http://programmer.ie/tags/tool-use/ Recent content in Tool Use on Programmer.ie: Modern AI programming Hugo en-us Sat, 08 Aug 2026 15:40:00 +0100 http://programmer.ie/post/agents-from-first-principles-00/ Sat, 08 Aug 2026 15:40:00 +0100 http://programmer.ie/post/agents-from-first-principles-00/ <h1 id="what-is-an-agent-really">What Is an Agent, Really?</h1> <p>This is the first post in <strong>Agents From First Principles</strong>.</p> <p>It follows two earlier series.</p> <p>In <strong>PyTorch: Zero to Hero</strong>, we worked upward from tensors, autograd and neural-network building blocks until we could build a small language model ourselves.</p> <p>In <strong>Models From First Principles</strong>, we moved one level higher. We looked at how learned components can be composed into scorers, value models, policy heads, recurrent models, hierarchical models and compact recursive systems.</p>