typed-service-contracts

Define and manage Spec & Handler contracts for TypeScript services.

12|1|Updated Mar 15, 2026
One-click install
npx skills add https://github.com/jorgeasaurus/agent-skills --skill typed-service-contracts-jorgeasaurus
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: typed-service-contracts
Source: https://github.com/jorgeasaurus/agent-skills/tree/main/typed-service-contracts
Command: npx skills add https://github.com/jorgeasaurus/agent-skills --skill typed-service-contracts-jorgeasaurus

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires zod, ts-mockito, ts-error-message, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

Ensures that TypeScript services are type-safe and robust, reducing the likelihood of runtime errors and providing clear input-output expectations for services.

Core Features & Use Cases

  • Type-Safe Service Creation: Defines a Spec & Handler pattern to enforce strict contract-based interactions.
  • Error Handling: Implements Result Pattern for clear and explicit error handling.
  • Use Case: Ideal for complex applications where a predictable API is essential for development, such as in creating CLIs, libraries, or large business logic components.

Quick Start

Execute a new typed service using the typed-service-contracts skill with the runService command and specify the input details.

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 service contracts in TypeScript?

Type-safe service contracts in TypeScript are enforced using a Spec & Handler pattern, which defines strict input-output expectations to reduce runtime errors. This approach ensures predictable API interactions for complex business logic and libraries.

What is the Result pattern for error handling in TypeScript services?

The Result pattern for error handling in TypeScript services provides explicit, clear error management without relying on exceptions. It defines strict contract-based interactions, ensuring services handle failures gracefully and maintain predictable execution flows.

How do I create a type-safe CLI architecture in TypeScript?

A type-safe CLI architecture in TypeScript is created by applying the Spec & Handler pattern to define robust service contracts. This enforces strict input-output expectations and clear error handling, improving reliability for command-line development.

Can I use Zod for contract-based development in TypeScript services?

Yes, Zod is used for contract-based development in TypeScript services to validate service specifications. Combined with the Spec & Handler pattern, it enforces strict type safety and manages errors gracefully for complex business logic components.

Does the Spec & Handler pattern work for complex business logic?

The Spec & Handler pattern works effectively for complex business logic by defining robust, type-safe contracts. It enforces predictable API interactions and implements explicit error handling, which improves code maintainability and reliability in large applications.

Why use contract-based development for TypeScript libraries?

Contract-based development for TypeScript libraries ensures robust type safety and reduces runtime errors by defining strict service contracts. It provides clear input-output expectations, making complex APIs predictable and easier to maintain.