Client-side validation checks user input in the client before sending a request. In SwaggerUI, parameter rules from swagger.json automatically reject clearly invalid values before a server round trip. section 6.1.4
For the board-game API, client-side validation provides:
- Immediate feedback when a GET /BoardGames parameter contains the wrong type, such as text instead of an integer. section 6.1.4
- Fewer useless requests and a faster, clearer presentation layer experience. section 6.1.4
- No security guarantee: users can bypass browser controls, so the API must validate every input on the server. section 6.1.4
Testing GET /BoardGames
Open the SwaggerUI endpoint, expand GET /BoardGames, choose Try It Out, enter invalid values, and select Execute. SwaggerUI displays corrections without making the request. section 6.1.4
{
"name": "PageIndex", #1
"in": "query",
"schema": {
"type": "integer", #2
"format": "int32", #3
"default": 0 #4
}
},
{
"name": "PageSize", #5
"in": "query",
"schema": {
"maximum": 100,
"minimum": 1,
"type": "integer", #6
"format": "int32", #7
"default": 10 #8
}
}
The generated parameter schema shows client-visible types, formats, defaults, and page-size limits used by SwaggerUI. section 6.1.4
