API Request Builder

Build cURL, fetch, axios, and Python API requests with custom headers and body. Free online HTTP request generator for developers.

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Request Configuration

Generated Code

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Understanding HTTP Methods

HTTP defines a set of request methods that indicate the desired action for a resource. Choosing the right method is essential for designing clean, predictable APIs.

GET

Retrieves a resource from the server. GET requests should be safe and idempotent — calling them multiple times should not change server state.

POST

Creates a new resource on the server. POST is not idempotent — submitting the same request twice may create two resources.

PUT

Updates an existing resource by replacing it entirely with the request body. PUT is idempotent — repeating it yields the same result.

PATCH

Applies partial modifications to a resource. Unlike PUT, PATCH only sends the fields that need to change, making it more efficient for large resources.

DELETE

Removes a resource from the server. A successful DELETE may return a 204 No Content or a representation of the deleted resource.

Frequently Asked Questions

An API request builder is a developer tool that generates ready-to-use HTTP request code in multiple languages and formats. You enter the endpoint URL, method, headers, and body, and the tool outputs cURL commands, JavaScript fetch calls, Python requests code, and Axios configurations.

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