diff --git a/apps/moonlight/moonlight-android.json b/apps/moonlight/moonlight-android.json
index ef0ad81..2d3acad 100644
--- a/apps/moonlight/moonlight-android.json
+++ b/apps/moonlight/moonlight-android.json
@@ -26,8 +26,5 @@
   "featured": true,
   "compatibility": {
     "sunshine": ">=0.1.0"
-  },
-  "metadata": {
-    "license": "GPL-3.0"
   }
 }
diff --git a/apps/moonlight/moonlight-qt.json b/apps/moonlight/moonlight-qt.json
index 7728f51..b47aa9c 100644
--- a/apps/moonlight/moonlight-qt.json
+++ b/apps/moonlight/moonlight-qt.json
@@ -16,8 +16,5 @@
   "featured": true,
   "compatibility": {
     "sunshine": ">=0.1.0"
-  },
-  "metadata": {
-    "license": "GPL-3.0"
   }
 }
diff --git a/schemas/app.schema.json b/schemas/app.schema.json
index 4faf75b..09c3f1d 100644
--- a/schemas/app.schema.json
+++ b/schemas/app.schema.json
@@ -4,6 +4,7 @@
   "description": "Schema for featured applications in the LizardByte app directory",
   "type": "object",
   "required": ["id", "name", "category", "description", "platforms"],
+  "additionalProperties": false,
   "properties": {
     "id": {
       "type": "string",
@@ -81,6 +82,7 @@
     },
     "compatibility": {
       "type": "object",
+      "additionalProperties": false,
       "properties": {
         "sunshine": {
           "type": "string",
diff --git a/schemas/categories.schema.json b/schemas/categories.schema.json
index 93e04bf..fcb0ce8 100644
--- a/schemas/categories.schema.json
+++ b/schemas/categories.schema.json
@@ -4,12 +4,14 @@
   "description": "Schema for project-specific category definitions",
   "type": "object",
   "required": ["categories"],
+  "additionalProperties": false,
   "properties": {
     "categories": {
       "type": "array",
       "items": {
         "type": "object",
         "required": ["id", "name", "description"],
+        "additionalProperties": false,
         "properties": {
           "id": {
             "type": "string",
diff --git a/schemas/project.schema.json b/schemas/project.schema.json
index e88e7d5..c865376 100644
--- a/schemas/project.schema.json
+++ b/schemas/project.schema.json
@@ -4,6 +4,7 @@
   "description": "Schema for project-specific configuration",
   "type": "object",
   "required": ["id", "name"],
+  "additionalProperties": false,
   "properties": {
     "id": {
       "type": "string",