The Advanced path takes you from building your first Opal tool to operating agents that reach across your entire stack. You will design and register production-grade tools, attach them to specialized and workflow agents, and tune quality through Output Evaluation, Execution Guardrails, and the Execution Advisor. You will connect Opal to external systems through remote MCP connectors (GitHub, Atlassian, Contentful, Zapier), and drive Optimizely CMS from three surfaces: in-Opal system tools, the CMS SaaS MCP, and the JavaScript SDK. You will also wire Opal directly into a CMS 13 (PaaS) .NET project. By the end, you can ship agents that safely read, write, and act on real content across Optimizely and third-party systems.