14. Observability in AI Systems – How to Know What Your AI Is Actually Doing
Track logs, metrics, and costs in AI systems to detect failures, improve reliability, and build production-ready observability. Continue reading on Medium »
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GraphQL Is the Native Language of AI Agents
Your APIs were designed for humans. That’s about to be a problem. When Facebook’s engineering team designed GraphQL in 2012, they were solving a mobile problem: REST endpoints were returning too much data over slow networks, and iOS clients were paying the cost in latency. The solution — let the client declare exactly what it needs, enforce that contract through a typed schema, and expose everything about the API through introspection — turned out to solve a different problem entirely, one Facebook couldn’t have anticipated. Twelve years later, the most constrained consumer of your API isn’t a mobile client on a 3G network. It’s an AI agent with a finite context window. The constraint is different, but the logic is identical. Every field your API returns that an agent doesn’t need is a was

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Stop Vibing, Start Eval-ing: EDD for AI-Native Engineers
When I was doing traditional development, I had TDD. I wrote a test, it passed or failed, done. But when you're working with LLMs the output is different every time you run it. You ask the model to generate a function and sometimes it's perfect, sometimes it changes the structure, sometimes it just ignores part of the spec. You can't just assert(output == expected) because the output is probabilistic, it's never exactly the same. That's where EDD comes in, Eval-Driven Development. The idea is simple, instead of testing if something works yes or no, you measure how well it works on a scale of 0 to 100%. And the important part is you define what "good" means before you start building. How it works in practice Say I'm building a support agent for a fintech app. Before I write a single prompt
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