Countries API | AI Testing Playground

AI Test Generation

Leverage AI to create comprehensive API tests with realistic datasets, edge cases, and validation scenarios automatically.

Machine Learning Smart Testing

API Testing Lab

Practice API testing fundamentals: response validation, error handling, schema conformance, and performance testing in a safe sandbox.

REST API Swagger UI

Smart Test Data

Generate consistent, realistic test data for automated workflows. Perfect for CI/CD pipelines and regression testing suites.

JSON Automation

Interactive API Examples

Click any example to copy to clipboard:

GET /countriesapi/countries Click to copy

Retrieve all countries with optional filtering

GET /countriesapi/countries?code=FR Click to copy

Filter countries by ISO code

POST /countriesapi/add_country Click to copy

Create new country entries


                    {

                      "name": "Germany",

                      "code": "DE",

                      "capital": "Berlin",

                      "area": 357386,

                      "population": 83240525

                    }

Ready-to-Use Assets

Sample Data (6 countries)

France (FR) - 67.3M
Lebanon (LB) - 6.8M
UAE (AE) - 9.9M
Germany (DE) - 83.2M
Japan (JP) - 125.6M
Brazil (BR) - 215.3M

Form Templates

new_country.html
update_country.html
delete_country.html

Brasília

Population

215.3M

URL Parameters Demo

Test dynamic parameter handling:

Try: /countriesapi/?sample=hello&mode=demo&user=developer

Add parameters in the url as key value and they will be shown here below.

Parameters in URL :

Quick Actions

Jump right into testing:

View All Countries Get Country by ID Create New Country

Update

Delete