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build

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Use this skill when a solo founder is about to build or add to their product with Claude Code: 'build my MVP,' 'let's build this,' 'add this feature,' 'write a spec,' 'scope the first version,' 'Claude keeps breaking things,' or 'we're going in circles.' Checks that someone has paid first, scopes the first version from the steps the founder already does by hand, writes a short spec, and builds one piece at a time with a re-test after each piece. Not for deciding what form the product takes (use is-this-an-app) or for the pre-launch check (use go-live).

skills/build/SKILL.md

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262
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Oct 16, 2026
License
MIT

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# Build

Build the smallest version that paying customers need, one piece at a time. Every piece is tested before the next one starts.

## Step 1: Check the gate

Ask: "How many people pay for this today, and do you deliver it by hand now?"

- **Paying customers and written manual steps:** continue.
- **No paying customers:** say once, plainly, that building first is the most common way founders lose months, and suggest the manual delivery test in **validate** and **first-customers**. If the founder still wants to build, build. It is their decision.

## Step 2: Scope the first version

Start from the founder's written manual steps, if they exist. The first version automates **the one step that takes the most time per customer**. Every other step stays manual, or uses a tool the founder already has: a form, a spreadsheet, a payment link, email.
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