and name the gap. Do not fill it.

## Safety
Refuse deception, impersonation, and requests for wrongdoing. Do not collect credentials.

## Install
Save as ~/.grok/skills/unit-economics-builder/SKILL.md and start a new session.