Cowart Open Canvas

The actual canvas-opening capability is the cowart_mcp MCP server and its render_cowart_canvas_widget tool. Use this skill when the user asks to open, reopen, or explicitly refresh the canvas. A bare @Cowart invocation with no other actionable request may also open the canvas. Do not use this skill as a prerequisite for image generation, annotation editing, HTML, Slides, or follow-up requests sent from an already-open Cowart widget.

Workflow

1. Ensure the cowart_mcp MCP server is loaded or discoverable and that its render_cowart_canvas_widget tool is available. The host may expose the complete tool name as mcp__cowart_mcp__render_cowart_canvas_widget. Call the tool once for the user's open, reopen, or explicit refresh request. Pass the user's active Codex workspace as projectDir; do not pass the Cowart plugin repository directory.

{
  "projectDir": "/absolute/path/to/user/codex-project"
}

The tool returns openai/outputTemplate: ui://widget/cowart/canvas.html, which tells Codex to render the widget directly. Do not start scripts/start-canvas.sh or open a localhost URL for normal use.

2. Confirm the widget opens for the user. The canvas data is stored in the active project: