# Query Parameters Example This is a basic example that demonstrates working with URL query parameters. It includes an example of routing based on the _existence_ of a query parameter, an example of routing based on the _value_ of a given query parameter, and an example where the response is driven by the contents of a query parameter. To run the example server, run: ```bash nix-shell --run 'example QueryParameters' ``` Or, without nix: ```bash spago -x test.dhall run --main Examples.QueryParameters.Main ```