Update requirements

Author: beaufortfrancois

README.md

@@ -585,7 +585,7 @@ The Chrome DevTools MCP server supports the following configuration option:
   - **Type:** boolean
 
 - **`--experimentalWebmcp`/ `--experimental-webmcp`**
-  Set to true to enable debugging WebMCP tools.
+  Set to true to enable debugging WebMCP tools. Requires Chrome 149+ with the following flags: `--enable-features=WebMCPTesting,DevToolsWebMCPSupport`
   - **Type:** boolean
 
 - **`--chromeArg`/ `--chrome-arg`**

src/bin/chrome-devtools-mcp-cli-options.ts

@@ -187,7 +187,8 @@ export const cliOptions = {
   },
   experimentalWebmcp: {
     type: 'boolean',
-    describe: 'Set to true to enable debugging WebMCP tools.',
+    describe:
+      'Set to true to enable debugging WebMCP tools. Requires Chrome 149+ with the following flags: `--enable-features=WebMCPTesting,DevToolsWebMCPSupport`',
   },
   chromeArg: {
     type: 'array',