Cryptographer Criticizes Local MCP Server Design
matthew_d_green · x · 2026-07-20
Matthew Green believes that while AI agent designers praise running local MCP servers to give models native skill sets, this design lacks actual testing (dogfooding).
He pointed out that agents themselves do not want these clunky local servers. More importantly, users often have to restart the session for the agent to invoke the MCP server, pushing the tool-calling process straight into a usability wall and severely degrading the experience.
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