diff --git a/config.lua b/config.lua
index 1409a86..90970ec 100644
--- a/config.lua
+++ b/config.lua
@@ -125,6 +125,12 @@
         -- NOTE: Chest dropping is NYI in plethora 1.19, so do not use unless
         -- the output chest can be accessed
     },
+    hooks = {
+        start = nil, -- function(version, config, products)
+        purchase = nil, -- function(product, amount, refundAmount, transaction, transactionCurrency)
+        failedPurchase = nil, -- function(transaction, transactionCurrency, product, errorMessage)
+        programError = nil -- function(err)
+    },
     exchange = {
         -- Not yet implemented
         enabled = true,
diff --git a/core/ConfigValidator.lua b/core/ConfigValidator.lua
index 3619b2c..f7915e4 100644
--- a/core/ConfigValidator.lua
+++ b/core/ConfigValidator.lua
@@ -108,6 +108,12 @@
         exchangeChest = "chest?",
         outputChest = "chest",
     },
+    hooks = {
+        start = "function?",
+        purchase = "function?",
+        failedPurchase = "function?",
+        programError = "function?",
+    },
     shopSync = {
         enabled = "boolean?",
         name = "string?",
@@ -163,6 +169,9 @@
         if entryType == "number" and type(value) ~= "number" then
             error("Config value " .. subpath .. " must be a number")
         end
+        if entryType == "function" and type(value) ~= "function" then
+            error("Config value " .. subpath .. " must be a function")
+        end
         if entryType == "color" then
             if type(value) ~= "number" then
                 error("Config value " .. subpath .. " must be a color")
diff --git a/core/ShopState.lua b/core/ShopState.lua
index 91b4dd3..2713df0 100644
--- a/core/ShopState.lua
+++ b/core/ShopState.lua
@@ -2,6 +2,7 @@
 local ScanInventory = require("core.inventory.ScanInventory")
 local Pricing = require("core.Pricing")
 local sound = require("util.sound")
+local eventHook = require("util.eventHook")
 
 local shopSyncFrequency = 30
 local shopSyncChannel = 9773
@@ -136,17 +137,32 @@
                     if state.config.settings.playSounds then
                         sound.playSound(state.speaker, state.config.sounds.purchase)
                     end
+                    if state.config.hooks and state.config.hooks.purchase then
+                        eventHook.execute(state.config.hooks.purchase, purchasedProduct, available, refundAmount, transaction, transactionCurrency)
+                    end
                 else
                     refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundOutOfStock)
+                    if state.config.hooks and state.config.hooks.failedPurchase then
+                        eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, purchasedProduct, state.config.lang.refundOutOfStock)
+                    end
                 end
             else
                 refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundOutOfStock)
+                if state.config.hooks and state.config.hooks.failedPurchase then
+                    eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, purchasedProduct, state.config.lang.refundOutOfStock)
+                end
             end
         else
             refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundAtLeastOne, true)
+            if state.config.hooks and state.config.hooks.failedPurchase then
+                eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, purchasedProduct, state.config.lang.refundAtLeastOne)
+            end
         end
     else
         refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundInvalidProduct, true)
+        if state.config.hooks and state.config.hooks.failedPurchase then
+            eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, nil, state.config.lang.refundInvalidProduct)
+        end
     end
 end
 
@@ -194,7 +210,7 @@
                     if sentName and transactionCurrency.name and transactionCurrency.name:find(".") then
                         sentName = sentName .. "." .. nameSuffix
                     end
-                    if transaction.from ~= transactionCurrency.host and (not transactionCurrency.name and not sentName) or (sentName and sentName:lower() == transactionCurrency.name:lower()) then
+                    if transaction.from ~= transactionCurrency.host and (not transactionCurrency.name and not sentName) or (transactionCurrency.name and sentName and sentName:lower() == transactionCurrency.name:lower()) then
                         local meta = parseMeta(transaction.metadata)
                         if transaction.to == transactionCurrency.host and not transactionCurrency.name and not sentMetaname then
                             sentMetaname = meta[1]
@@ -205,10 +221,16 @@
                                 -- Success :D
                             else
                                 refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundError, true)
+                                if state.config.hooks and state.config.hooks.failedPurchase then
+                                    eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, nil, state.config.lang.refundError)
+                                end
                                 error(err)
                             end
                         else
                             refund(transactionCurrency, transaction.from, meta, transaction.value, state.config.lang.refundNoProduct, true)
+                            if state.config.hooks and state.config.hooks.failedPurchase then
+                                eventHook.execute(state.config.hooks.failedPurchase, transaction, transactionCurrency, nil, state.config.lang.refundNoProduct)
+                            end
                         end
                     end
                 end
diff --git a/radon.lua b/radon.lua
index a686b6b..8e49bba 100644
--- a/radon.lua
+++ b/radon.lua
@@ -1,11 +1,12 @@
 local oldPullEvent = os.pullEvent
 os.pullEvent = os.pullEventRaw
 
-local version = "1.1.8"
+local version = "1.1.9"
 
 --- Imports
 local _ = require("util.score")
 local sound = require("util.sound")
+local eventHook = require("util.eventHook")
 
 local Display = require("modules.display")
 
@@ -636,6 +637,9 @@
 local success, err = pcall(function() ShopRunner.launchShop(shopState, function()
     -- Profiler:activate()
     print("Radon " .. version .. " has started")
+    if config.hooks and config.hooks.start then
+        eventHook.execute(config.hooks.start, version, config, products)
+    end
     while true do
         tree = Solyd.render(tree, Main {t = t, config = config, shopState = shopState})
 
@@ -688,6 +692,9 @@
 
 os.pullEvent = oldPullEvent
 if not success then
+    if config.hooks and config.hooks.programError then
+        eventHook.execute(config.hooks.programError, err)
+    end
     error(err)
 end
 print("Radon terminated, goodbye!")
diff --git a/util/eventHook.lua b/util/eventHook.lua
new file mode 100644
index 0000000..8734536
--- /dev/null
+++ b/util/eventHook.lua
@@ -0,0 +1,14 @@
+local function executeHook(func, ...)
+    local args = {...}
+    local ret = {pcall(func, unpack(args))}
+    if not ret[1] then
+        print("Error in hook: " .. ret[2])
+        return
+    end
+    table.remove(ret, 1)
+    return unpack(ret)
+end
+
+return {
+    execute = executeHook
+}
\ No newline at end of file