Every engineer building autonomous agent loops or heavy RAG pipelines eventually encounters a painful reality. It isn’t semantic hallucination. It isn’t baseline query latency. It’s the monthly API token bill. When feeding massive data arrays—such as database logs, product catalogs, or user histories—into an LLM context window, standard JSON introduces massive syntax noise. The endless repetition of dictionary keys ( "id" , "name" , "role" ) eats premium context space and drains op...