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Two Voice Devs

Two Voice Devs

What is an Agent Harness?

· 30 min · Season 1 Episode 276

Show notes

In this episode, Allen Firstenberg and Sam Witteveen dive into one of the newest and most discussed concepts in the developer community: the "Agent Harness." What exactly is a harness, and how does it transform a simple, one-shot AI model into a truly capable, autonomous agent?

Sam and Allen demystify this new paradigm, tracing its evolution from early frameworks like LangChain and LangGraph to the modern, bespoke, "off-the-rails" architectures powering tools like Claude Code, Hermes Agent, and Antigravity. They explore essential best practices—including sandboxing, persistent file access…

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