From 4e0faa86ac62c760b96489cb521f4ab9367dea17 Mon Sep 17 00:00:00 2001
From: Ergun Erdogmus <ergunsh@chromium.org>
Date: Mon, 12 Jan 2026 13:40:01 +0100
Subject: [PATCH 1/2] chore: add usage statistics CLI flag

---
 src/cli.ts        |  8 ++++++++
 src/main.ts       |  8 ++++++++
 tests/cli.test.ts | 24 ++++++++++++++++++++++++
 3 files changed, 40 insertions(+)

diff --git a/src/cli.ts b/src/cli.ts
index db2680587..8d71f8d9e 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -178,6 +178,14 @@ export const cliOptions = {
     default: true,
     describe: 'Set to false to exclude tools related to network.',
   },
+  usageStatistics: {
+    type: 'boolean',
+    // Marked as `false` until the feature is ready to be enabled by default.
+    default: false,
+    hidden: true,
+    describe:
+      'Set to false to opt-out of usage statistics collection.',
+  },
 } satisfies Record<string, YargsOptions>;
 
 export function parseArguments(version: string, argv = process.argv) {
diff --git a/src/main.ts b/src/main.ts
index 84bb6d9b5..0d3bf7e7a 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -98,6 +98,14 @@ const logDisclaimers = () => {
 debug, and modify any data in the browser or DevTools.
 Avoid sharing sensitive or personal information that you do not want to share with MCP clients.`,
   );
+
+  if (args.usageStatistics) {
+    console.error(
+      `
+Google collects usage statistics to improve Chrome DevTools MCP. To opt-out, run with --no-usage-statistics.
+For more details, visit: https://github.com/ChromeDevTools/chrome-devtools-mcp#usage-statistics`,
+    );
+  }
 };
 
 const toolMutex = new Mutex();
diff --git a/tests/cli.test.ts b/tests/cli.test.ts
index 1312e630b..e46dee64d 100644
--- a/tests/cli.test.ts
+++ b/tests/cli.test.ts
@@ -19,6 +19,8 @@ describe('cli args parsing', () => {
     categoryNetwork: true,
     'auto-connect': undefined,
     autoConnect: undefined,
+    'usage-statistics': false,
+    usageStatistics: false,
   };
 
   it('parses with default args', async () => {
@@ -222,4 +224,26 @@ describe('cli args parsing', () => {
       autoConnect: true,
     });
   });
+
+  it('parses usage statistics flag', async () => {
+    // Test default (should be false)
+    const defaultArgs = parseArguments('1.0.0', ['node', 'main.js']);
+    assert.strictEqual(defaultArgs.usageStatistics, false);
+
+    // Test enabling it
+    const enabledArgs = parseArguments('1.0.0', [
+      'node',
+      'main.js',
+      '--usage-statistics',
+    ]);
+    assert.strictEqual(enabledArgs.usageStatistics, true);
+
+    // Test disabling it
+    const disabledArgs = parseArguments('1.0.0', [
+      'node',
+      'main.js',
+      '--no-usage-statistics',
+    ]);
+    assert.strictEqual(disabledArgs.usageStatistics, false);
+  });
 });

From d56451b7dafc9ac0f9b3bed8a0b3a0d611f6492f Mon Sep 17 00:00:00 2001
From: Ergun Erdogmus <ergunsh@chromium.org>
Date: Mon, 12 Jan 2026 14:47:37 +0100
Subject: [PATCH 2/2] chore: fix formatting

---
 src/cli.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/cli.ts b/src/cli.ts
index 8d71f8d9e..be691dfb0 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -183,8 +183,7 @@ export const cliOptions = {
     // Marked as `false` until the feature is ready to be enabled by default.
     default: false,
     hidden: true,
-    describe:
-      'Set to false to opt-out of usage statistics collection.',
+    describe: 'Set to false to opt-out of usage statistics collection.',
   },
 } satisfies Record<string, YargsOptions>;