API Practice
API Testing Practice
Practice API contracts, auth, validation, permissions, status codes, and backend error handling in safe browser sandboxes.
Recommended start
Start with 3 practical API trainers
These free scenarios show the core workflow: send request, inspect response, and turn behavior into test coverage.
Scenario browser
What To Test Pro Pack API library
Unlock deeper security, auth, data, permissions, and reliability scenarios with the What To Test Pro Pack.
Library
55 total
Free
3 trainers
Pro
47 locked
Roadmap
5 planned
Free includes the 3 starter trainers. The What To Test Pro Pack unlocks the implemented advanced library in this browser.
Showing 12 of 55 total scenarios.
Login API Practice
Practice Login API contract checks, credential failures, account states, MFA, tokens, rate limiting, security, and observability.
Security/Auth, Tokens, Enumeration, Sessions
Start practiceCreate User API Practice
Practice request validation, response schema, auth, permissions, persistence, and security for a realistic Create User endpoint.
Contract, Validation, Persistence, Security
Start practicePassword Reset API Practice
Practice Password Reset API contract checks, reset requests, token validation, password policy, session invalidation, security, email side effects, and observability.
Security/Auth, Email, Token handling, Abuse prevention
Start practiceWant the full API practice library?
Unlock advanced Security/Auth, token, session, permissions, file upload, pagination, and API key scenarios.
Need personal help instead?
Advanced practice is self-serve. Coaching is for direct feedback on your API testing answers.