diff --git a/__tests__/token.test.ts b/__tests__/token.test.ts
index 19a4007..1223138 100644
--- a/__tests__/token.test.ts
+++ b/__tests__/token.test.ts
@@ -681,7 +681,7 @@ describe("Token standard functionalities", () => {
     const res = await handle(
       generateOracleResponse({ BTC: 85325.425 }, oracleRes)
     );
-    
+
     expect(res.Messages).toEqual(
       expect.arrayContaining([
         expect.objectContaining({
diff --git a/src/borrow/borrow.lua b/src/borrow/borrow.lua
index b3be414..91b9fae 100644
--- a/src/borrow/borrow.lua
+++ b/src/borrow/borrow.lua
@@ -94,8 +94,7 @@ function mod.borrow(msg, _, oracle)
     " " ..
     CollateralTicker
   )
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
       ["total-borrows"] = precision.formatInternalAsNative(TotalBorrows, "roundup"),
diff --git a/src/borrow/interest.lua b/src/borrow/interest.lua
index f5a2521..aabf075 100644
--- a/src/borrow/interest.lua
+++ b/src/borrow/interest.lua
@@ -170,8 +170,7 @@ function mod.accrueInterest(msg)
   ReservesRemainder = tostring(remainder)
 
   -- patch the updated globals
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       ["total-borrows"] = precision.formatInternalAsNative(TotalBorrows, "roundup"),
       ["total-reserves"] = precision.formatInternalAsNative(Reserves, "roundup"),
@@ -212,8 +211,7 @@ function mod.accrueInterestForUser(address)
   InterestIndices[address] = tostring(interestIndex)
 
   -- patch updated global values
-  ao.send({
-    device = "patch@1.0",
+  patch({
     loans = { [address] = Loans[address] },
     ["interest-indices"] = { [address] = InterestIndices[address] },
     -- !!do not update positions to avoid an infinite recursive loop!!
diff --git a/src/borrow/repay.lua b/src/borrow/repay.lua
index f367754..1ad402e 100644
--- a/src/borrow/repay.lua
+++ b/src/borrow/repay.lua
@@ -159,8 +159,7 @@ function repay.repayToPool(target, quantity)
   TotalBorrows = tostring(bint(TotalBorrows) - precision.toInternalPrecision(actualRepaidQty))
 
   -- patch the updated globals
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
       ["total-borrows"] = precision.formatInternalAsNative(TotalBorrows, "roundup"),
diff --git a/src/controller/config.lua b/src/controller/config.lua
index 1903fb0..59ca5f7 100644
--- a/src/controller/config.lua
+++ b/src/controller/config.lua
@@ -111,8 +111,7 @@ function mod.update(msg)
   if newAOToken then AOToken = newAOToken end
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     environment = {
       ["risk-parameters"] = {
         ["collateral-factor"] = CollateralFactor,
@@ -173,8 +172,7 @@ function mod.toggleInteractions(msg)
   -- patch
   local enabledInteractions, disabledInteractions = patching.utils.interactionsState()
 
-  ao.send({
-    device = "patch@1.0",
+  patch({
     environment = {
       limits = {
         ["enabled-interactions"] = enabledInteractions,
diff --git a/src/controller/cooldown.lua b/src/controller/cooldown.lua
index dd80ba6..36b62b2 100644
--- a/src/controller/cooldown.lua
+++ b/src/controller/cooldown.lua
@@ -49,8 +49,7 @@ function mod.gate(msg)
   Cooldowns[sender] = msg["Block-Height"] + CooldownPeriod
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     cooldowns = { [sender] = Cooldowns[sender] }
   })
 end
diff --git a/src/controller/friend.lua b/src/controller/friend.lua
index 4e751ca..2b89728 100644
--- a/src/controller/friend.lua
+++ b/src/controller/friend.lua
@@ -1,4 +1,5 @@
 local assertions = require ".utils.assertions"
+local patching = require ".token.patching"
 local utils = require ".utils.utils"
 local json = require "json"
 
@@ -52,8 +53,7 @@ function friend.add(msg)
   })
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     environment = { friends = Friends }
   })
 
@@ -89,8 +89,7 @@ function friend.remove(msg)
   assert(#removed > 0, "Friend " .. target .. " not yet added")
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     environment = { friends = Friends }
   })
 
diff --git a/src/controller/reserves.lua b/src/controller/reserves.lua
index 664f96c..0670b80 100644
--- a/src/controller/reserves.lua
+++ b/src/controller/reserves.lua
@@ -1,5 +1,6 @@
 local assertions = require ".utils.assertions"
 local precision = require ".utils.precision"
+local patching = require ".token.patching"
 local bint = require ".utils.bint"(1024)
 
 local mod = {}
@@ -66,8 +67,7 @@ function mod.deploy(msg)
   Cash = tostring(bint(Cash) + quantity)
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
       ["total-reserves"] = precision.formatInternalAsNative(Reserves, "roundup")
diff --git a/src/liquidations/liquidate.lua b/src/liquidations/liquidate.lua
index 11434fb..3ca9c3f 100644
--- a/src/liquidations/liquidate.lua
+++ b/src/liquidations/liquidate.lua
@@ -243,8 +243,7 @@ function mod.liquidatePosition(msg)
   })
 
