What is {{$guid}} used for in Postman?
Postman's official website states that Postman has a few dynamic variables. My question is about:
{{$guid}}: Adds a v4 style guid
What kind of variable is {{$guid}}? How can it be used in test scripts for API requests?
Answer
GUID is the acronym for "Globally Unique Identifier". A GUID is mainly used to produce hexadecimal digits with groups separated by hyphens for uniqueness purposes, for example:
b3d27f9b-d21d-327c-164e-7fb6776f87b0
In postman you can use this to generate and send a random GUID to your api as required:
{
"id": "{{$guid}}",
}
On Send would produce(with the random example above):
{
"id": "b3d27f9b-d21d-327c-164e-7fb6776f87b0",
}