diff --git a/res/scripts/post_content.lua b/res/scripts/post_content.lua
index 1b69f42f..b512882d 100644
--- a/res/scripts/post_content.lua
+++ b/res/scripts/post_content.lua
@@ -14,28 +14,20 @@ for name, _ in pairs(user_props) do
 end
 
 -- remove undefined properties and build tags set
-local function process_properties(properties)
-    for id, props in pairs(properties) do
-        local tags_set = nil
-        for propname, value in pairs(props) do
-            if propname == "tags" then
-                if #value > 0 then
-                    tags_set = tags_set or {}
-                end
-                for _, tag in ipairs(value) do
-                    tags_set[tag] = true
-                end
-            end
+local function process_properties(lib)
+    for id, props in pairs(lib.properties) do
+        for propname, _ in pairs(props) do
             if not table.has(names, propname) then
                 props[propname] = nil
             end
         end
-        props.tags_set = tags_set
+
+        props.tags_set = lib.__get_tags(id)
     end
 end
 
-process_properties(block.properties)
-process_properties(item.properties)
+process_properties(block)
+process_properties(item)
 
 local function make_read_only(t)
     setmetatable(t, {
@@ -68,7 +60,11 @@ local function cache_names(library)
     end
 
     function library.has_tag(id, tag)
-        local tags_set = library.properties[id].tags_set
+        if id == nil then
+            error("id is nil")
+        end
+        local props = library.properties[id]
+        local tags_set = props.tags_set
         if tags_set then
             return tags_set[tag]
         else
diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index 1527d98b..ea29e27c 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -413,6 +413,25 @@ void ContentLoader::load() {
     if (io::exists(contentFile)) {
         loadContent(io::read_json(contentFile));
     }
+
+    // Load attached tags
+    io::path tagsFile = folder / "tags.toml";
+    if (io::exists(tagsFile)) {
+        auto tagsMap = io::read_object(tagsFile);
+        for (const auto& [key, list] : tagsMap.asObject()) {
+            for (const auto& id : list) {
+                const auto& stringId = id.asString();
+                if (auto block = builder.blocks.get(stringId)) {
+                    block->tags.push_back(key);
+                    if (auto item = builder.items.get(stringId + BLOCK_ITEM_SUFFIX)) {
+                        item->tags.push_back(key);
+                    }
+                } else if (auto item = builder.items.get(stringId)) {
+                    item->tags.push_back(key);
+                }
+            }
+        }
+    }
 }
 
 template <class T>
diff --git a/src/logic/scripting/lua/libs/libblock.cpp b/src/logic/scripting/lua/libs/libblock.cpp
index 29f7747c..e72bf96f 100644
--- a/src/logic/scripting/lua/libs/libblock.cpp
+++ b/src/logic/scripting/lua/libs/libblock.cpp
@@ -20,21 +20,21 @@
 
 using namespace scripting;
 
-static inline const Block* require_block(lua::State* L) {
+static inline const Block* get_block_def(lua::State* L) {
     auto indices = content->getIndices();
     auto id = lua::tointeger(L, 1);
     return indices->blocks.get(id);
 }
 
 static inline int l_get_def(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushstring(L, def->name);
     }
     return 0;
 }
 
 static int l_material(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushstring(L, def->material);
     }
     return 0;
@@ -59,14 +59,14 @@ static int l_index(lua::State* L) {
 }
 
 static int l_is_extended(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushboolean(L, def->rt.extended);
     }
     return 0;
 }
 
 static int l_get_size(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushivec_stack(L, glm::ivec3(def->size));
     }
     return 0;
@@ -343,14 +343,14 @@ static int l_is_replaceable_at(lua::State* L) {
 }
 
 static int l_caption(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushstring(L, def->caption);
     }
     return 0;
 }
 
 static int l_get_textures(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         lua::createtable(L, 6, 0);
         for (size_t i = 0; i < 6; i++) {
             lua::pushstring(L, def->defaults.textureFaces[i]); // TODO: variant argument
@@ -363,7 +363,7 @@ static int l_get_textures(lua::State* L) {
 
