This is Part 3 of a series documenting a non-engineer CEO's attempts to connect Copilot Studio to LDX hub's StructFlow API. Part 1 — It didn't work yet. Part 2 — REST API, 8 errors, 3 hours, finally working. In Part 2, I got the REST API route working through Power Automate. It took 3 hours and 8 errors. The moment it worked, I immediately wondered: is there a simpler path? There is. It's called MCP. Instead of building a Power Automate flow, configuring polling loops, and debugging HTTP connectors — I connected LDX hub's MCP server directly to the Copilot Studio agent. The whole thing took about 2 hours, and most of that was figuring out two non-obvious settings. Here's the full account. Environment Microsoft Copilot Studio (Kawamura International tenant) LDX hub MCP Server ( https://gw.ldxhub.io/mcp ) Existing agent: Minutes Assistant (議事録アシスタント) Time required: ~2 hours Why MCP instead of Power Automate? The REST API route in Part 2 works.…