MCP Server to Marketplace App: Building Custom MCP Clients & Chatbots

This session explores how to build custom clients for the Sitecore Marketer MCP server in .NET and Next.js, following the official Model Context Protocol client development guidelines . Unlike traditional developer-focused clients such as VS Code or Cursor, these custom clients enable seamless web application integration, allowing both marketers and developers to execute LLM-driven actions in real time. We will demonstrate how to integrate the Next.js custom client into a Sitecore Marketplace app using the Marketplace SDK to deliver a fully interactive chatbot experience. Attendees will also gain insight into the Agent API, the core mechanism that powers MCP request handling and action execution. Key takeaways include: Building custom MCP clients in .NET and Next.js to follow MCP standards Creating real-time chatbots that interact with the MCP server to execute meaningful actions Integrating Next.js clients into Sitecore Marketplace apps using the Marketplace SDK and Vercel AI SDK with Marketer MCP Server Understanding authentication, common challenges, and tools for MCP integration Evaluating why custom clients are critical for web and Marketplace scenarios compared to traditional developer clients By attending this session, participants will gain hands-on knowledge on designing, implementing, and deploying custom MCP clients, enabling advanced workflows, real-time interactions, and Marketplace-based solutions that empower both developers and marketers.