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typescript-type-safe-api-contracts

Create type-safe API contracts with TypeScript and Zod runtime validation.

2|1|Updated Jan 31, 2026
Search Tags:#typescript#frontend#patterns#zod#type-safety#api-contracts#runtime-validation
One-click install
npx skills add https://github.com/Agentient/vibekit --skill typescript-type-safe-api-contracts
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: typescript-type-safe-api-contracts
Source: https://github.com/Agentient/vibekit/tree/main/plugins/frontend-tools/skills/typescript-type-safe-api-contracts
Command: npx skills add https://github.com/Agentient/vibekit --skill typescript-type-safe-api-contracts

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Type-safe API contracts reduce runtime errors by enforcing explicit return types and integrating Zod schemas for runtime validation, enabling safer frontend-backend boundaries.

Core Features & Use Cases

  • Explicit Return Types: ensure functions return predictable, typed results across modules.
  • Zod Integration: define schemas that are used for runtime validation and TypeScript inference.
  • Generic Response Wrappers: unify success/error shapes to simplify API consumption.

Quick Start

Configure a new API contract by defining an explicit TypeScript return type and a Zod schema for the input, then wrap the outcome in a generic ApiResponse.

Frequently Asked Questions about typescript-type-safe-api-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?▼

You can enforce type-safe API contracts by applying explicit return types, integrating Zod schemas for runtime validation, and wrapping outcomes in generic ApiResponse wrappers across boundaries.

What is the best way to add runtime validation to TypeScript API responses?▼

The best way to add runtime validation is by defining Zod schemas that both validate the API input at runtime and provide TypeScript inference for static type checking.

How do I create a generic API response wrapper for handling success and error shapes?▼

Create a generic ApiResponse wrapper to unify success and error shapes across your API, simplifying consumption and ensuring consistent type safety for all endpoint outcomes.

Does Zod work with TypeScript for inferring types from runtime validated schemas?▼

Yes, Zod integrates directly with TypeScript by defining schemas used for runtime validation while simultaneously driving TypeScript inference to enforce static type safety.

Why do I need runtime validation for API contracts if I already use TypeScript?▼

TypeScript only checks types at compile time, so runtime validation via Zod is necessary to catch mismatched API payloads at the frontend-backend boundary where actual data arrives.

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