ToolsThe story, in brief
We removed 80% of our agent’s tools
Vercel just shipped a file system agent that beats its text-to-SQL predecessor. 100% success rate. 80% fewer tools.
The KeyNews take
Why it matters
Vercel's design insight—stripping complexity and giving Claude direct file system access—challenges the conventional wisdom on agent architecture and suggests a faster path to production-grade AI tooling for developers.
The key facts
5 to knowVercel removed 80% of agent tools and improved success rate from 80% to 100%
New agent (d0 file system agent) uses single tool: arbitrary bash command execution
Fewer steps, fewer tokens, faster responses compared to text-to-SQL approach
Agent uses grep, cat, ls for file system navigation
Published Dec 22, 2025 on Vercel blog
Go to the source
Vercel Blogvercel.com
Publisher excerpt: It got better. We spent months building a sophisticated internal text-to-SQL agent, d0, with specialized tools, heavy prompt engineering, and careful context management. It worked… kind of. But it was fragile, slow, and required constant maintenance. So we tried something different. We deleted most…