You can grab query parameters out of any val that is operating using the Web API using URL#searchParams.

This val demonstrates how to grab a single name parameter, as well as convert the entire query string into an object. It returns the all the query parameters found as a json response.

https://stevekrouse-queryparams.web.val.run/?name=Steve&foo=bar

{
  "name": "Steve",
  "all": {
    "name": "Steve",
    "foo": "bar"
  }
}