Create a data app on autario in ONE call, owned by you. You give it a name and an entry: either an https URL where the app already runs, or the app's HTML itself (a single self-contained document, max 512 KB) which autario then hosts and serves inside a locked sandbox. The app id is derived from the name, so you never invent one. The new app is PRIVATE: only you can open it, it is in no catalog and at no public URL until you call publish_app. Use this as the FIRST step whenever a user asks you to build them an app, a dashboard, a report page or a tool that runs on autario data | the public catalog (World Bank, FRED, Eurostat, OECD, WHO, IMF, ECB, US Census, SEC) or the user's own connector tables (Google Search Console, GA4, Google Ads, Meta Ads, YouTube, TikTok, Instagram, Facebook, Shopify, LinkedIn). Follow it with write_app_artifact (to save the app's data or saved views), get_app_preview_url (to hand the user a link to try) and publish_app (to make it public). Requires authentication.