rsc-shield – A security firewall for React Server Components

Summary: rsc-shield is a lightweight utility that sanitizes server-side data in Next.js Server Actions to prevent accidental leaks of sensitive information like passwords or internal IDs. It ensures secrets never reach the client by validating and sanitizing data before transmission.

What it does

rsc-shield applies strict schema validation and recursive sanitization to server data, supporting React's Taint API to block non-serializable or sensitive information from crossing to the client.

Who it's for

Developers using React Server Components and Next.js Server Actions who need to secure backend data from accidental exposure.

Why it matters

It prevents sensitive backend data leaks by enforcing data sanitization before server responses reach the client.