 
 static int l_model_name(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         // TODO: variant argument
         const auto& modelName = def->defaults.model.name;
         if (modelName.empty()) {
@@ -375,7 +375,7 @@ static int l_model_name(lua::State* L) {
 }
 
 static int l_get_model(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         // TODO: variant argument
         return lua::pushlstring(L, BlockModelTypeMeta.getName(def->defaults.model.type));
     }
@@ -383,7 +383,7 @@ static int l_get_model(lua::State* L) {
 }
 
 static int l_get_hitbox(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         size_t rotation = lua::tointeger(L, 2);
         if (def->rotatable) {
             rotation %= def->rotations.MAX_COUNT;
@@ -404,14 +404,14 @@ static int l_get_hitbox(lua::State* L) {
 }
 
 static int l_get_rotation_profile(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushstring(L, def->rotations.name);
     }
     return 0;
 }
 
 static int l_get_picking_item(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         return lua::pushinteger(L, def->rt.pickingItem);
     }
     return 0;
@@ -699,7 +699,7 @@ static int l_reload_script(lua::State* L) {
 }
 
 static int l_has_tag(lua::State* L) {
-    if (auto def = require_block(L)) {
+    if (auto def = get_block_def(L)) {
         auto tag = lua::require_string(L, 2);
         const auto& tags = def->rt.tags;
         return lua::pushboolean(L, tags.find(content->getTagIndex(tag)) != tags.end());
@@ -707,6 +707,21 @@ static int l_has_tag(lua::State* L) {
     return 0;
 }
 
+static int l_get_tags(lua::State* L) {
+    if (auto def = get_block_def(L)) {
+        if (def->tags.empty())  {
+            return 0;
+        }
+        lua::createtable(L, 0, def->tags.size());
+        for (const auto& tag : def->tags) {
+            lua::pushboolean(L, true);
+            lua::setfield(L, tag);
+        }
+        return 1;
+    }
+    return 0;
+}
+
 static int l_pull_register_events(lua::State* L) {
     auto events = blocks_agent::pull_register_events();
     if (events.empty())
@@ -766,6 +781,7 @@ const luaL_Reg blocklib[] = {
     {"set_field", lua::wrap<l_set_field>},
     {"reload_script", lua::wrap<l_reload_script>},
     {"has_tag", lua::wrap<l_has_tag>},
+    {"__get_tags", lua::wrap<l_get_tags>},
     {"__pull_register_events", lua::wrap<l_pull_register_events>},
     {NULL, NULL}
 };
diff --git a/src/logic/scripting/lua/libs/libitem.cpp b/src/logic/scripting/lua/libs/libitem.cpp
index b26e524c..79c03c2a 100644
--- a/src/logic/scripting/lua/libs/libitem.cpp
+++ b/src/logic/scripting/lua/libs/libitem.cpp
@@ -117,6 +117,21 @@ static int l_has_tag(lua::State* L) {
     return 0;
 }
 
+static int l_get_tags(lua::State* L) {
+    if (auto def = get_item_def(L,  1)) {
+        if (def->tags.empty())  {
+            return 0;
+        }
+        lua::createtable(L, 0, def->tags.size());
+        for (const auto& tag : def->tags) {
+            lua::pushboolean(L, true);
+            lua::setfield(L, tag);
+        }
+        return 1;
+    }
+    return 0;
+}
+
 const luaL_Reg itemlib[] = {
     {"index", lua::wrap<l_index>},
     {"name", lua::wrap<l_name>},
@@ -131,5 +146,6 @@ const luaL_Reg itemlib[] = {
     {"uses", lua::wrap<l_uses>},
     {"reload_script", lua::wrap<l_reload_script>},
     {"has_tag", lua::wrap<l_has_tag>},
+    {"__get_tags", lua::wrap<l_get_tags>},
     {NULL, NULL}
 };