feat: support --accept-insecure-certs CLI (#231)

Closes #155

Exposes the Puppeteer option only for the instances launched by the MCP
to avoid changing behavior for instances started by other means.

Author: OrKoN

README.md

@@ -280,6 +280,10 @@ The Chrome DevTools MCP server supports the following configuration option:
   Proxy server configuration for Chrome passed as --proxy-server when launching the browser. See https://www.chromium.org/developers/design-documents/network-settings/ for details.
   - **Type:** string
 
+- **`--acceptInsecureCerts`**
+  If enabled, ignores errors relative to self-signed and expired certificates. Use with caution.
+  - **Type:** boolean
+
 <!-- END AUTO GENERATED OPTIONS -->
 
 Pass them via the `args` property in the JSON configuration. For example:

src/browser.ts

@@ -57,6 +57,7 @@ export async function ensureBrowserConnected(browserURL: string) {
 }
 
 interface McpLaunchOptions {
+  acceptInsecureCerts?: boolean;
   executablePath?: string;
   customDevTools?: string;
   channel?: Channel;
@@ -116,6 +117,7 @@ export async function launch(options: McpLaunchOptions): Promise<Browser> {
       pipe: true,
       headless,
       args,
+      acceptInsecureCerts: options.acceptInsecureCerts,
     });
     if (options.logFile) {
       // FIXME: we are probably subscribing too late to catch startup logs. We

src/cli.ts

@@ -76,6 +76,10 @@ export const cliOptions = {
     type: 'string' as const,
     description: `Proxy server configuration for Chrome passed as --proxy-server when launching the browser. See https://www.chromium.org/developers/design-documents/network-settings/ for details.`,
   },
+  acceptInsecureCerts: {
+    type: 'boolean' as const,
+    description: `If enabled, ignores errors relative to self-signed and expired certificates. Use with caution.`,
+  },
 };
 
 export function parseArguments(version: string, argv = process.argv) {

src/main.ts

@@ -84,6 +84,7 @@ async function getContext(): Promise<McpContext> {
         logFile,
         viewport: args.viewport,
         args: extraArgs,
+        acceptInsecureCerts: args.acceptInsecureCerts,
       });
 
   if (context?.browser !== browser) {