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typed-service-contracts

Enforce end-to-end type safety for frontend-backend API contracts with Zod and TypeScript.

Updated Apr 24, 2026
Search Tags:#typescript#drizzle#zod#frontend-backend#server-actions#api-contracts
One-click install
npx skills add https://github.com/ultramaxoAI/UltramaxoAI --skill typed-service-contracts-ultramaxoai
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: typed-service-contracts
Source: https://github.com/ultramaxoAI/UltramaxoAI/tree/main/.agent/skills/typed-service-contracts
Command: npx skills add https://github.com/ultramaxoAI/UltramaxoAI --skill typed-service-contracts-ultramaxoai

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Enforce end-to-end type safety for frontend-backend API contracts; catch contract mismatches at build time and prevent runtime surprises.

Core Features & Use Cases

  • Shared types across frontend and backend via a single source of truth using Zod schemas and TypeScript types.
  • API route contracts and server actions with input validation and typed responses.
  • Drizzle schema alignment with explicit mappers to keep database and API types in sync.
  • Client integration with typed fetch wrappers and strictly-typed envelopes for responses.

Quick Start

Define a shared Zod schema and export its inferred TypeScript type in a central location used by both frontend and backend.

Frequently Asked Questions about typed-service-contracts

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

FAQPage Schema
How do I enforce type-safe API contracts between frontend and backend in TypeScript?▼

Type-safe API contracts enforce shared TypeScript types and Zod validation schemas across frontend and backend, catching contract mismatches at build time to prevent runtime surprises. You define a centralized Zod schema to serve as a single source of truth.

How do I validate server actions and API route inputs using Zod?▼

You validate server actions and API route inputs using Zod by defining centralized schemas that infer TypeScript types. This provides runtime validation and typed responses, ensuring frontend requests match backend expectations before execution.

Can I keep Drizzle database schemas aligned with my API types?▼

Yes, Drizzle database schemas can be aligned with API types using explicit mappers. This explicit DB-API type alignment keeps your database schema and API response types synchronized across your project.

What is the best way to share types between frontend and backend?▼

The best way to share types is defining a shared Zod schema in a central location used by both frontend and backend. You export the inferred TypeScript type from this schema to establish a single source of truth.

How do I create typed fetch wrappers for API responses?▼

Typed fetch wrappers integrate with strictly-typed response envelopes derived from your shared Zod schemas. This ensures client-side API calls receive strongly typed data matching the backend's defined API contracts.

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