Builder's Skills
Ready-to-use AI agent skills that embed hard-won product thinking into your development workflow. Copy a file, type a command, get opinionated guidance every time you need it.
What is a skill?
A skill is a small instruction file you save in your project. Once it's there, you can type a command like /validate-idea in Claude Code (or any AI coding agent), and it runs those instructions automatically. Every time. No re-explaining, no copy-pasting from a guide, no forgetting the steps. The thinking is baked in.
Think of it like this: right now, every time you want your AI to help with something specific, you type out what you want from scratch. A skill means you do that work once, save it, and reuse it forever. It's the difference between giving directions from memory every time and just saving the address.
These skills are different. They're not generic templates. Each one carries specific judgment from my experience building 30+ products, examining banks at the FDIC, and shipping AI systems at Dell. When you run /security-audit, you're not getting a generic checklist. You're getting the questions a former bank examiner would ask about your code. When you run /validate-idea, you're getting the framework I wish I'd used before building 30 things nobody paid for.
How to add a skill to your project
- Find the skill you want below and click through to copy it
- In your project, create the folder
.claude/skills/if it doesn't exist - Save the content as a
.mdfile in that folder (e.g.,.claude/skills/validate-idea.md) - In Claude Code, type
/validate-ideaand it runs automatically
That's it. The skill lives in your project. It works every time. You can edit it, customize it, make it yours. These are starting points, not sacred texts.
/validate-idea
Forces you through the hard questions before you write code. Built from 30+ projects that went nowhere.
/discovery-questions
Generates interview questions that surface real problems, not polite encouragement.
/system-prompt
Writes and pressure-tests your system prompt. Because your prompts are more of your product than you think.
/cost-calc
Makes you do the unit economics math before your bill surprises you.
/ship-check
The drill sergeant who makes you ship. Separates real blockers from avoidance.
/landing-page
Generates copy using the 5-second test. One page, one goal, one button.
/outreach
Personalized messages for your first 50 users. Genuine, not spam.
/eval-builder
Creates your first 20 test cases. The Army AAR framework applied to AI.
/security-audit
The questions a former FDIC bank examiner would ask about your code.