The Calibre Vercel integration allows you to leverage Pull Request Reviews without additional development work.

Calibre Pull Request Review triggered by a Vercel Deployment Preview

If you host your applications or sites on Vercel, and you use GitHub for hosting code, follow the steps in the Pull Request Reviews walkthrough to receive performance reports on your Pull Requests. Once a Vercel Deployment Preview is complete, Calibre will run a performance test and post it in a Pull Request comment.