Incredibly useful for our SaaS. We are a niche CRM and it's very useful for our non-technical users to be able to connect our platform's data to Claude/Copilot which they then combine with other MCPs.

Advantages over our normal API: - Much easier to provide LLM-specific explanations and descriptions to all of the tools and parameters - None of our clients know what a CLI is - We re-use our MCP for our own platform's agent which gives it a neatly defined list - It handles the full OAuth flow in the application

I'll admit though it is VERY similar to a REST API, and I could see them merging at some point.