MCP was much more important when agents weren’t able to accurately make tool calls.

Nowadays, these agents are more capable and I think you can replace MCP (which is a pain on macOS), with simple CLI tools and expose them to agents via system prompt, skills, or other API documentation.

How well does that work in enterprise setups?

Well assuming a browser is able to access whatever enterprise thing, the LLM can emulate being one using apps like curl.

why is MCP a pain in Macos?