type-safety-design

Validate TypeScript runtime data with TypeBox and Zod schemas.

Updated Mar 4, 2026
One-click install
npx skills add https://github.com/joyz0/kitz-ai --skill type-safety-design
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: type-safety-design
Source: https://github.com/joyz0/kitz-ai/tree/main/docs/legacy-skills/type-safety-design
Command: npx skills add https://github.com/joyz0/kitz-ai --skill type-safety-design

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Ensures that runtime data, configuration, and protocol messages conform to expected types and schemas to prevent runtime failures and protocol mismatches. It bridges compile-time TypeScript guarantees with runtime validation so that configuration, API payloads, and inter-service messages are both well-typed and validated.

Core Features & Use Cases

  • Schema authoring with TypeBox for runtime-aware schemas and Zod for configuration validation.
  • Runtime validation via generated AJV validators and explicit validation layers that return structured errors and repair suggestions.
  • Code and doc generation that emits TypeScript types, JSON Schema, client models, and API documentation from a single schema source.
  • Integration scenarios: validate loaded configuration files, enforce API contracts at gateway boundaries, generate client models for multi-language SDKs, and plug into a modular plugin system.
  • Performance & reliability: supports batching, caching of validation results, and schema modularization to limit validation overhead.

Quick Start

Use the type-safety-design skill to validate a TypeBox schema against incoming JSON data and generate corresponding TypeScript types and a JSON Schema document.

Frequently Asked Questions about type-safety-design

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

FAQPage Schema
How do I enforce runtime type safety for TypeScript API payloads?

Runtime type safety for TypeScript API payloads is enforced by bridging compile-time types with generated AJV validators and schema-driven validation layers. This ensures incoming runtime data conforms to expected schemas and returns structured errors for mismatches.

Can I generate TypeScript types and JSON Schema from a single TypeBox or Zod schema?

Yes, you can generate TypeScript types and JSON Schema from a single schema source. The schema-driven code generation feature emits TypeScript types, JSON Schema documents, and client models from either TypeBox or Zod schemas.

What's the best way to validate loaded configuration files with Zod in TypeScript?

Validating loaded configuration files with Zod involves using schema-driven enforcement to check runtime data against expected types. This prevents runtime failures by returning structured validation errors and repair suggestions for invalid configuration payloads.

Does this type-safety approach support batching and caching to optimize validation performance?

The type-safety validation approach supports batching and caching of validation results to optimize performance. It also utilizes schema modularization to limit validation overhead when processing large volumes of runtime data.

Why do I need runtime validation when my TypeScript codebase already has compile-time types?

Runtime validation is needed alongside compile-time types because TypeScript guarantees do not extend to external runtime data. Validating configuration files, API payloads, and inter-service messages against schemas prevents protocol mismatches and runtime failures.

How do I enforce API contracts at gateway boundaries using schema validation?

API contracts at gateway boundaries are enforced using schema validation to ensure protocol messages conform to expected types. This bridges compile-time TypeScript guarantees with runtime checks to prevent inter-service protocol mismatches.