Does this work with the Firebase Admin SDK?

Yes, the skill includes patterns for both the client-side Firebase SDK and the server-side Admin SDK used in environments like Next.js Server Components.

Can I evolve my schema without breaking the app?

Yes, the skill outlines best practices for using optional fields and Zod defaults to handle existing documents during schema transitions without validation errors.

Why use Zod with Firestore?

Firestore is schemaless, meaning TypeScript types only exist at compile-time; Zod provides runtime validation to ensure data matches your expectations when reading or writing.

How does this handle document IDs?

The provided zodConverter pattern automatically injects the document ID and reference into the validated object for easier consumption in your application logic.

Zod Firestore Type Safety

Name: Zod Firestore Type Safety
Author: Agentient

byAgentient

0•

Database Management

Ensures end-to-end type safety and runtime validation for Firestore databases using Zod schemas and the withConverter API.

This skill bridges the gap between Firestore's schemaless nature and TypeScript's compile-time types by implementing Zod-based runtime validation at the application boundary. It provides standardized patterns for defining schemas, inferring types, and implementing generic converters for both client-side and server-side (Admin SDK) environments. It is particularly useful for developers building robust Firebase applications who need to prevent data corruption, handle schema evolution gracefully, and maintain a single source of truth for their data models across frontend and backend codebases.

Key Features

010 GitHub stars

02End-to-end type safety using Zod and Firestore's withConverter API

03Generic converter implementations for Firebase Client and Admin SDKs

04Automatic TypeScript type inference from Zod schemas

05Runtime validation for both reads and writes to prevent data corruption

06Best practices for schema evolution and handling breaking changes

Use Cases

01Implementing type-safe Server Actions and API routes with the Firebase Admin SDK

02Managing complex data migrations and schema versioning in Firestore

03Building production-grade React or Next.js applications with Firebase

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add agentient/vibekit zod-firestore-type-safety

For use in Claude.ai and ChatGPT

Download Skill