The proxy delivers simultaneous token cost reduction and accuracy improvement over plain JSON — without requiring any changes to existing MCP servers — by replacing a format that causes LLM comprehension failures at scale with one that scores 90.7% vs. JSON's 53.6% on the same data.
The benchmark demonstrates that a novel wire format can be read and written by frontier LLMs with zero training and a minimal primer, while substantially outperforming JSON on both comprehension accuracy and token efficiency at scale.