Essays and notes on AI, software engineering, developer tools, systems, and the shape of modern product building.
Antonio B De Castro

2025 starts with coding agents in every IDE and the profession redefining itself in real-time
Antonio B De Castro

The shift from assistants to agents is the biggest architectural change since microservices
Antonio B De Castro

AI agents, MCP, Zig’s momentum, and the frameworks that survived the hype
Antonio B De Castro

AI moved from experiment to expectation—here’s what actually mattered
Antonio B De Castro

Manual memory management without the pain of C—Zig is the perfect learning-by-doing language
Antonio B De Castro

We’re generating code faster than we can verify it—and our testing practices haven’t caught up
Antonio B De Castro

How a ‘mid-tier’ model became the developer’s choice for code generation and analysis
Antonio B De Castro

Your Dockerfile is probably a security liability—here’s how to fix it
Antonio B De Castro

Erlang’s runtime with a modern type system and friendly syntax—what’s not to love?
Antonio B De Castro

OpenTelemetry won—now Grafana, Datadog, and everyone else are building on the same foundation