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Dev.to
6/18/2026
The Playwright Playbook — Part 4: API Testing — The Underrated Superpower

The Playwright Playbook — Part 4: API Testing — The Underrated Superpower

Short summary

Playwright enables raw HTTP API testing without a browser, allowing API and UI tests in one TypeScript suite with shared CI pipelines. Part 4 demonstrates three API testing modes, building JWT-authenticated clients, and chaining API calls into UI assertions for fast, reliable testing without flaky UI dependencies.

  • •Playwright can make raw HTTP API requests alongside UI tests in the same TypeScript runner
  • •Three modes available: isolated request fixture, page.request with shared cookies, or configured APIRequestContext
  • •Practical example builds JWT auth client and chains API seeding into UI assertions for speed and reliability

Generated with AI, which can make mistakes.

#certification-education#open-source#ai-tools
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