diff --git a/package.json b/package.json
index 62ce775..f8d3e19 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
     "tailwindcss": "^3.3.5",
     "webextension-polyfill": "0.10.0",
     "zod": "^3.22.4",
+    "zod-validation-error": "^3.3.0",
     "zustand": "^4.5.2"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8eeb529..5a09ef0 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -65,6 +65,9 @@ dependencies:
   zod:
     specifier: ^3.22.4
     version: 3.22.4
+  zod-validation-error:
+    specifier: ^3.3.0
+    version: 3.3.0(zod@3.22.4)
   zustand:
     specifier: ^4.5.2
     version: 4.5.2(@types/react@18.2.37)(immer@10.0.3)(react@18.2.0)
@@ -9021,6 +9024,15 @@ packages:
     engines: {node: '>=12.20'}
     dev: true
 
+  /zod-validation-error@3.3.0(zod@3.22.4):
+    resolution: {integrity: sha512-Syib9oumw1NTqEv4LT0e6U83Td9aVRk9iTXPUQr1otyV1PuXQKOvOwhMNqZIq5hluzHP2pMgnOmHEo7kPdI2mw==}
+    engines: {node: '>=18.0.0'}
+    peerDependencies:
+      zod: ^3.18.0
+    dependencies:
+      zod: 3.22.4
+    dev: false
+
   /zod@3.22.4:
     resolution: {integrity: sha512-iC+8Io04lddc+mVqQ9AZ7OQ2MrUKGN+oIQyq1vemgt46jwCwLfhq7/pwnBnNXXXZb8VTVLKwp9EDkx+ryxIWmg==}
     dev: false
diff --git a/src/helpers/vision-agent/determineNextAction.ts b/src/helpers/vision-agent/determineNextAction.ts
index 3d16a37..cbdf547 100644
--- a/src/helpers/vision-agent/determineNextAction.ts
+++ b/src/helpers/vision-agent/determineNextAction.ts
@@ -111,7 +111,7 @@ export async function determineNextActionWithVision(
       } catch (e) {
         console.error(e);
         // TODO: try use LLM to fix format when response is not valid
-        throw new Error(`Incorrectly formatted response: ${e}`);
+        throw new Error(`Incorrect response format: ${e}`);
       }
 
       return {
diff --git a/src/helpers/vision-agent/parseResponse.ts b/src/helpers/vision-agent/parseResponse.ts
index 1c44e01..bf5fc8d 100644
--- a/src/helpers/vision-agent/parseResponse.ts
+++ b/src/helpers/vision-agent/parseResponse.ts
@@ -1,4 +1,5 @@
 import { toolSchemaUnion, type ToolOperation } from "./tools";
+import { fromError } from "zod-validation-error";
 
 export type Action = {
   thought: string;
@@ -38,7 +39,14 @@ export function parseResponse(rawResponse: string): Action {
   if (response.thought == null || response.action == null) {
     throw new Error("Invalid response: Thought and Action are required");
   }
-  const operation = toolSchemaUnion.parse(response.action);
+  let operation;
+  try {
+    operation = toolSchemaUnion.parse(response.action);
+  } catch (err) {
+    const validationError = fromError(err);
+    // user friendly error message
+    throw new Error(validationError.toString());
+  }
   if ("speak" in response) {
     return {
       thought: response.thought,