diff --git a/README.md b/README.md
index 7030ff4..35f34b2 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,9 @@ Example `~/.config/bird/config.json5` (Firefox + GraphQL defaults):
   // Prefer Firefox cookies by default
   firefoxProfile: "default-release",
   // Optional: Sweetistics defaults if you want fallback/overrides
-  sweetisticsApiKey: "sweet-..."
+  sweetisticsApiKey: "sweet-...",
+  // Disable Chrome cookies entirely (optional)
+  allowChrome: false
 }
 ```
 
diff --git a/src/index.ts b/src/index.ts
index 7ba5f9c..5cc23bc 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -44,6 +44,8 @@ type BirdConfig = {
   firefoxProfile?: string;
   sweetisticsApiKey?: string;
   sweetisticsBaseUrl?: string;
+  allowChrome?: boolean;
+  allowFirefox?: boolean;
 };
 
 function readConfigFile(path: string): Partial<BirdConfig> {
@@ -210,6 +212,8 @@ program
       ct0: opts.ct0,
       chromeProfile: opts.chromeProfile || config.chromeProfile,
       firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
+      allowChrome: config.allowChrome ?? true,
+      allowFirefox: config.allowFirefox ?? true,
     });
 
     for (const warning of warnings) {
@@ -299,6 +303,8 @@ program
       ct0: opts.ct0,
       chromeProfile: opts.chromeProfile || config.chromeProfile,
       firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
+      allowChrome: config.allowChrome ?? true,
+      allowFirefox: config.allowFirefox ?? true,
     });
 
     for (const warning of warnings) {
@@ -390,6 +396,8 @@ program
       ct0: opts.ct0,
       chromeProfile: opts.chromeProfile || config.chromeProfile,
       firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
+      allowChrome: config.allowChrome ?? true,
+      allowFirefox: config.allowFirefox ?? true,
     });
 
     for (const warning of warnings) {
@@ -778,6 +786,8 @@ program
       ct0: opts.ct0,
       chromeProfile: opts.chromeProfile || config.chromeProfile,
       firefoxProfile: opts.firefoxProfile || config.firefoxProfile,
+      allowChrome: config.allowChrome ?? true,
+      allowFirefox: config.allowFirefox ?? true,
     });
 
     for (const warning of warnings) {
diff --git a/src/lib/cookies.ts b/src/lib/cookies.ts
index 88e6de3..83a9c2a 100644
--- a/src/lib/cookies.ts
+++ b/src/lib/cookies.ts
@@ -294,6 +294,8 @@ export async function resolveCredentials(options: {
   ct0?: string;
   chromeProfile?: string;
   firefoxProfile?: string;
+  allowChrome?: boolean;
+  allowFirefox?: boolean;
 }): Promise<CookieExtractionResult> {
   const warnings: string[] = [];
   const cookies: TwitterCookies = {
@@ -338,8 +340,11 @@ export async function resolveCredentials(options: {
     }
   }
 
+  const allowFirefox = options.allowFirefox ?? true;
+  const allowChrome = options.allowChrome ?? true;
+
   // 3. Firefox cookies (preferred browser fallback)
-  if (!cookies.authToken || !cookies.ct0) {
+  if (allowFirefox && (!cookies.authToken || !cookies.ct0)) {
     const firefoxResult = await extractCookiesFromFirefox(options.firefoxProfile);
     warnings.push(...firefoxResult.warnings);
 
@@ -354,7 +359,7 @@ export async function resolveCredentials(options: {
   }
 
   // 4. Chrome cookies (secondary browser fallback)
-  if (!cookies.authToken || !cookies.ct0) {
+  if (allowChrome && (!cookies.authToken || !cookies.ct0)) {
     const chromeResult = await extractCookiesFromChrome(options.chromeProfile);
     warnings.push(...chromeResult.warnings);