According to this comment, there should be a way to pass arguments via POST in the request body. But looking at the code, I don't think there's a way to do it, but maybe I am missing something, any help would be appreciated.
The reason that I need to passing in the args via the body is due to a limitation on the length of URL. I have a large configuration object, and this causes the error
<body>
<h1><p>Bad Request</p></h1>
Request Line is too large (4492 > 4094)
</body>