deco CMS is an open‑source Context Management System and control plane for building, running, and monetizing AI applications. It unifies data, tools, and models via MCP‑native connectors, provides role‑based access control, budgets, and full observability with logs and traces, and ships agents, workflows, and UIs to the edge. Developers use a TypeScript SDK and Git‑native workflow, while business users prototype in natural language. A marketplace enables reusable modules and per‑run wallet billing.