Scripting REST API in LoadRunner

With example for bot GET and POST

GET:
You will have a URL with all variables in it.
Test it manually in SOAP UI
Try to observe the difference in passed and failed transaction to add conditon in LR script

In Load Runner:
Take Protocol as Web HTTP/HTML
Get web_custom_request from View - Step Tool Box.
Put URL and Click OK.
Parameterize the variable in URL

web_reg_save_param("c_response","LB=","RB=",LAST);
    web_reg_save_param("c_employeeName","LB=\"employee_name\":\"","RB=\",\"",LAST);
   
    lr_start_transaction("Start_transaction_1");

    web_custom_request("web_custom_request",
        "URL=http://dummy.restapiexample.com/api/v1/employee/{p_EmployeeId}",
        "Method=GET",
        "TargetFrame=",
        "Resource=0",
        "Referer=",
        "Body=",
        LAST);
lr_end_transaction("Start_transaction_1", LR_AUTO);


POST:
You will have a URL with all variables in it.
Test it manually in SOAP UI
Try to observe the difference in passed and failed transaction to add conditon in LR script

In Load Runner:
Take Protocol as Web HTTP/HTML
Get web_custom_request from View - Step Tool Box.
Put URL, request and convert it in C format bt right click option
Parameterize the input variables

web_reg_save_param("c_full","LB=","RB=",LAST);
    web_reg_save_param("c_id","LB=\"id\":\"","RB=\"}",LAST);
   
    lr_start_transaction("POST_Transaction");
    web_custom_request("web_custom_request",
        "URL=http://dummy.restapiexample.com/api/v1/create",
        "Method=POST",
        "TargetFrame=",
        "Resource=0",
        "Referer=",
        "Body={\"name\":\"{p_name}\",\"salary\":\"{p_salary}\",\"age\":\"{p_age}\"}",
        LAST);
    lr_end_transaction("POST_Transaction", LR_AUTO);