Build on proof.
Not vibes.
FounderOS is the proof engine for early-stage founders. Sharpen your mechanism hypothesis. Run experiments. Log results. Generate a conviction arc that speaks for itself.
Free to activate. No application required.
FounderOS
The critical path from claim to proof.
Position your Value
Turn messy thoughts — who you serve, what you solve, why you — into a unique value proposition statement you can build a hypothesis on.
Commit to Logic
Stake your hypothesis and the metric that proves it. Name the failure condition first — what would prove you wrong, not just right.
Test It
Design the experiment against what you already committed to. Set the gate before you see results, not after.
Eval
A gut check on your own data — where conviction is forming, where it's stalling, what to focus on next.
Every input compiles into one proof view — your conviction arc, one public link.
Start building →
The OS Agent runs underneath every step — pressure-testing what you claim, forcing you to name what would prove it wrong, and reading back where your own conviction is actually forming. It doesn't let you avoid the hard question.
Founder Lab
The human cadence.
Founder Lab is where founders get challenged — in person or virtual — on a recurring weekly cadence of structured check-ins and direct access to operators and venture partners. Lab is a running work session for founders who want that cadence built in with other builders.
Join Lab →
Signal
Proof stack for investors.
Signal is the investor surface of FounderOS. Funds use it before the first call — running their own diligence against the proof arc, forming conviction over time around the real constraint, not just the pitch.
Investor access →
Signal SF · TechWeek · Oct 7 · San Francisco
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