api-test-suite-generator

Generate API test suites from route definitions for Express, Next.js, or Fastify.

Updated Jan 21, 2026
One-click install
npx skills add https://github.com/vecear/Nipponverb --skill api-test-suite-generator-vecear
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: api-test-suite-generator
Source: https://github.com/vecear/Nipponverb/tree/main/.claude/skills/api-test-suite-generator
Command: npx skills add https://github.com/vecear/Nipponverb --skill api-test-suite-generator-vecear

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires vitest, commander, supertest, zod, and includes scripts (resource) components.

What problem does it solve?

Generating robust API tests from route definitions to accelerate development and improve reliability, while keeping tests in sync with API changes.

Core Features & Use Cases

  • Generate test suites for Express, Next.js, Fastify, or any API routes using Jest, Vitest, or Supertest.
  • Create setup, fixtures, integration tests, and contract tests with comprehensive edge-case coverage.
  • Use Case: When a new route is added, automatically generate a complete test suite to validate behavior and contracts.

Quick Start

Run the generator to scan your routes and emit a ready-to-run tests scaffold.

Frequently Asked Questions about api-test-suite-generator

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

FAQPage Schema
How do I automatically generate API test suites from route definitions?

You can automatically generate API test suites by scanning your route contracts and emitting a ready-to-run test scaffold. This process creates integration tests, contract tests, and edge-case coverage directly from your defined API routes.

Can I use Vitest or Jest to test Express and Fastify API routes?

Yes, you can use Vitest or Jest to test Express and Fastify API routes. The generator supports these test frameworks to emit tests, fixtures, and setup utilities for integration and contract testing.

What do I need to provide to generate integration tests and contract tests?

You need to provide route contracts, select a test framework like Vitest or Jest, and run the script-based workflow. This setup emits comprehensive integration tests, contract tests, and edge-case coverage for authentication and validation.

Does API test generation include edge-case coverage for authentication and error handling?

Yes, API test generation includes edge-case coverage for authentication, validation, and error handling scenarios. The generated test suites validate behavior and contracts to keep tests in sync with API changes.

What is the best way to keep API tests in sync with route changes?

The best way to keep API tests in sync is to auto-generate test suites from route definitions. When a new route is added, the generator creates a complete test suite to validate behavior and contracts automatically.

Does generated API testing work with Next.js API routes and Supertest?

Yes, generated API testing works with Next.js API routes and Supertest. The generator scans your Next.js routes and emits a test scaffold using Supertest for integration and contract testing.