API Testing

API Testing is a Quality skill for Claude Code, published by secondsky in claude-skills.

214 stars31 forkson secondsky/claude-skillsAdded 2026/09/04+1% in starsRepository updated 2026/09/03

claude-codeclaude-code-commandsclaude-code-hooksclaude-code-pluginclaude-code-pluginsclaude-code-skillclaude-code-skills

Install in seconds

Install API Testing

Copy API Testing into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/secondsky/claude-skills/tree/main/plugins/api-testing/skills/api-testing ~/.claude/skills/api-testing

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/secondsky/claude-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: plugins/api-testing/skills/api-testing/SKILL.md in secondsky/claude-skills
Installs to: ~/.claude/skills/api-testing
Collection: One of 24 skills cataloged from this repository
Category: Quality — 1557 skills

What API Testing does

API Testing covers HTTP API tests with Supertest in TypeScript and httpx/pytest in Python. Use it to test REST and GraphQL endpoints, authentication, validation, file uploads, and error handling.

API Testing is cataloged under Quality on DirSkills. API Testing comes from a repository tagged claude-code, claude-code-commands, claude-code-hooks, claude-code-plugin and claude-code-plugins.

Documentation

README

Excerpt

# Using Bun
bun add -d supertest @types/supertest

# or: npm install -D supertest @types/supertest

Basic Setup

This is the opening of the README. Read the full README on GitHub.

Frequently asked about API Testing

What else does secondsky publish alongside API Testing?
API Testing is one of 24 skills that DirSkills catalogs from secondsky/claude-skills, the repository it ships in. Its siblings there include API Authentication, API Changelog & Versioning and API Contract Testing. Each one is a separate skill with its own page in this directory, installs the same way API Testing does, and is maintained by secondsky in that same repository. The rest of the collection is listed on the secondsky/claude-skills page.
How does API Testing compare to other Quality skills?
API Testing ranks #1425 by stars among the 1557 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of API Testing against them. Open each page to compare what they document and how they install.