René Zander
@determa
Heidesee, Brandenburg, Germany
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Recent activity
- Commented onI told a founder to get listed on the review sites. Her report showed AI was citing her competitors' homepages.
- Commented onI built a startup-idea scanner. It just told me none of my 3,400 ideas are easy wins.
- Commented onThe thing that kills AI pilots is not accuracy.
- PostedThe thing that kills AI pilots is not accuracy.
- Commented onI'm validating a B2B idea and want honest reactions.
- Commented onI spent months building a reliability layer for LLM applications — but I'm still trying to understand if I'm solving the right problem
- Commented onTwo sharp readers found security flaws in our product in the same week. We are grateful.
- Commented onWe're debating the next feature for StateGuard. Would you trust this?
- Commented onMy AI agent leaked my API key — so I built the guardrail and launched it on Product Hunt today
- Commented onBuilt a tool that catches when AI agents quietly get worse — looking for 2-3 people to try it free
- Commented onI built an AI that roasts landing pages for CRO — before I build more, tear the feature set apart
- Commented onI spent 3 weeks wiring Stripe + auth + LLM routing. Here's what indie hackers should skip.
- Commented onWhat 100B+ Claude tokens actually look like inside a tiny company
- Commented onI scored my own startup with my own product. It gave me a 34/100 AI Leverage Score™. I shipped the 34.
- Commented onMost AI browsers hide what the agent is doing. I wanted to see it happen live, and run it locally. So I built one.
- Commented onI built an AI that answers support questions. Founders still hated it. Here's what I learned.
- Commented onHow Not to Startup / The AI Business Partner Trap
- Commented onThe hard part of delegating to an AI agent is knowing what evidence would let you trust the stop point
- Commented onI'm validating a B2B idea and want honest reactions.
- Commented onI built a digital product automation system,but keeping everything connected was the real challenge