I have seen ~10 IQ points drop with each MCP I added. I have replaced them all with either skill-like instructions or curl calls in AGENTS.md with much better "tool-calling" rate.

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verdverm 20 hours ago | parent [-]

That's a context pollution problem, not an MCP problem.

https://www.anthropic.com/engineering/advanced-tool-use

	▲	asadm 17 hours ago \| parent [-]
		building a rag for searching correct MCP is a band-aid.