update docs

(cherry picked from commit cab3af6)

Author: ndthanhdev

README.md

@@ -17,14 +17,26 @@ An MCP Server for interacting with manifest v2 compatible browsers.
 }
 ```
 
-2. Download and load [MCP Browser Kit Extension](https://github.com/ndthanhdev/mcp-browser-kit/releases/download/v1.0.0/extension.zip) into a manifest v2 compatible browser:
+1. Download and extract [MCP Browser Kit Extension](https://github.com/ndthanhdev/mcp-browser-kit/releases/download/v1.0.0/extension.zip)
+1. [Load extension](#load-extension) into a manifest v2 compatible browser:
+    - Chrome ❌
+    - Brave ✅
+    - Firefox ✅
 
-- Chrome ❌
-- Brave ✅
-- Firefox ✅
-
-3. Enable extension and start messaging on your MCP Client:
+1. Enable extension and start messaging on your MCP Client:
 
    ```
    use mcp-browser-kit, Star the last opening github repo on my browser
-   ```
+   ```Load
+
+## Load Extension
+
+- Brave
+	1. Open `brave://extensions/`
+	2. Enable `Developer mode`
+	3. Click `Load unpacked`
+	4. Select the `extension` folder
+- Firefox
+	1. Open `about:debugging#/runtime/this-firefox`
+	2. Click `Load Temporary Add-on`
+	3. Select the `manifest.json` file in the `extension` folder

apps/server/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@mcp-browser-kit/server",
-	"version": "1.0.6",
+	"version": "1.0.7",
 	"packageManager": "yarn@4.8.0",
 	"homepage": "https://github.com/ndthanhdev/mcp-browser-kit",
 	"bin": {

apps/server/src/helpers/mcp-server.ts

@@ -124,18 +124,13 @@ server.tool(
 		tabId: z.string().describe("Tab ID to evaluate the code in"),
 		fnBodyCode: z.string().describe("A JavaScript function body to evaluate"),
 	},
-	async ({ tabId, index, fnBodyCode }) => {
-		const result = await rpcClient.defer(
-			"invokeJsFn",
-			tabId,
-			index,
-			fnBodyCode
-		);
+	async ({ tabId, fnBodyCode }) => {
+		const result = await rpcClient.defer("invokeJsFn", tabId, fnBodyCode);
 		return {
 			content: [
 				{
 					type: "text",
-					text: JSON.stringify(result),
+					text: JSON.stringify(result) ?? "undefined",
 				},
 			],
 		};