Creating a multi-agent application – Part 4

Part 4 of a series on building a multi-agent application covers the implementation of the Author and Reviewer agents. The Author agent uses a factory method pattern to create a chain that takes research findings, a current draft, and review notes, then invokes an LLM with a structured prompt to generate or revise a blog post. The Reviewer agent follows the same pattern, evaluating drafts and either approving them or routing them back to the Author for revision, with a maximum of 4 revision cycles. Both agents are implemented as nodes that update shared application state.