Is it possible to use webhooks to trigger scripts?

Thanks for the quick repy,
Let me try to explain with a little more details. The app is to track people skills, so we know who needs training on what. So, the tables are:

Table 1: People

• ID,User (unique),Role
• 1,Joe,Role1
• 2,Janet,Role2
• 3,Carl,Role1
• 4,Mary,Role3
• 5,Carol,Role2
• 6,Thomas,Role1

Table 2: Skills

• ID,Description,Role
• 1,Knows A,Role1
• 2,Knows B,Role1
• 3,Knows C,Role2
• 4,Knows D,Role1
• 5,Knows E,Role3
• 6,Knows F,Role1
• 7,Knows G,Role2

Table 3: Skills matrix (it's basically a product of tables 1 and 2)

• ID,Person ID,Person name,Role from Person,Skill ID,Skill Description,Role from skill,Assigned,Status
• 1,1,Joe,Role1,1,Knows A,Role1,1,0
• 2,1,Joe,Role1,2,Knows B,Role1,1,1
• 3,1,Joe,Role1,3,Knows C,Role2,0,0
• 4,1,Joe,Role1,4,Knows D,Role1,1,0
• 5,1,Joe,Role1,5,Knows E,Role3,0,0
• 6,1,Joe,Role1,6,Knows F,Role1,1,0
• 7,1,Joe,Role1,7,Knows G,Role2,0,0
• 8,2,Janet,Role2,1,Knows A,Role1,0,1
• 9,2,Janet,Role2,2,Knows B,Role1,0,0
• 10,2,Janet,Role2,3,Knows C,Role2,1,0
• 11,2,Janet,Role2,4,Knows D,Role1,0,0
  
• 12,2,Janet,Role2,5,Knows E,Role3,0,0
• 13,2,Janet,Role2,6,Knows F,Role1,0,0
• 13,2,Janet,Role2,7,Knows G,Role2,1,1
• ...

So, each time a new person is added, a list of all Skills from the Skills table is created for that person on the Matrix. Each person has a role, and each skill is related to a role. On the matrix, when the role from a given person and the role from a given skill match, it means that that skill is assigned to that person. This is done by the 'Assigned' field, which is a calculated field. This way, if a person moves to a different role, he or she gets a new list of required skills. Also, when a role is assigned to a different person, that person will have a new list of required skills. The status field is used to track if a given person is qualified on a given skill. It can be 1 even if that skill is not currently assigned, because that person was qualified previously on a different role. So, if he/she goes back to that role, the status is still there.

This is the script. It's a simplified version, without error handling. All I need is to execute it each time a new person is added. Actually, I'll need a similar script for new skills, but the idea is the same:

$(document).ready(function(){   //get person id from querystring
 var person = getQueryVariable('rid');
 //clean up matrix items without related skills
 var url = 'bmzta34wf?a=API_PurgeRecords&query={6.EX.}&apptoken=bh89wwc8sxc9ac2g83fme83nsi';
 var promise= $.get(url);
 //clean up matrix items without related people
 url = 'bmzta34wf?a=API_PurgeRecords&query={31.EX.}&apptoken=bh89wwc8sxc9ac2g83fme83nsi';
 promise= $.get(url);

 //get all skills from Skills table
 url = 'bmzizdnpr?a=API_DoQuery&clist=a&apptoken=bh89wwc8sxc9ac2g83fme83nsi';
 promise= $.get(url);
 $.when(promise).then(function(xml){
  //loop through skills
  $(xml).find('record').each(function(){
   //get skill id
   var skill = $(this).find("record_id_").text();
   //check for existing combination of skill and person on 'SKills List' table
   var url = 'bmzta34wf?act=API_DoQueryCount&clist=a&query={6.EX.' + skill + '}AND{31.EX.' + person + '}&apptoken=bh89wwc8sxc9ac2g83fme83nsi';
   var promise= $.get(url);
   $.when(promise).then(function(xml){
    $(xml).find('qdbapi').each(function(){
     //check if an item with the skill x person combination already exists
     var matches = $(this).find('numMatches').text();
     //if it does not exist, create it
     if(matches == 0) {
      var url = 'bmzta34wf?act=API_AddRecord&clist=a&_fid_6=' + skill + '&_fid_31=' + person + '&apptoken=bh89wwc8sxc9ac2g83fme83nsi';
      var promise= $.get(url);
     }
    });
   });
  });
 })
})
//function to get querystring values from variables
function getQueryVariable(variable) {
   var query = window.location.search.substring(1);
   var vars = query.split('&');
   for (var i=0;i<vars.length;i++) {
     var pair = vars.split('=');
     if(pair[0] == variable){return pair[1];}
   }
 return(false);
}

Thanks!