wtf is redcard?

Red Card is a playful macOS project built around OpenAI's Codex coding assistant that gives you a physical, almost theatrical way to leave a video call. The idea is simple: you hold up a red card, like a referee in a sports match, to your webcam, and the app automatically says goodbye in the meeting, leaves the call, blocks off time on your calendar so people can see you are unavailable, turns on your email vacation responder, and plays a small referee themed animation to mark the moment. What makes this project unusual is how it is meant to be set up. Rather than manually installing and configuring code yourself, you open ChatGPT on a Mac in Codex mode and simply ask it to help you build the project from the GitHub repository link. Codex then installs a self-contained skill, builds the small native helper programs it needs, and walks you through the camera and permission checks required for everything to work, without you needing to know how to program. To actually use it day to day, you join a video call in Google Chrome, type a short command to activate the skill inside Codex, and hold up a red card, or a phone screen showing an image of one, when you are ready to step away. Pressing the Escape key at any time cancels the sequence. Getting it running requires a Mac with ChatGPT and Codex access, Google Chrome signed into the right account, Python 3.11 or newer, Apple's developer command line tools, a working camera, and granting the ChatGPT app permission to access the camera, control other apps, and monitor keyboard input. The project is explicitly designed to be customized: you can ask Codex in plain language to change the goodbye message, the calendar block, the vacation reply, or the referee animation, and it will update and test those changes for you.