Building a Custom API Testing Framework Using Playwright and TypeScript

1. Introduction & API Testing Strategy

While Playwright is widely known for UI automation, its built-in API request context provides a lightweight, highly efficient framework for REST API testing without needing Postman or RestAssured.

Executing API tests within Playwright allows for seamless integration tests—such as generating test data via API requests before executing end-to-end browser workflows.

2. Setting Up the Base API Request Context (playwright.config.ts)

Configure the base URL, headers, and authentication tokens globally within the configuration file:

Building a Custom API Testing Framework Using Playwright and TypeScript

Related reading

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The Playwright Playbook — Part 3: Multi-User, Multi-Tab & Browser Context…

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