Building your own Tool Calling Agent

Any sufficiently advanced technology is indistinguishable from magic. — Arthur C. Clarke At times I feel like Claude Code is this magical black box that I can give tasks to and get working code out of. This post attempts to shine a light on that black box by building our own agent harness around a model. To do this, I will use Anthropic’s API to build a simple code review harness, showing how to…