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Text-to-text LLMs can only do one thing: output text.

These other capabilities that chat tools provide are actually extras built on top of the output sequence:

- reading and editing files

- searching the web

- executing commands

If your favorite chat tool (ChatGPT, Gemini, Claude, Cursor, whatever) already has all the tools you want, then you don't need to add more via an MCP server.

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Note that text includes CLI commands so technically they can do anything that way. But an MCP might be able to hold state about something (eg keep an ssh connection open), and it also might be easier to teach new things than Claude itself.

I've also seen a lot of amateur ones with grandiose claims about how they enable AGI thinking ability by trying slightly harder to plan things.

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