David Castro

🛡️ Software engineer building ScanMessage — AI fraud detection for WhatsApp & SMS in LatAm. Sharing my journey from 0 to 1 in public

Products

ScanMessage

AI fraud detection for WhatsApp & SMS messages in Latin America. Paste any suspicious message and get a risk score, detected signals, and a plain-language explanation of why it's dangerous.

Launched — May 2026

Articles

Essays and reflections I’ve published about building products, tech, and the journey of indie hacking. Links point to my Medium blog, where I share stories, lessons, and experiments.

How to design an API davidcasr.medium.com
How to write API documentation? davidcasr.medium.com

Social Links

Let’s connect! Here you’ll find my social profiles where I share updates, ideas, and resources about building in public, tech, and indie hacking.