Field notes from building with agents. Written from what actually shipped, including the parts that did not work.

1. 2026-10 SOLID for AI Agents: The Charter Is the Interface, and KISS Decides When to Split 21 min
2. 2026-09 So You Want to Build AI Agents That Do the Work? Start with Evals 34 min
3. 2026-07 Mastra Memory: The Context Layer That Survives Long Conversations 20 min
4. 2026-06 MCP: Why the Description String Is the Most Important String in Your Harness 23 min
5. 2026-06 Mastra Processors: la capa de guardrails que se ejecuta en cada paso 12 min
6. 2026-06 Mastra Processors: The Guardrail Layer That Runs on Every Step 10 min
7. 2026-05 Building a Fully Functional Agent Harness with Mastra 12 min
8. 2026-01 Foundations of AI: From Vectors to Neural Networks 22 min
9. 2025-12 Vibe Engineering: A Guide to AI-Assisted Coding with Agents 12 min
10. 2025-07 How I Use AI and LLMs for Coding - A Comprehensive and Opinionated Guide 20 min
11. 2025-04 Model Context Protocol (MCP) - The USB-C for AI 6 min