auth-schema-generator

Generate Better Auth user schema configurations with custom fields and TypeScript types.

Updated Dec 5, 2025
One-click install
npx skills add https://github.com/muhammadhamza718/Hackathon-Book --skill auth-schema-generator
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: auth-schema-generator
Source: https://github.com/muhammadhamza718/Hackathon-Book/tree/main/.claude/skills/auth-schema-generator
Command: npx skills add https://github.com/muhammadhamza718/Hackathon-Book --skill auth-schema-generator

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Setting up authentication often requires aligning backend models, database schemas, and TypeScript types for user data. This Skill automates that process by generating Better Auth configuration, TypeScript types, and interface definitions for custom user fields.

Core Features & Use Cases

  • Generates Better Auth user configuration with additionalFields
  • Exports inferred TypeScript types for Session and User
  • Creates TypeScript interfaces for user profiles

Quick Start

In your project, configure a new set of custom user fields and let the Skill generate the necessary auth.ts configuration and types.

Frequently Asked Questions about auth-schema-generator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate TypeScript types and Better Auth configuration for custom user fields?

Generate TypeScript types and Better Auth configuration by defining custom additionalFields for your user schema. The Skill produces a complete auth.ts configuration file with inferred Session and User types, plus TypeScript interfaces for your custom profile fields, eliminating manual type alignment between database schema and code.

Can I use Better Auth with custom user profile fields in a new project?

Yes. Better Auth supports custom user profile fields through additionalFields configuration. This Skill automates setup by generating your auth.ts file with field types, defaults, and validation rules, so you can add personalized user data without manually writing schema definitions and type exports.

What's the best way to keep database schemas, authentication models, and TypeScript types in sync?

Auto-generate your authentication schema and types from a unified configuration. This Skill generates Better Auth setup, TypeScript interfaces, and inferred types from your custom field definitions, ensuring your database schema, auth logic, and type definitions stay consistent without manual duplication.

How do I extend Better Auth with additional user data fields and maintain type safety?

Define your additional user fields with types and defaults, then generate the complete configuration. The Skill produces a typed auth.ts file with exported Session and User types plus custom interfaces, giving you type-safe access to your extended user data throughout your application.

When should I use schema generation for authentication instead of manual configuration?

Use schema generation when implementing Better Auth with custom user fields, adding personalized profile data, or setting up complex authentication systems. Manual configuration risks type mismatches and schema drift; generation enforces validation and security by deriving types directly from your field specifications.

Does this work for validating required fields and security constraints in user data?

Yes. The Skill enforces validation and security considerations when generating your auth schema. It respects field types, defaults, and constraints defined in your additionalFields, so your generated configuration includes built-in validation and security rules for custom user data.