I think the most interesting skill here is the control-browser one: https://codex-tool-reference.simonw.chatgpt.site/skills/cont... It tells ChatGPT Work how to launch a Playwright instance via its Node.js REPL, and tells it to run: nodeRepl.write(await browser.documentation()); To get further instructions. That method returns this text with full details about how to use the browser: https://codex-tool-reference.simo…
Skill file could indicate general instructions for all browsers. This provides guidance for the browser that's about to actually be used.