Subagents vs A2A: One Is a Pattern, One Is a ProtocolI get asked to compare these two often enough that it is worth writing down properly. The short answer is that subagents and A2A are not competing, and treating them as alternatives leads people to buAug 10, 2026·15 min read
Letting Agents Run, SafelyPart three of a series on agent harnesses. Part one introduced the model-plus-harness idea, and part two split work across subagents. This piece is about the layer where agents stop just talking and sJun 5, 2026·8 min read
One Agent Is Not Always EnoughPart two of a series on agent harnesses. If you have not read part one, it introduces the idea that an agent is a model plus the harness around it. This piece builds on that, so a quick skim first wilJun 5, 2026·7 min read
Agent = Model + HarnessIf you have ever called an LLM API, you already know the basic shape of it. You send some text, you get some text back, and the connection closes. That is a model. It is good at producing language, buJun 5, 2026·8 min read
The Day 15 Files Became OneMeet Sam. Four months ago, Sam joined a fast-growing document management startup as a backend developer. The company's product processes documents in various formats, JSON, XML, YAML, CSV, and more. Sam's job? Build a robust document parsing system. ...Jan 10, 2026·25 min read
Bob The BuilderMeet Bob. Two months ago, they joined a fast-growing data analytics startup as a backend developer. The company's main product is a data warehouse API that lets customers query massive datasets. Bob's job? Build a client library that makes it easy to...Jan 1, 2026·24 min read
The Configuration ChaosMeet Jordan. Six months ago, Jordan joined a promising startup called "FastAPI Co." as a DevOps engineer. The company's main product is a high-traffic API service that handles configuration management for thousands of micro-services. At peak times, t...Dec 20, 2025·22 min read
