GenAI-based development platform - part 4: The coding agent sandwich pattern

This article describes the “coding agent sandwich” — an architecture pattern consisting of a tasty filling of LLM invocations sandwiched between two slices of plain old code (POC). This article is part of a series about the GenAI-based development platform (a.k.a. harness) that I’ve been developing to make GenAI-based coding agents like Claude Code more productive, more secure and less frustrating.