diff --git a/apps/platformnotifications/src/platformnotifications.app.ts b/apps/platformnotifications/src/platformnotifications.app.ts
index eb2f2c4..a707445 100644
--- a/apps/platformnotifications/src/platformnotifications.app.ts
+++ b/apps/platformnotifications/src/platformnotifications.app.ts
@@ -21,9 +21,9 @@ function unauthorized(c: Context<App>) {
 }
 
 /**
- * The notification categories `GET /config/categories` serves — a STUB standing in for the
- * real list until something here actually defines categories and stores preferences against
- * them.
+ * The notification categories `GET /config/categories` serves as its `Results` — a STUB
+ * standing in for the real list until something here actually defines categories and stores
+ * preferences against them.
  *
  * `CategoryId` is the client's own id for the category, `Importance` its ranking (0 being
  * the lowest observed), and `IsMuteable` whether the player may switch it off at all. The
@@ -74,9 +74,15 @@ const app = new Hono<App>()
 	})
 
 	// The notification categories a player can be shown toggles for — the "what may we notify
-	// you about" list. A bare array of PascalCase categories, no envelope. No auth: the list
-	// is server-side config, the same for every player, and a caller's own preferences are
-	// the per-account routes above.
+	// you about" list. A `{ Results, TotalResults }` PAGE of PascalCase categories, the same
+	// envelope the other paged reads on this server use — not the bare array this once
+	// served. No auth: the list is server-side config, the same for every player, and a
+	// caller's own preferences are the per-account routes above.
+	//
+	// `TotalResults` counts the whole list rather than the page, and there is only ever one
+	// page here — nothing pages a list this short — so it is the array's own length. Counting
+	// it rather than writing the number keeps the two from disagreeing when a category is
+	// added.
 	//
 	// STUB. Nothing here defines categories or stores a preference against one, so this is
 	// one hand-written entry standing in for the real list — the toggle it draws does
@@ -84,7 +90,10 @@ const app = new Hono<App>()
 	// the field the client renders, so the stub is visible in-game instead of looking like
 	// a real (and broken) setting. `Name` is left clean in case the client keys off it.
 	.get('/config/categories', async (c) => {
-		return c.json(NOTIFICATION_CATEGORIES)
+		return c.json({
+			Results: NOTIFICATION_CATEGORIES,
+			TotalResults: NOTIFICATION_CATEGORIES.length,
+		})
 	})
 
 	// The caller's CRM configuration — the campaign/messaging settings the client fetches on
diff --git a/apps/platformnotifications/src/test/integration/api.test.ts b/apps/platformnotifications/src/test/integration/api.test.ts
index 25b22e9..b6b33b5 100644
--- a/apps/platformnotifications/src/test/integration/api.test.ts
+++ b/apps/platformnotifications/src/test/integration/api.test.ts
@@ -75,27 +75,33 @@ it('401s the gameplay-invites check without a bearer token', async () => {
 })
 
 it('serves the stub notification categories', async () => {
-	// A bare array of PascalCase categories, and no auth — the list is server-side config
-	// rather than anything per-player.
+	// A `{ Results, TotalResults }` page of PascalCase categories — not a bare array — and no
+	// auth: the list is server-side config rather than anything per-player.
 	const res = await SELF.fetch(`${ORIGIN}/config/categories`)
 	expect(res.status).toBe(200)
-	const categories = (await res.json()) as Array<{
-		CategoryId: number
-		Importance: number
-		Name: string
-		Description: string
-		IsMuteable: boolean
-	}>
-	expect(categories).toHaveLength(1)
-	expect(categories[0]).toMatchObject({
+	const page = (await res.json()) as {
+		Results: Array<{
+			CategoryId: number
+			Importance: number
+			Name: string
+			Description: string
+			IsMuteable: boolean
+		}>
+		TotalResults: number
+	}
+	expect(page.Results).toHaveLength(1)
+	expect(page.Results[0]).toMatchObject({
 		CategoryId: 2,
 		Importance: 0,
 		Name: 'Friends',
 		IsMuteable: true,
 	})
+	// The total counts the whole list, and this list is served in one page — so it has to
+	// agree with what came back rather than being a number of its own.
+	expect(page.TotalResults).toBe(page.Results.length)
 	// The stub marker is in the DISPLAYED text, so a category that does nothing says so
 	// in-game rather than looking like a real setting. Keep it there while this is a stub.
-	expect(categories[0].Description).toContain('STUB')
+	expect(page.Results[0].Description).toContain('STUB')
 })
 
 it('serves the caller’s notification preferences', async () => {