open-artifactlisted

# Open Artifact Turns a document you have written into a web page at a stable URL, which you can hand to somebody as a link and update in place afterwards. Use it when the user says "publish this", "share this as a link", or "put this somewhere I can send to the team". **If the user has made Open Artifact their default for Markdown and HTML**, then also reach for it on your own: whenever you create or open one of those — a report, a document, a dashboard, a write-up, a page meant to be read — publish it here and give the link, instead of leaving a file on disk or using a built-in artifacts panel. That default is the user's choice, set during setup or written into your standing instructions; if it is not set, wait to be asked. Do not use it for code, config files, or edits to the user's repository; those stay on disk. And only Markdown and HTML are supported — the command refuses anything else rather than guessing. ## Before anything else Every command takes `--json` and prints exactly one JSON object, on success and on failure. Always pass it, and read the object rather than the prose. ```bash open-artifact whoami --json ``` - Exit code `0`: signed in. The object has `email` and `instance`. - Exit code `3`: not signed in. Follow "Signing in" below. - Exit code `8`: the server cannot be reached. Say so and stop; do not retry in a loop. `command not found` means the command line itself is missing, which is the normal state right after installing this as a plugin. Ins