About this skill

Problem

When revising an image, web page, or Markdown document, describing the target and edit verbally is easy to misalign. Cowart lets you draw the instruction next to the object: circle the area with an arrow, add a short note such as make the hat red, then submit.

How It Works

Infinite canvas: built on tldraw, with pan, zoom, custom shapes, and light/dark themes.
Annotation as command: arrow plus text is written to canvas/pending/; the resident watcher annotate-watcher.mjs picks up file events.
Headless agent execution: agent-runner.mjs starts a separate CLI process. Images use ImageGen for local repaint; HTML/Markdown content rewrites the current source.
Automatic insertion: images are inserted beside the original shape; HTML/Markdown updates are written back to the target shape, and the canvas refreshes via SSE.
Script discipline: canvas writes should go through scripts/ rather than hand-built shape records, which can miss required fields and break the canvas.

Boundaries

Best for localized image edits, article layout tweaks, and Markdown drafting or rewriting. Image generation requires an agent tool; if the headless process fails to start, processing falls back to the hourly safety net. HTML/Markdown edits must use the latest source from the job file to avoid overwriting user changes.