Verified:GitHub

api-contract-normalizer

Normalizes API response patterns including pagination format, error codes, statuses, envelopes, and versioning across endpoints.

1|Updated Nov 6, 2025

Search Tags:#typescript #api #middleware #standardization #contract #response format

Ready to run

npx skills add https://github.com/zinohome/CozyChat --skill api-contract-normalizer

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: api-contract-normalizer
Source: https://github.com/zinohome/CozyChat/tree/main/.claude/skills/api-endpoint-generator
Command: npx skills add https://github.com/zinohome/CozyChat --skill api-contract-normalizer

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill addresses the inconsistency in API response formats, making it difficult for developers to integrate with and maintain different services.

Core Features & Use Cases

Standardized Responses: Enforces a uniform structure for success and error responses across all API endpoints.
Pagination & Error Handling: Defines clear standards for pagination metadata and error codes/messages.
Use Case: Ensure all your microservices return data in a predictable JSON format, including consistent pagination details and error reporting, simplifying frontend development and API management.

Quick Start

Use the api-contract-normalizer skill to define a standard response envelope for your API.

Frequently Asked Questions about api-contract-normalizer

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

FAQPage Schema

How do I standardize API response formats across multiple microservices?▼

Standardizing API response formats involves enforcing a uniform JSON structure for success and error responses across all endpoints. This includes defining consistent pagination metadata, error codes, status codes, and a shared response envelope to simplify frontend integration.

What is an API response envelope and why do I need one?▼

An API response envelope is a standardized JSON wrapper that unifies how success and error data are returned. You need one to ensure predictable API responses, making it easier for frontend developers to parse data, handle errors, and manage pagination metadata consistently.

How do I handle API pagination and error structure standardization in TypeScript?▼

Handling API pagination and error structure standardization in TypeScript involves defining shared types for pagination metadata and error codes. You enforce these standards across endpoints using middleware utilities that intercept and reformat responses into a consistent contract.

Can I use middleware to enforce a consistent API contract across existing endpoints?▼

Yes, you can use middleware to enforce a consistent API contract across existing endpoints. Middleware intercepts outgoing responses to standardize the response envelope, error structure, and pagination format, allowing you to unify APIs without rewriting core endpoint logic.

What is the best way to migrate microservices to a unified API response format?▼

The best way to migrate microservices to a unified API response format is to follow a phased migration plan. You progressively introduce shared TypeScript types, standardize pagination and error structures, and apply response middleware endpoint by endpoint to ensure API consistency.