Notes from the studio
Product decisions, technical lessons, and reflections on building software from Latin America. Full transparency about what works and what doesn't — yet.
- Apr 23, 20267 min read
Prompt engineering in production: what we learned building with LLMs
After a year iterating on the prompts behind a real product with Claude, here's what I know works and what I know is noise. No magic recipes, principles instead.
AI & LLMsReclamaAI - Apr 17, 20266 min read
PDF generation with Puppeteer on serverless: architecture, costs, and traps
How ReclamaAI generates thousands of legal PDFs from serverless functions. Why Chromium weighs 50MB, how we squeezed it into Vercel, and what to do when it falls over.
Stack decisionsReclamaAI - Apr 13, 20267 min read
Wompi in production: lessons from integrating Colombian payments
Honest notes from integrating Wompi into ReclamaAI: PSE, Nequi and card. Webhooks, peso edge cases, failure handling, and what no tutorial tells you.
PaymentsReclamaAILatam context - Apr 4, 20265 min read
Building in public from Colombia: notes from a solo founder
Three things I learned trying to start a software studio from Colombia, with no team, no investors, no SF network. And why doing it this way is a privilege.
Building in publicLatam contextVantLabs - Apr 1, 20267 min read
Why Next.js 16 and Tailwind v4 across the entire VantLabs stack
A decision that looks technical but is really about product: why we standardized VantLabs on Next.js 16 + Tailwind v4 + TypeScript, and what it cost us.
Next.jsStack decisionsVantLabs - Mar 25, 20266 min read
Personal finance without friction: why VantFi
Why build another personal finance app in 2026, what problem VantFi actually solves in Latin America, and why most existing apps fail in this market.
FintechVantFiBuilding in public - Mar 12, 20268 min read
How we're building ReclamaAI: from problem to MVP with legal AI
The story behind VantLabs' first product: why it exists, how we picked the stack, what decisions we made with Claude, and what's left before public beta.
LegaltechReclamaAIBuilding in public