feat: experimental click_at(x,y) tool (#1788)

Specify `--experimental-vision` argument for `chrome-devtools-mcp` to
enable additional tools for vision models. Currently, only
`click_at(x,y)` tool is supported. Usually you need a specialized model
that can provide accurate coordinates based on the screenshots.

Closes #403

Author: OrKoN

README.md

@@ -539,6 +539,10 @@ The Chrome DevTools MCP server supports the following configuration option:
   If enabled, ignores errors relative to self-signed and expired certificates. Use with caution.
   - **Type:** boolean
 
+- **`--experimentalVision`/ `--experimental-vision`**
+  Whether to enable coordinate-based tools such as click_at(x,y). Usually requires a computer-use model able to produce accurate coordinates by looking at screenshots.
+  - **Type:** boolean
+
 - **`--experimentalScreencast`/ `--experimental-screencast`**
   Exposes experimental screencast tools (requires ffmpeg). Install ffmpeg https://www.ffmpeg.org/download.html and ensure it is available in the MCP server PATH.
   - **Type:** boolean

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

@@ -160,8 +160,9 @@ export const cliOptions = {
   },
   experimentalVision: {
     type: 'boolean',
-    describe: 'Whether to enable vision tools',
-    hidden: true,
+    describe:
+      'Whether to enable coordinate-based tools such as click_at(x,y). Usually requires a computer-use model able to produce accurate coordinates by looking at screenshots.',
+    hidden: false,
   },
   experimentalStructuredContent: {
     type: 'boolean',