diff --git a/apps/web/src/components/GitHubStarPrompt.test.ts b/apps/web/src/components/GitHubStarPrompt.test.ts
index f748ec8b82209..b763568a1c457 100644
--- a/apps/web/src/components/GitHubStarPrompt.test.ts
+++ b/apps/web/src/components/GitHubStarPrompt.test.ts
@@ -29,8 +29,10 @@ vi.mock("@t3tools/client-runtime/state/runtime", () => ({
 
 const environmentId = EnvironmentId.make("environment-1");
 const IDLE_MS = 30_000;
+let forkEnabled = true;
 
-function setup({ sent = 0, writable = true, alreadyStarred = false } = {}) {
+function setup({ sent = 0, writable = true, alreadyStarred = false, enabled = true } = {}) {
+  forkEnabled = enabled;
   add.mockReset();
   update.mockReset();
   openExternal.mockClear();
@@ -66,6 +68,7 @@ function setup({ sent = 0, writable = true, alreadyStarred = false } = {}) {
 async function startSession() {
   vi.resetModules();
   const session = await import("./GitHubStarPrompt");
+  session.setForkStarPromptEnabledForTest(forkEnabled);
   return {
     // Sends a prompt, then leaves the page idle long enough to ask.
     send: async () => {
@@ -83,6 +86,13 @@ const click = (props: unknown) => (props as { onClick: () => unknown }).onClick(
 describe("recordPromptSent", () => {
   vi.useFakeTimers();
 
+  it("never asks when disabled on the fork by default", async () => {
+    setup({ sent: 5, enabled: false });
+    await (await startSession()).send();
+    expect(add).not.toHaveBeenCalled();
+    vi.unstubAllGlobals();
+  });
+
   it("asks only after the focused page is idle", async () => {
     setup({ sent: 5 });
     (await startSession()).sendWithoutWaiting();
diff --git a/apps/web/src/components/GitHubStarPrompt.tsx b/apps/web/src/components/GitHubStarPrompt.tsx
index 679d61b1f3502..aaacf83e01dc6 100644
--- a/apps/web/src/components/GitHubStarPrompt.tsx
+++ b/apps/web/src/components/GitHubStarPrompt.tsx
@@ -138,11 +138,22 @@ async function starRepository(environmentId: EnvironmentId) {
   return result._tag === "Success" && result.value;
 }
 
+/**
+ * Fork policy: the upstream GitHub star prompt is disabled on the EK fork.
+ * Kept configurable for testing.
+ */
+export let forkStarPromptEnabled = false;
+
+export function setForkStarPromptEnabledForTest(enabled: boolean): void {
+  forkStarPromptEnabled = enabled;
+}
+
 /**
  * Counts a sent prompt. After more than five, asks once per session for a star until dismissed,
  * unless the environment's GitHub account already starred the repo. Waits until the user is idle.
  */
 export async function recordPromptSent(environmentId: EnvironmentId): Promise<void> {
+  if (!forkStarPromptEnabled) return;
   if (shownThisSession) return;
   try {
     if (getLocalStorageItem(DISMISSED_KEY, Schema.Boolean)) return;
diff --git a/scripts/fork-footprint-budget.json b/scripts/fork-footprint-budget.json
index 461b6e230474f..f476b9ed57a11 100644
--- a/scripts/fork-footprint-budget.json
+++ b/scripts/fork-footprint-budget.json
@@ -46,7 +46,7 @@
     "apps/mobile/src/features/threads/NewTaskDraftRouteScreen.tsx": 3,
     "apps/mobile/src/features/threads/ThreadComposer.tsx": 11,
     "apps/mobile/src/features/threads/ThreadDetailScreen.tsx": 30,
-    "apps/mobile/src/features/threads/ThreadFeed.tsx": 244,
+    "apps/mobile/src/features/threads/ThreadFeed.tsx": 243,
     "apps/mobile/src/features/threads/ThreadHeader.tsx": 4,
     "apps/mobile/src/features/threads/ThreadNavigationSidebar.tsx": 44,
     "apps/mobile/src/features/threads/ThreadRouteScreen.tsx": 23,