API Request Builder
Requests are sent directly from your browser to the target API, including headers and body.
Request configuration
Examples only fill the input. JSONPlaceholder simulates POST requests without saving them.
Response
What is API Request Builder?
API Request Builder turns method, URL, headers, and body values into a complete HTTP request that can be reviewed before it is sent. It is useful for exploring a new endpoint, reproducing a backend issue, or checking how authentication and content-type headers affect an API response without first creating a separate test project.
How to use API Request Builder
Configure the request method, URL, headers, and body as needed, then execute the request and inspect the returned result.
When is API Request Builder useful?
API Request Builder is useful when testing an endpoint, reproducing a client request, checking headers, or experimenting with an API without writing a separate script.
Example
A practical example is sending a POST request with a JSON body to a development endpoint and checking the returned status and response.
Practical notes
Begin with a harmless GET request, then add headers and request data incrementally. Never place production tokens or private credentials into a request unless you trust the destination, and verify the target URL before sending state-changing POST, PUT, PATCH, or DELETE operations.