Based on http://chimera.labs.oreilly.com/books/1234000001808/ch07.html#settinguproutes_with_express + comments for https://github.com/braindamageinc/SublimeHttpRequester

node-express-routesample.js

var express = require("express");
var app = express();

// http://localhost:9001/users/1
app.get('/users/:id', function(req, res, next){
  var id = req.params.id;

  if (checkPermission(id)) {
    res.send("private");
  } else {
    next();
  }
});

// http://localhost:9001/users/2
app.get('/users/:id', function(req, res){
  res.send("public");
});

app.listen(9001);

function checkPermission(id){
	if(id == 1){
		return true;
	}else{
		return false;
	}
};