   -- patch
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["token-info"] = { supply = TotalSupply },
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
diff --git a/src/process.lua b/src/process.lua
index 8fb09b8..ea2e548 100644
--- a/src/process.lua
+++ b/src/process.lua
@@ -7,6 +7,9 @@ require(".utils.assignment").init(ao)
 local process = { _version = "0.0.1" }
 
 local coroutine = require "coroutine"
+local utils = require ".utils.utils"
+
+patch = function (data) utils.patch_table(PatchData or {}, data) end
 
 local friend = require ".controller.friend"
 local config = require ".controller.config"
@@ -34,7 +37,6 @@ local rate = require ".supply.rate"
 local redeem = require ".supply.redeem"
 local delegation = require ".supply.delegation"
 
-local utils = require ".utils.utils"
 local precision = require ".utils.precision"
 
 HandlersAdded = HandlersAdded or false
@@ -380,8 +382,6 @@ function process.handle(msg, env)
   if not status then
     -- call default error handler
     Handlers.defaultErrorHandler(msg, env, result)
-
-    return ao.result()
   end
 
   return ao.result()
diff --git a/src/supply/mint.lua b/src/supply/mint.lua
index 2483343..f6abe8e 100644
--- a/src/supply/mint.lua
+++ b/src/supply/mint.lua
@@ -61,8 +61,7 @@ function mint.handler(msg)
 
   -- patch
   patching.patchOrder(msg.Tags["Pushed-For"] or msg.Id, true)
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
       ["total-borrows"] = precision.formatInternalAsNative(TotalBorrows, "roundup"),
diff --git a/src/supply/redeem.lua b/src/supply/redeem.lua
index 47da439..66ad35a 100644
--- a/src/supply/redeem.lua
+++ b/src/supply/redeem.lua
@@ -99,8 +99,7 @@ function mod.redeem(msg, _, oracle)
     Recipient = sender
   })
   patching.patchOrder(msg.Id, true)
-  ao.send({
-    device = "patch@1.0",
+  patch({
     ["pool-state"] = {
       cash = precision.formatInternalAsNative(Cash, "rounddown"),
       ["total-borrows"] = precision.formatInternalAsNative(TotalBorrows, "roundup"),
diff --git a/src/token/patching.lua b/src/token/patching.lua
index 146b9b0..522fedb 100644
--- a/src/token/patching.lua
+++ b/src/token/patching.lua
@@ -10,6 +10,9 @@ local mod = {
 
 ---@type HandlerFunction
 function mod.setup()
+  PatchingSetUp = PatchingSetUp or false
+  if PatchingSetUp then return end
+
   -- enabled and disabled interactions
   local enabledInteractions, disabledInteractions = mod.utils.interactionsState()
 
@@ -87,6 +90,8 @@ function mod.setup()
     ["interest-indices"] = interestIndices,
     orders = { device = "trie@1.0" }
   })
+
+  PatchingSetUp = true
 end
 
 -- Patch the result of a borrow/mint/redeem/repay
@@ -94,8 +99,7 @@ end
 ---@param success boolean The result of the order
 ---@param message string? Optional result message
 function mod.patchOrder(id, success, message)
-  ao.send({
-    device = "patch@1.0",
+  patch({
     orders = {
       [id] = {
         success = success,
diff --git a/src/token/transfer.lua b/src/token/transfer.lua
index 9d882ac..adecb33 100644
--- a/src/token/transfer.lua
+++ b/src/token/transfer.lua
@@ -63,8 +63,7 @@ local function transfer(msg, _, oracle)
   Balances[sender] = tostring(walletBalance - quantity)
 
   -- patch transfer
-  ao.send({
-    device = "patch@1.0",
+  patch({
     balances = {
       [sender] = Balances[sender],
       [target] = Balances[target]
diff --git a/src/utils/handlers.lua b/src/utils/handlers.lua
index d75c73a..7978f47 100644
--- a/src/utils/handlers.lua
+++ b/src/utils/handlers.lua
@@ -468,6 +468,9 @@ function handlers.evaluate(msg, env)
   assert(type(msg) == 'table', 'msg is not valid')
   assert(type(env) == 'table', 'env is not valid')
 
+  -- reset current patch
+  PatchData = {}
+
   for _, o in ipairs(handlers.list) do
     if o.name ~= "_default" and not o.inactive then
       local match = utils.matchesSpec(msg, o.pattern)
@@ -556,7 +559,7 @@ function handlers.evaluate(msg, env)
         end
       end
       if match < 0 then
-        return handled
+        break
       end
     end
   end
@@ -569,6 +572,13 @@ function handlers.evaluate(msg, env)
     handlers.remove(name)
   end
 
+  -- send summarized patch
+  if next(PatchData) ~= nil then
+    PatchData.device = "patch@1.0"
+    ao.send(PatchData)
+    PatchData = {}
+  end
+
   -- make sure the request was handled
   assert(
     handled or msg.Id == ao.id or string.match(msg.Action or "", "Error$"),
diff --git a/src/utils/utils.lua b/src/utils/utils.lua
index 6db032f..4c7fa7c 100644
--- a/src/utils/utils.lua
+++ b/src/utils/utils.lua
@@ -402,4 +402,17 @@ function utils.udiv_roundup(x, y)
   )
 end
 
+-- Patches a table with another table, without deleting any keys (recursively merges nested tables)
+---@param target table The table to be patched (modified in-place)
+---@param patch table The table providing new or updated values
+function utils.patch_table(target, patch)
+  for k, v in pairs(patch) do
+    if type(v) == "table" and type(target[k]) == "table" then
+      utils.patch_table(target[k], v)
+    else
+      target[k] = v
+    end
+  end
+end
+
 return utils