Supermux core is a typescript library to build agentic applications on top of your existing subscriptions (Claude Code, Codex, Grok Build, Cursor and Antigravity). It would help you build your own Software factory, CI Bot etc. I think it unlocks many use cases.
It runs each agent's own CLI on your machine, with the login that CLI already has, and gives your code one API for sessions, events, permission prompts and subagents across all six.
Have your agent build your app with Supermux Core. The package has a skill that teaches it the library:
npx skills add UstaLabs/supermux --skill supermux-core