How does this handle API authentication?

The skill provides patterns for both Bearer token authentication (via headers) and cookie-based authentication, allowing you to test protected endpoints effectively.

Does this skill help with frontend mocking?

Absolutely. It includes templates for intercepting network requests in the browser to return mocked data, simulate server errors, or add network delays.

Does Playwright require additional packages for API testing?

No, Playwright includes native API testing capabilities. However, this skill suggests using Ajv if you wish to perform advanced JSON schema validation.

Can I use this skill for GraphQL APIs?

Yes, the skill provides specific implementation patterns for GraphQL queries and mutations, including headers for authenticated requests.

API Testing with Playwright

Name: API Testing with Playwright
Author: adaptationio

byadaptationio

0•

Security & Testing

Automates REST and GraphQL API testing, response validation, and endpoint mocking using Playwright's native capabilities.

This skill equips Claude with specialized patterns for comprehensive API testing using the Playwright framework. It enables developers to efficiently write tests for REST and GraphQL endpoints, implement robust authentication flows, and validate JSON schemas using Ajv. Beyond standalone testing, it provides sophisticated mocking strategies for E2E scenarios, allowing for the simulation of server errors, response delays, and multipart file uploads to ensure high-quality API integration and reliability across the entire development lifecycle.

Key Features

01Built-in authentication patterns for Bearer tokens and cookies

02GraphQL query and mutation testing with variable handling

03Advanced API mocking for stable E2E testing environments

04Comprehensive REST method support (GET, POST, PUT, DELETE)

05JSON schema validation using Ajv for response structure accuracy

060 GitHub stars

Use Cases

01Automating integration tests for microservices and RESTful APIs

02Mocking external API dependencies to prevent CI/CD pipeline flakiness

03Validating complex GraphQL API schemas and data mutations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add adaptationio/skrillz api-testing

For use in Claude.ai and ChatGPT

Download Skill