Cowart Plugin Turns Codex Into a Visual Design Tool With Infinite Canvas

A new open source plugin called Cowart, published by developer Zhong Xin, wires a local infinite canvas directly into the Codex coding agent. Instead of generating images through pure text prompts, you drop image placeholders on a canvas, scribble arrows and notes on top of results, and let Codex regenerate cleaned up versions in place. The project has drawn attention on GitHub for turning Codex, normally a code-focused agent, into something closer to a visual design tool.

Cowart bills itself as a local infinite canvas plugin for Codex built on tldraw, used for ideation, annotation, image generation, and iterating on images from annotated versions. The canvas runs in a local web service, and data is saved by default to the current project's canvas/ directory rather than into the plugin repository itself. That project-scoped storage is a small but important design choice, since each codebase carries its own visual scratchpad alongside the source.