Building Reliable AI Agents Series: A 12-Factor Methodology

After building production AI systems over the past few years, thanks to HumanLayer, I’ve learned that most agent failures aren’t about the LLM, they’re about architecture.

That’s why I’m creating a series of posts sharing the 12-Factor Agents methodology using Mastra.

In each part, I’ll break down one principle that transforms fragile prototypes into robust, production-ready AI agents.

Table of Contents

Factor 1: Natural Language → Tool Calls

Factor 2: Own Your Prompts