promjax is a tiny JavaScript library that wraps the native XMLHttpRequest in a Promise‑based API, letting developers make asynchronous HTTP requests with a clean, chainable syntax. It caters to front‑end developers who want simple, configurable Ajax calls (custom headers, transforms, success/error callbacks, etc.) without dealing directly with XHR events, and requires a Promise polyfill (e.g., the bundled spromise) for older environments.