Model Context Protocol (MCP) for Node-RED?

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I am a bit confused about the nomenclature of the term 'mcp' - reading the documentation - isn't this just a 'tool' that can be defined for the LLM to use ? Or should I read it as a 'standardization' for interacting with tools ?

I see that there are many 'mcp servers' available which all appear to be just 'tools' ?

Reading a bit more, node-red appears to be a good candidate to 'be' the mcp 'server' for many tasks.