How to Build Reliable AI Products: A Production Engineering Guide
AI demos are easy. Reliable AI products are an engineering problem.
Notas escritas mientras hago el trabajo.
Publicaciones técnicas, decisiones de producto y observaciones honestas, escritas mientras construyo, no después.
Los artículos y las entradas del registro están en inglés.
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How Chrome Extensions Actually Work in 2026 (Manifest V3 Explained)
MV3 is four moving parts, manifest, service worker, content scripts, and UI, not a single script tag anymore.
Personal Page - From Personal Site to Product
Stop presenting projects. Start shipping a system that compounds trust.
Construir en público
Registro de desarrollo
Qué se lanzó, qué se rompió y qué cambió, escrito en el momento.
ResistGate 1.3.3, clearer popup, better first glance
Shipped a popup refresh focused on first-glance clarity: the popup now states the job plainly, the current-tab shortcut says exactly what it does, and the empty state lost its duplicate copy. Small release, but every session starts at the popup.
Amethyst 1.6.2, the popup stops trying to be the dashboard
Rebuilt the Amethyst popup around one question: where did today go? It now opens with the daily total, top sites, and a single button into the full dashboard. Removed the tracking badge, comparison chip, sync button, and feedback card, the glance view answers fast, then gets out of the way.
Published the agent-readable portfolio series
A run of notes on making this site readable by AI agents: the MCP server, the public API, the data model, and the security lessons from exposing it all. Personal sites are becoming APIs, this series documents doing it for real.
Ingeniería de IA
Cómo se comportan las funciones de IA cuando las usan personas reales, no demos controladas.
Every AI Feature Needs a Second Writer
Shipping a custom model is only safe if a boring commodity model can take over on the next request, with no deploy and no user-visible seam.
The Training Set Was a Text File a Client Wrote by Hand
Every fine-tuning tutorial starts with a clean dataset. Mine started with 400 Spanish quotes under loose headers in a .txt file, and getting from one to the other was most of the work.
Extensiones de Chrome
Guías prácticas para Manifest V3, herramientas de navegador y distribución de extensiones.
ChatGPT Sends ResistGate More Visitors Than Social Media Does
Twelve of ResistGate's 137 store-page visitors this year came from AI assistants. Social media sent three.
Chrome Can Miss the Focus-Lost Event on macOS
A focus event tells my time tracker something may have changed. It asks Chrome which window has focus before it records a minute.
Decisiones de producto
Precios, elecciones de producto y lo que he aprendido intentando crear cosas que la gente realmente compre.
What Loot Boxes and Battle Passes Teach Every Builder
Game monetization splits cleanly into predictable-and-fair and random-and-manipulative. Regulators are banning the second, and the same line runs through how any product charges.
Subscription Fatigue and the Real Cost of Dark Patterns
Retention won through dark patterns is debt. It builds regulatory and reputational liability and makes every future price increase impossible.
Diseño de sistemas
Compensaciones de arquitectura, primitivas sobre complejidad y patrones de sistemas duraderos.
Keep Slow Work Off the Real-Time Path
The shared action should not inherit the latency of every feature it triggers.
Server Authority Without a Sluggish Interface
Predict locally, decide centrally, and make rejection a first-class state.
Cómo pienso
Cómo tomo decisiones, me mantengo enfocado y sigo avanzando sin equipo.
Ten users and a five-star rating
You can't skip the ten. Every million starts as ten people who actually stayed.
Ten Questions Before You Pick a Business Model
The right model is the one your product's costs, users, and habits actually point to, not the trendy one. Ten questions get you there.
Cómo trabajo
Sueño, rutinas, aprendizaje y lo que realmente me mantiene al máximo.
Guías y listas de verificación
Guías prácticas y listas de verificación, escritas en inglés.