The open operating system for first-time founders. Proof before hype. 22 AI skills across the founder journey — Claude Code, Codex, Cursor, or any chatbot.
Skill Claude CodeCodex
Use when a founder faces a hard, ambiguous, or high-stakes decision and wants to think it through with proven lenses rather than gut alone - "help me think about this", "what am I missing", "should I do X or Y", "stress-test my thinking", "I'm stuck on a decision". Applies the right mental models (inversion…
Skill Claude CodeCodex
Use when a founder needs to name the company or product and set a simple brand voice - when they say "what should I call it", "help me name my startup", "is this name any good", "the domain is taken", "what's my brand voice", or are stuck cycling through names. Produces a screened name shortlist (with availability…
Skill Claude CodeCodex
Use after a Founder OS skill, flow, or decision produced a real outcome worth remembering - when something worked, something failed, advice turned out wrong, or the founder says "remember this", "note this lesson", "that didn't work", or "update the playbook". Appends a dated, sourced lesson to the living knowledge…
Skill Claude CodeCodex
Use when a founder is choosing a co-founder or splitting equity - when they ask "do I need a co-founder", "how do I find a co-founder", "how do I split equity", "is 50/50 fair", "what's a fair founder split", "how do I evaluate a potential co-founder", "should we vest", "what if a co-founder leaves", or are about to…
Skill Claude CodeCodex
Use when a founder has a real or prototype consumer/physical product (food, beverage, cosmetic, personal-care, household, hardware, or a packaged good) and needs to test whether it actually works for real users - beyond problem interviews. Triggers: "how do I test my product", "prototype test", "home-use test", "does…
Skill Claude CodeCodex
Use when a founder needs to talk to potential customers and wants real signal, not flattery - when they say "I'm going to interview some users", "how do I do customer discovery", "I want to validate the problem", "no one will give me honest feedback", or are about to pitch their idea in a "research" call. Applies Mom…
Skill Claude CodeCodex
Use when a founder needs their first paying customers and there's no inbound, no audience, and no growth engine yet - when they say "how do I get my first customers", "nobody's signing up", "how do I do outbound", "I hate selling", "how do I get to 10 customers", or are waiting for customers to magically appear.…
Skill Claude CodeCodex
Use when a founder is making early hires - when they ask "should I hire someone", "what's my first hire", "who do I hire first", "how do I write a job description", "how do I interview", "employee or contractor", "how do I find good candidates", "how do I onboard", or are about to hire to feel less overwhelmed. Covers…
Skill Claude CodeCodex
Use when writing, refining, or porting any Founder OS prompt or skill, or when a founder asks "how do I write a good prompt for this" - provides the shared 3-tier (Low/Medium/High) scaffold, placeholder glossary, and quality rules every Founder OS skill is built on. Invoke before authoring a new skill or when an AI…
Skill Claude CodeCodex
Use when a founder is starting or running a fundraise and needs to manage it like a sales process - when they say "how do I find investors", "I'm raising and don't know where to start", "my raise is dragging", "should I raise now", "how do I run investor meetings", or are taking one-off investor coffees with no…
Skill Claude CodeCodex
Use when a founder needs words for a landing page that converts - when they say "write my landing page", "what should my headline be", "my page isn't converting", "people don't get what I do", "help me with the hero section", or are about to ship a page full of features and jargon. Produces conversion-first page copy…
Skill Claude CodeCodex
Use when a founder is approaching a launch and needs a sequenced plan instead of a single chaotic "go live" day - when they say "I'm launching next week", "how do I launch", "what do I need before I launch", "should I do a Product Hunt / waitlist / public launch", "build me a launch checklist", or are about to ship to…
Skill Claude CodeCodex
Use when a founder is forming the company or worried they've skipped legal basics - when they ask "should I incorporate", "when do I form a company", "LLC or C-corp or what", "do I need a founders' agreement", "how do I assign IP to the company", "what's founder vesting", "is my cap table clean", "what contracts do I…
Skill Claude CodeCodex
Use when a founder needs to decide what to measure - when they say "what metric should I track", "what's my north star", "I'm drowning in dashboards", "is this a vanity metric", "what should I focus on this quarter", or are tracking everything and steering by nothing. Picks the ONE north-star metric that captures…
Skill Claude CodeCodex
Use when a founder needs to build or fix an investor pitch deck - when they say "help me make a pitch deck", "my deck isn't landing", "what slides do I need", "investors keep ghosting after the deck", or are about to send a deck to a VC/angel. Builds the investor narrative first, then a tight 10-12 slide deck where…
Skill Claude CodeCodex
Use when a founder has run real experiments and must decide whether to keep going, change direction, or stop - the moment validation results, retention, pipeline, or runway are forcing a call. Reach for this when they say "should I pivot", "is this working", "do I keep going", "should I kill it", "the numbers are…
Skill Claude CodeCodex
Use when a founder is ready to take a product to market and needs to say what it is, who it's for, and why it wins - when they say "how do I describe this", "what's my positioning", "what's our messaging", "which channels should I use", "how do I get to market", "nobody gets what we do", or are about to spray budget…
Skill Claude CodeCodex
Use when a founder needs to set or fix a price - when they say "how should I price this", "what should I charge", "am I too cheap", "should I do subscription or one-time", "how many tiers", or are about to launch with a number they pulled from thin air. Produces a value-anchored pricing model, 2-3 tiers, a…
Skill Claude CodeCodex
Use when a founder needs to understand the money - when they ask "how long until we run out of cash", "what's my burn rate", "how much runway do I have", "are my unit economics any good", "what's my CAC/LTV", "can I afford to hire", "is this business actually profitable per customer", or are raising/spending without a…
Skill Claude CodeCodex
Use when a founder is about to start building and needs to decide what to build first - when they say "what should my MVP be", "what's the minimum I can ship", "I'm scoping the first version", "let's start coding", or have a feature list that's quietly becoming a full product. Scopes the smallest thing that tests the…
Skill Claude CodeCodex
Use when a founder is testing a product people taste, smell, touch, or apply to the body - food, beverage, supplements, cosmetics, personal care, household - and needs to know if it actually performs and is liked, beyond what interviews can tell. Triggers: "is my product good enough", "taste test", "sensory panel"…
Skill Claude CodeCodex
Use when a founder is overwhelmed, unsure what to do next, just arrived at Founder OS, or asks "where do I start", "what should I work on", "I have an idea now what", or "help me figure out my next step". Acts as the front-door diagnostic - asks a few questions, locates the founder on the journey, and routes them to…
Skill Claude CodeCodex
Use when a founder has a startup idea and needs to test whether it's real before building - when they say "I have an idea", "is this worth building", "how do I validate", "should I build this", or are about to start building without evidence. Produces a sharp problem statement, surfaces the riskiest assumption, and…