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So how does MCP differ from a regular library like aisuite or vercel ai sdk?

Regular SDK lib: - Integration Effort: just like MCP - Real-Time Communication - Sure - Dynamic Discovery - obviously. just call refresh or whatever - Scalability - infinite, it is a library - Security & Control - just like mcp

i trully don't get it

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I suspect that an MCP is just a rebranded API. We have also seen these sorts of extensibility mechanisms before. Browser extensions, Object Linking and Embedding, Dynamic Data Exchange, and Visual Studio Code extensions are all examples of having a standard API which allows lots of different things to plug into it.

Beyond the developer, the user massively benefits from MCP. Like you said, using any other SDK to build is a very valid approach but then you are tied down to a single client that you have built on that SDK.

If you would like to switch clients, then you have build it yourself. MCP solves this very well since, any MCP supported client can use the same tools/resources that you have built.

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