This is the CLI for the claude.ai infrastructure, packaged as a Claude skill so you can call it directly from conversations. The 250+ apps catalog includes image generation (Flux, SDXL), video (Veo 2), search (Tavily, Exa), and upscaling tools. The knowledge system gives you persistent memory across sessions with semantic search and typed entries. Skills are reusable workflows you can pull from a registry or GitHub without installing. MCP connectors let you wire up external services. It's legitimately useful if you're already in the claude.ai ecosystem and want programmatic access to models and tools without leaving your chat context or writing API calls.
npx skills add https://github.com/belt-sh/cli --skill belt