We removed 80% of our agent’s tools

What this post added

This post details a significant architectural simplification for Vercel's text-to-SQL agent, 'd0'. The previous complex system with numerous specialized tools, heavy prompt engineering, and context management was replaced with a file system-based agent that leverages standard Unix utilities (`grep`, `cat`, `ls`) to interact with the Cube semantic layer. This change resulted in a 3.5x faster execution time, 37% fewer tokens used, and a 100% success rate across benchmarked queries, highlighting the benefits of 'addition by subtraction' and trusting the model's reasoning with well-structured data.