Originally published on AI Tech Connect.
What you need to know There is a quiet tax buried inside almost every agent you have built on the Model Context Protocol, and most teams only notice it when the invoice arrives. Each tool you connect ships its full schema into the model's context. Each tool call the model makes returns a result that also passes back through context. Wire up a dozen integrations with a few hundred operations between them, run a multi-step workflow, and the model can burn through a hundred thousand tokens before it has produced a single line of useful output. The work is real, but most of the tokens are plumbing. Anthropic's engineering team put a name and a fix to this with a pattern they call code execution with MCP. The idea is deceptively simple: instead of the model making many direct tool calls — each…
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