Paste a JSON API response and generate ready-to-use assertion code for RestAssured, Playwright, or Cypress covering status codes, response body fields, and type checks.
Accepted input
Accepts any valid JSON object or array. Typically a raw API response body copied from DevTools, Postman, or the KalpLabs API Request Builder.
How to use
- Paste your JSON response into the input panel.
- Select your test framework: RestAssured (Java), Playwright (TypeScript), or Cypress.
- Generated assertions appear instantly in the output panel covering every top-level field.
- Copy the output and paste it directly into your test file.
Tips
- Use the API Request Builder to capture a live response, then click "Open in Assertion Generator" to pre-fill this tool.
- For nested fields, the generator creates dot-notation paths so review them against your actual object depth.
- RestAssured output uses Hamcrest matchers, while Playwright and Cypress use their native expect APIs.