Simon Willison introduces two tools, Showboat and Rodney, designed to enhance the workflow of coding agents. Showboat allows agents to create Markdown documents that demonstrate their software’s functionality. By using simple commands, agents can document their work, run code, and include outputs and images directly in the Markdown file. This tool addresses the challenge of verifying that code behaves as expected, especially as coding agents become more integrated into development processes. Willison emphasizes the need for effective demonstrations to minimize manual quality assurance. Rodney complements Showboat by providing CLI browser automation. It leverages the Rod library to interact with Chrome's DevTools protocol, enabling agents to perform tasks like opening web pages, executing JavaScript, and taking screenshots. The goal is to allow agents to document their web interface projects seamlessly. Willison highlights the utility of both tools in capturing the progress of coding agents, making it easier for supervisors to assess their work. He notes that while automated testing is important, having clear and demonstrative artifacts from coding agents is critical for effective oversight.