According to MuleSoft’s recommended REST conventions, which HTTP method should an API use to specify...

According to MuleSoft’s recommended REST conventions, the HTTP method GET should be used to specify how API clients can request data from a specified resource. The GET method is designed to retrieve data from a server at the specified resource. It is one of the most common HTTP methods used in RESTful APIs, ensuring that data retrieval is performed without any side effects on the server or resource.

References:

MuleSoft REST API Design Best Practices

HTTP Methods in RESTful Services