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MCP seems valuable in that it teaches the llm about oauth. So you can do server based tool calls.

Before that you had to install each cli you wanted and it would invariably be doing some auth thing under the covers.

Took calling was certainly the big llm advantage but “hey tools should probably auth correctly” is pretty valuable.



I would argue MCP is technically a "tool calling" approach, albeit more specific.


It is, it's just a very specific approach, and it's simultaneously a bit underspecified and a bit too prescriptive.




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