I'll kick myself for not remembering, but there was a fantastic article which suggested that MCP works at org level when unified, safe, access to internal utility APIs need to be given to non-technical staff who do use internal agent tools. Codify your workflow(s) via skills and share across instances, anything that needs context aware API access should be mcp...
But what is the advantage of MCP compared to having the agents access the API directly?
Do you mean directly == raw shell access on your production server?