curl -v -X POST
https://app.dominodatalab.com/MYURL
-H 'Content-Type: application/json'
-H 'X-Domino-Api-Key: YOUR_API_KEY'
-d '{"parameters": [ "FOO", "BAR", "ETC"]}'

import requests

response =
requests.post("https://app.dominodatalab.com/MYURL",
headers = {
    "X-Domino-Api-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
},
json = {
    "parameters": ["FOO", "BAR", "ETC"]
}
)
print(response.status_code)
print(response.headers)
print(response.json())

Meteor.methods({
    score_app:  function(){
        var test = HTTP.call("POST", "https://app.dominodatalab.com/MYURL",
            {   headers:  {
                        "Content-Type": "application/json",
                        "X-Domino-Api-Key": "YOUR_API_KEY"
        },
        data: {'params': [143]
        }
        },
    function (error, result) {
    if (!error) {
      console.log("http post error")
    } else{
        console.log(result);
    };
    });
    }
});

result: 'You must provide a JSON object in your request body
with a parameters key containing an array of parameters.' } }