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Simon Willison’s Showboat Ecosystem Expands with Chartroom and Remote Publishing

Showboat Claude Code Remote Publishing Datasette CLI Tool Chartroom Web Automation
February 17, 2026
Source: Simon Willison
Viqus Verdict Logo Viqus Verdict Logo 8
Agent Empowerment
Media Hype 6/10
Real Impact 8/10

Article Summary

Simon Willison, the creator of the Showboat CLI tool for agents to generate Markdown documents, has unveiled two key additions to the ecosystem: Chartroom and the remote publishing feature. Chartroom is a CLI charting tool built around the popular `matplotlib` library, enabling agents to easily incorporate charts directly into Showboat documents. This is particularly useful for agents performing data analysis tasks, allowing them to present findings visually within a generated Markdown document. The remote publishing feature, introduced in Showboat v0.6.0, addresses a key limitation of the original tool – the inability to see documents until they were fully committed. Now, Showboat can push document fragments to a Datasette instance in real-time, allowing for immediate feedback and iteration with Claude Code or Codex. The feature is configured via an environment variable, making it simple to enable. These additions streamline workflows for agents involved in data exploration, documentation, and report generation, significantly enhancing Showboat's utility as a tool for building intelligent, agent-driven systems. The combination of Chartroom and remote publishing provides a robust framework for automating the creation of visually rich documentation and insights.

Key Points

  • Showboat now includes Chartroom, a CLI charting tool utilizing `matplotlib` for generating charts within documents.
  • The new remote publishing feature allows Showboat to incrementally push document fragments to a Datasette instance, enabling real-time feedback and iteration.
  • These additions significantly enhance Showboat's utility as a tool for building intelligent, agent-driven systems.

Why It Matters

This news is important for professionals working with AI agents and automation. The expansion of Showboat's capabilities – particularly the ability to visualize data through Chartroom and the streamlined remote publishing feature – represents a significant step towards making agents more effective for real-world applications. This empowers developers and researchers to create more sophisticated systems that can automatically generate documentation, reports, and insights from data, reducing manual effort and improving the quality of output. It also highlights the growing trend of integrating data visualization tools into agent-based workflows, a critical aspect of responsible AI development.

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