diff --git a/mem0-ts/src/client/mem0.ts b/mem0-ts/src/client/mem0.ts
index dd638bbc6..ff259f2fe 100644
--- a/mem0-ts/src/client/mem0.ts
+++ b/mem0-ts/src/client/mem0.ts
@@ -404,10 +404,10 @@ export default class MemoryClient {
       ...(filters && { filters }),
     };
 
-    let url = `${this.host}/v3/memories/`;
-    if (page && pageSize) {
-      url += `?page=${page}&page_size=${pageSize}`;
-    }
+    const queryParams: string[] = [];
+    if (page !== undefined) queryParams.push(`page=${page}`);
+    if (pageSize !== undefined) queryParams.push(`page_size=${pageSize}`);
+    const url = `${this.host}/v3/memories/${queryParams.length ? `?${queryParams.join("&")}` : ""}`;
 
     const response = await this._fetchWithErrorHandling(url, {
       method: "POST",
diff --git a/mem0-ts/src/client/tests/memoryClient.search.test.ts b/mem0-ts/src/client/tests/memoryClient.search.test.ts
index 021187867..be85df9f5 100644
--- a/mem0-ts/src/client/tests/memoryClient.search.test.ts
+++ b/mem0-ts/src/client/tests/memoryClient.search.test.ts
@@ -373,3 +373,56 @@ describe("MemoryClient - getAll() entity param rejection", () => {
     expect(getFetchBody(call!).show_expired).toBe(true);
   });
 });
+
+describe("MemoryClient - getAll() page/pageSize query params", () => {
+  test("sends no query params when neither page nor pageSize is provided", async () => {
+    const extra = new Map<string, { status: number; body: unknown }>();
+    extra.set("/v3/memories/", { status: 200, body: { results: [] } });
+    const mock = setupMockFetch(extra);
+
+    const client = new MemoryClient({ apiKey: TEST_API_KEY });
+    await client.getAll({ filters: { user_id: "u1" } });
+
+    const call = findFetchCall(mock, "/v3/memories/", "POST");
+    expect(call![0]).not.toContain("?");
+  });
+
+  test("sends page alone as a query param", async () => {
+    const extra = new Map<string, { status: number; body: unknown }>();
+    extra.set("/v3/memories/", { status: 200, body: { results: [] } });
+    const mock = setupMockFetch(extra);
+
+    const client = new MemoryClient({ apiKey: TEST_API_KEY });
+    await client.getAll({ filters: { user_id: "u1" }, page: 2 });
+
+    const call = findFetchCall(mock, "/v3/memories/", "POST");
+    expect(call![0]).toContain("?page=2");
+    expect(call![0]).not.toContain("page_size");
+  });
+
+  test("sends pageSize alone as a query param", async () => {
+    const extra = new Map<string, { status: number; body: unknown }>();
+    extra.set("/v3/memories/", { status: 200, body: { results: [] } });
+    const mock = setupMockFetch(extra);
+
+    const client = new MemoryClient({ apiKey: TEST_API_KEY });
+    await client.getAll({ filters: { user_id: "u1" }, pageSize: 50 });
+
+    const call = findFetchCall(mock, "/v3/memories/", "POST");
+    expect(call![0]).toContain("?page_size=50");
+    expect(call![0]).not.toContain("?page=50");
+  });
+
+  test("sends both page and pageSize when provided, including falsy 0 values", async () => {
+    const extra = new Map<string, { status: number; body: unknown }>();
+    extra.set("/v3/memories/", { status: 200, body: { results: [] } });
+    const mock = setupMockFetch(extra);
+
+    const client = new MemoryClient({ apiKey: TEST_API_KEY });
+    await client.getAll({ filters: { user_id: "u1" }, page: 0, pageSize: 0 });
+
+    const call = findFetchCall(mock, "/v3/memories/", "POST");
+    expect(call![0]).toContain("page=0");
+    expect(call![0]).toContain("page_size=0");
+  });
+});
diff --git a/mem0/client/main.py b/mem0/client/main.py
index a1b68d73b..a52986dcd 100644
--- a/mem0/client/main.py
+++ b/mem0/client/main.py
@@ -275,11 +275,8 @@ class MemoryClient:
         kwargs = {**(options.model_dump(exclude_unset=True) if options else {}), **kwargs}
         params = self._prepare_params(kwargs)
 
-        if "page" in params and "page_size" in params:
-            query_params = {
-                "page": params.pop("page"),
-                "page_size": params.pop("page_size"),
-            }
+        query_params = {key: params.pop(key) for key in ("page", "page_size") if key in params}
+        if query_params:
             response = self.client.post("/v3/memories/", json=params, params=query_params)
         else:
             response = self.client.post("/v3/memories/", json=params)
@@ -1198,11 +1195,8 @@ class AsyncMemoryClient:
         kwargs = {**(options.model_dump(exclude_unset=True) if options else {}), **kwargs}
         params = self._prepare_params(kwargs)
 
