diff --git a/DOCS.md b/DOCS.md
index 09ed6ae..5d5fe28 100644
--- a/DOCS.md
+++ b/DOCS.md
@@ -16,9 +16,19 @@ Because it's always good to understand the API without surfing the code, init? :
 * `parties.get_party_leader(p_name)`: (string) returns the party leader of the party where `p_name` is in
 * `parties.get_party_members(party_leader)`: (table) returns a list of every player inside the party where `party_leader` is in
 
+
 ## 2 Customisation
 
-### 2.1 Chat
+### 2.1 Callbacks
+
+* `parties.register_on_pre_party_invite(sender, p_name)`: use it to run additional checks. Returning true keeps executing the invite, returning false/nil cancels it
+* `parties.register_on_party_invite(sender, p_name)`: called when an invite has been succesfully sent
+* `parties.register_on_pre_party_join(party_leader, p_name)`: use it to run additional checks.Returning true keeps executing the join function, returning false/nil cancels it
+* `parties.register_on_party_join(party_leader, p_name)`: called when a player succesfully joined a party
+* `parties.register_on_party_leave(party_leader, p_name)`: called when a player leaves a party
+* `parties.register_on_party_disband(p_name)`: called when a party gets disbanded (by `p_name`, who is the party leader)
+
+### 2.2 Chat
 
 Chat is light blue by default and it adds the `[Party] ` prefix at the beginning of every message. It then follows the format of the chat set by the owner. By default is:  
 `[Party] <playername> message`
diff --git a/api.lua b/api.lua
index f243643..a710c15 100644
--- a/api.lua
+++ b/api.lua
@@ -9,6 +9,8 @@ local players_invited = {}                  -- KEY p_name; VALUE: inviter
 
 
 
+
+
 function parties.invite(sender, p_name)
 
   -- se si è in un gruppo ma non si è il capo gruppo
@@ -36,12 +38,22 @@ function parties.invite(sender, p_name)
     minetest.chat_send_player(sender, minetest.colorize("#e6482e", S("[!] This player is already in a party!")))
     return end
 
+  -- se non può essere invitato (callback)
+  for _, callback in ipairs(parties.registered_on_pre_party_invite) do
+    if not callback(sender, p_name) then return end
+  end
+
   -- TODO: riproduzione suono invito
 
   minetest.chat_send_player(sender, format_party_message(S("Invite to @1 successfully sent", p_name)))
   minetest.chat_send_player(p_name, format_party_message(S("@1 has invitied you in a party, would you like to join? (/party join)", sender)))
   players_invited[p_name] = sender
 
+  -- eventuali callback
+  for _, callback in ipairs(parties.registered_on_party_invite) do
+    callback(sender, p_name)
+  end
+
   -- se non ha accettato dopo 15 secondi, annullo l'invito
   minetest.after(15, function()
     if minetest.get_player_by_name(sender) and minetest.get_player_by_name(p_name) and players_invited[p_name] and players_invited[p_name] == sender then
@@ -62,6 +74,11 @@ function parties.join(p_name)
 
   local party_leader = players_invited[p_name]
 
+  -- se non può accettare (callback)
+  for _, callback in ipairs(parties.registered_on_pre_party_join) do
+    if not callback(party_leader, p_name) then return end
+  end
+
   if players_in_parties[party_leader] == nil then
     current_parties[party_leader] = {party_leader}
     players_in_parties[party_leader] = party_leader
@@ -75,6 +92,11 @@ function parties.join(p_name)
   table.insert(current_parties[party_leader], p_name)
   minetest.chat_send_player(p_name, format_party_message(S("You've joined @1's party", party_leader)))
 
+  -- eventuali callback
+  for _, callback in ipairs(parties.registered_on_party_join) do
+    callback(party_leader, p_name)
+  end
+
 end
 
 
@@ -99,6 +121,11 @@ function parties.leave(p_name)
   players_in_parties[p_name] = nil
   minetest.chat_send_player(p_name, format_party_message(S("You've left the party")), true)
 
+  -- eventuali callback
+  for _, callback in ipairs(parties.registered_on_party_leave) do
+    callback(party_leader, p_name)
+  end
+
   -- se ad abbandonare è stato il capo gruppo, lo cambio
   if p_name == party_leader then
 
@@ -138,6 +165,11 @@ function parties.disband(p_name)
 
   parties.chat_send_party(p_name, S("The party has been disbanded"), true)
 
+  -- eventuali callback
+  for _, callback in ipairs(parties.registered_on_party_disband) do
+    callback(p_name)
+  end
+
   for _, pl_name in pairs(current_parties[p_name]) do
     players_in_parties[pl_name] = nil
   end
diff --git a/callbacks.lua b/callbacks.lua
new file mode 100644
index 0000000..93eb7b7
--- /dev/null
+++ b/callbacks.lua
@@ -0,0 +1,15 @@
+-- I had no idea how to do it, so, uhm... this is how Minetest handles callbacks
+local function make_registration()
+  local t = {}
+  local registerfunc = function(func)
+    t[#t+1] = func
+  end
+  return t, registerfunc
+end
+
+parties.registered_on_pre_party_invite, parties.register_on_pre_party_invite = make_registration()
+parties.registered_on_party_invite, parties.register_on_party_invite = make_registration()
+parties.registered_on_pre_party_join, parties.register_on_pre_party_join = make_registration()
+parties.registered_on_party_join, parties.register_on_party_join = make_registration()
+parties.registered_on_party_leave, parties.register_on_party_leave = make_registration()
+parties.registered_on_party_disband, parties.register_on_party_disband = make_registration()
diff --git a/init.lua b/init.lua
index 31cffac..5266d26 100644
--- a/init.lua
+++ b/init.lua
@@ -1,4 +1,5 @@
 dofile(minetest.get_modpath("parties") .. "/api.lua")
+dofile(minetest.get_modpath("parties") .. "/callbacks.lua")
 dofile(minetest.get_modpath("parties") .. "/chatcmdbuilder.lua")
 dofile(minetest.get_modpath("parties") .. "/commands.lua")
 dofile(minetest.get_modpath("parties") .. "/player_manager.lua")