diff --git a/packages/tools/emoji-magic/package.json b/packages/tools/emoji-magic/package.json
index 126eab3..73cdec7 100644
--- a/packages/tools/emoji-magic/package.json
+++ b/packages/tools/emoji-magic/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tpmjs/emoji-magic",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "AI SDK tools for emoji-magic - convert text to emojis and back!",
   "type": "module",
   "main": "dist/index.js",
diff --git a/packages/tools/emoji-magic/src/tools/emojiMood.ts b/packages/tools/emoji-magic/src/tools/emojiMood.ts
index acec19c..f42d276 100644
--- a/packages/tools/emoji-magic/src/tools/emojiMood.ts
+++ b/packages/tools/emoji-magic/src/tools/emojiMood.ts
@@ -15,6 +15,18 @@ export const emojiMood = tool({
   async execute(input: z.infer<typeof EmojiMoodSchema>) {
     const { text, count } = input;
 
+    // Validate required parameters (defensive check)
+    if (!text) {
+      return {
+        success: false,
+        error: 'Missing required parameter: text',
+        mood: 'unknown',
+        suggestions: [],
+        text_length: 0,
+        analysis: 'Cannot analyze mood without text input',
+      };
+    }
+
     // Simple sentiment analysis based on keywords
     const positiveWords = [
       'happy',
diff --git a/packages/tools/emoji-magic/src/tools/textToEmoji.ts b/packages/tools/emoji-magic/src/tools/textToEmoji.ts
index 3cd5c66..285a57f 100644
--- a/packages/tools/emoji-magic/src/tools/textToEmoji.ts
+++ b/packages/tools/emoji-magic/src/tools/textToEmoji.ts
@@ -18,6 +18,18 @@ export const textToEmoji = tool({
   async execute(input: z.infer<typeof TextToEmojiSchema>) {
     const { text, style } = input;
 
+    // Validate required parameters (defensive check)
+    if (!text) {
+      return {
+        success: false,
+        error: 'Missing required parameter: text',
+        original: '',
+        converted: '',
+        style,
+        emoji_count: 0,
+      };
+    }
+
     // Simple word-to-emoji mappings
     const emojiMap: Record<string, string> = {
       // Emotions