When AI coding agents (Cursor, Claude Code, Windsurf) edit backend models or API routes in full-stack codebases, backend unit tests frequently pass while the frontend silently breaks in production: An agent modifies an API parameter or Pydantic/SQLAlchemy field in backend/routes. py . Backend te...
Source: [Dev.to](https://dev.to/zainulabideen02/why-ai-coding-agents-silently-break-full-stack-apps-and-how-we-solved-it-in-075ms-2haa)