-        if "page" in params and "page_size" in params:
-            query_params = {
-                "page": params.pop("page"),
-                "page_size": params.pop("page_size"),
-            }
+        query_params = {key: params.pop(key) for key in ("page", "page_size") if key in params}
+        if query_params:
             response = await self.async_client.post("/v3/memories/", json=params, params=query_params)
         else:
             response = await self.async_client.post("/v3/memories/", json=params)
diff --git a/tests/test_client.py b/tests/test_client.py
index d7d11ca86..07fc2052b 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -8,6 +8,7 @@ import httpx
 import pytest
 import requests
 
+from mem0.client.main import AsyncMemoryClient
 from mem0.client.types import GetAllMemoryOptions, SearchMemoryOptions
 
 
@@ -181,6 +182,150 @@ class TestGetAllTypedOptionsParity:
         )
 
 
+class TestGetAllPageSizeQueryParams:
+    """MEM-6227: page and page_size must reach the API as query params independently."""
+
+    def test_get_all_page_size_alone_lands_in_query_params(self, mock_memory_client):
+        """get_all(page_size=...) without page should send page_size as a query param."""
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        mock_memory_client.client.post.return_value = mock_response
+
+        mock_memory_client.get_all(filters={"user_id": "u1"}, page_size=50)
+
+        mock_memory_client.client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page_size": 50},
+        )
+
+    def test_get_all_page_alone_lands_in_query_params(self, mock_memory_client):
+        """get_all(page=...) without page_size should send page as a query param."""
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        mock_memory_client.client.post.return_value = mock_response
+
+        mock_memory_client.get_all(filters={"user_id": "u1"}, page=2)
+
+        mock_memory_client.client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page": 2},
+        )
+
+    def test_get_all_page_and_page_size_together(self, mock_memory_client):
+        """get_all(page=..., page_size=...) should send both as query params."""
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        mock_memory_client.client.post.return_value = mock_response
+
+        mock_memory_client.get_all(filters={"user_id": "u1"}, page=2, page_size=50)
+
+        mock_memory_client.client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page": 2, "page_size": 50},
+        )
+
+    def test_get_all_neither_page_nor_page_size_sends_no_query_params(self, mock_memory_client):
+        """get_all() without page or page_size should not pass a params kwarg."""
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        mock_memory_client.client.post.return_value = mock_response
+
+        mock_memory_client.get_all(filters={"user_id": "u1"})
+
+        mock_memory_client.client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+        )
+
+    def test_async_get_all_page_size_alone_lands_in_query_params(self):
+        asyncio.run(self._assert_async_get_all_page_size_alone())
+
+    async def _assert_async_get_all_page_size_alone(self):
+        client = AsyncMemoryClient.__new__(AsyncMemoryClient)
+        client.async_client = MagicMock()
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        client.async_client.post = AsyncMock(return_value=mock_response)
+
+        with patch("mem0.client.main.capture_client_event"):
+            await client.get_all(filters={"user_id": "u1"}, page_size=50)
+
+        client.async_client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page_size": 50},
+        )
+
+    def test_async_get_all_page_alone_lands_in_query_params(self):
+        asyncio.run(self._assert_async_get_all_page_alone())
+
+    async def _assert_async_get_all_page_alone(self):
+        """get_all(page=0) without page_size should still send page=0 as a query param."""
+        client = AsyncMemoryClient.__new__(AsyncMemoryClient)
+        client.async_client = MagicMock()
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        client.async_client.post = AsyncMock(return_value=mock_response)
+
+        with patch("mem0.client.main.capture_client_event"):
+            await client.get_all(filters={"user_id": "u1"}, page=0)
+
+        client.async_client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page": 0},
+        )
+
+    def test_async_get_all_page_and_page_size_together(self):
+        asyncio.run(self._assert_async_get_all_page_and_page_size_together())
+
+    async def _assert_async_get_all_page_and_page_size_together(self):
+        """get_all(page=0, page_size=0) should send both as query params despite being falsy."""
+        client = AsyncMemoryClient.__new__(AsyncMemoryClient)
+        client.async_client = MagicMock()
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        client.async_client.post = AsyncMock(return_value=mock_response)
+
+        with patch("mem0.client.main.capture_client_event"):
+            await client.get_all(filters={"user_id": "u1"}, page=0, page_size=0)
+
+        client.async_client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+            params={"page": 0, "page_size": 0},
+        )
+
+    def test_async_get_all_neither_page_nor_page_size_sends_no_query_params(self):
+        asyncio.run(self._assert_async_get_all_neither_page_nor_page_size())
+
+    async def _assert_async_get_all_neither_page_nor_page_size(self):
+        client = AsyncMemoryClient.__new__(AsyncMemoryClient)
+        client.async_client = MagicMock()
+        mock_response = MagicMock()
+        mock_response.json.return_value = {"results": []}
+        mock_response.raise_for_status.return_value = None
+        client.async_client.post = AsyncMock(return_value=mock_response)
+
+        with patch("mem0.client.main.capture_client_event"):
+            await client.get_all(filters={"user_id": "u1"})
+
+        client.async_client.post.assert_called_once_with(
+            "/v3/memories/",
+            json={"filters": {"user_id": "u1"}},
+        )
+
+
 class TestUpdateExpirationDate:
     """Tests for update expiration_date payload handling."""