DeployDoctor - Find Vercel deploy problems before you push

DeployDoctor scans a public GitHub repository and checks the code paths most likely to fail after a push to Vercel. It detects your stack and checks entrypoints, imports, server code, build configuration, dependencies, environment variables, hardcoded secrets, and Supabase or Prisma boundaries when your stack uses them. It reads metadata and source through the GitHub REST API without cloning or building the code.