Agree on that it should be composable. Even better if MCP tooling wouldn't yield huge amounts of output that pollutes the context and the output of one can be input to the next, so indeed that may as well be code.

Would be nice if there was a way for agents to work with MCPs as code, preview or debug the data flowing through them. At the moment it all seems not a mature enough solution and Id rather mount a Python sandbox with API keys to what it needs than connect an MCP tool on my own machine.