
API Validation Complete Cheat Sheet
Published by SoftwareTestPilot
PDF • 10 pages • Cheat Sheet • All Levels • API Testing
Published 11 October 2026 • Updated 11 October 2026
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10-slide cheat sheet on what to validate in an API response: status codes, headers, JSON schema, values, invalid inputs, access control, pagination and a Playwright example.
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Overview
10-slide cheat sheet on what to validate in an API response: status codes, headers, JSON schema, values, invalid inputs, access control, pagination and a Playwright example. Published by SoftwareTestPilot.
What you'll learn
- Build a complete checklist for API response validation
- Check status codes, headers and JSON schema
- Verify values and business rules, not just structure
- Test invalid inputs and authentication/authorization cases
- Write an API check with Playwright
Topics covered
- api-testing
Table of contents
- What should you validate?
- Status codes and headers
- Validate the JSON schema
- Check values and business rules
- Try invalid inputs
- Validate access control
- Lists, filters and pagination
- A practical Playwright check
- Save your validation checklist
Tools covered
- Playwright
- Postman
Skills covered
- API Testing
Who this resource is for
- API Tester
- Automation Tester
- SDET
Format and what you get
- A downloadable PDF you can read on phone or laptop.
- Included in the QA Notes Vault: one payment unlocks every note in the Vault, with lifetime access to it.
- Download after signing in with the account that paid. Refunds follow our refund policy.
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