architecture

A graph in the context of AI work is simpler than it sounds: it's a map of which jobs need to happen and what each one depends on.

Agents run tools in a loop to achieve a goal

Harrison’s 4 elements of an agent remain – the system prompt, planning tool, file system, and subgents – describing the core loop. This is the core loop the developer controls with the keyboard. The harness manages everything beyond this, the world the developer sits within.