Remove support for passing string as input in the client.add() (#2749)

docs/features/timestamp.mdx

@@ -59,7 +59,10 @@ five_days_ago = current_time - timedelta(days=5)
 unix_timestamp = int(five_days_ago.timestamp())
 
 # Add memory with custom timestamp
-client.add("I'm travelling to SF", user_id="user1", timestamp=unix_timestamp)
+messages = [
+    {"role": "user", "content": "I'm travelling to SF"}
+]
+client.add(messages, user_id="user1", timestamp=unix_timestamp)
 ```
 
 ```javascript JavaScript
@@ -77,7 +80,10 @@ fiveDaysAgo.setDate(currentTime.getDate() - 5);
 const unixTimestamp = Math.floor(fiveDaysAgo.getTime() / 1000);
 
 // Add memory with custom timestamp
-client.add("I'm travelling to SF", { user_id: "user1", timestamp: unixTimestamp })
+const messages = [
+    {"role": "user", "content": "I'm travelling to SF"}
+]
+client.add(messages, { user_id: "user1", timestamp: unixTimestamp })
     .then(response => console.log(response))
     .catch(error => console.error(error));
 ```
@@ -119,14 +125,20 @@ For example, to create a memory with a timestamp of January 1, 2023:
 # January 1, 2023 timestamp
 january_2023_timestamp = 1672531200  # Unix timestamp for 2023-01-01 00:00:00 UTC
 
-client.add("Important historical information", user_id="user1", timestamp=january_2023_timestamp)
+messages = [
+    {"role": "user", "content": "I'm travelling to SF"}
+]
+client.add(messages, user_id="user1", timestamp=january_2023_timestamp)
 ```
 
 ```javascript JavaScript
 // January 1, 2023 timestamp
 const january2023Timestamp = 1672531200;  // Unix timestamp for 2023-01-01 00:00:00 UTC
 
-client.add("Important historical information", { user_id: "user1", timestamp: january2023Timestamp })
+const messages = [
+    {"role": "user", "content": "I'm travelling to SF"}
+]
+client.add(messages, { user_id: "user1", timestamp: january2023Timestamp })
     .then(response => console.log(response))
     .catch(error => console.error(error));
 ```

docs/platform/quickstart.mdx

@@ -64,7 +64,10 @@ client = AsyncMemoryClient()
 
 
 async def main():
-    response = await client.add("I'm travelling to SF", user_id="john")
+    messages = [
+        {"role": "user", "content": "I'm travelling to SF"}
+    ]
+    response = await client.add(messages, user_id="john")
     print(response)
 
 await main()
@@ -1547,11 +1550,17 @@ Fun fact: You can also delete the memory using the `add()` method by passing a n
 <CodeGroup>
 
 ```python Python
-client.add("Delete all of my food preferences", user_id="alex")
+messages = [
+    {"role": "user", "content": "Delete all of my food preferences"}
+]
+client.add(messages, user_id="alex")
 ```
 
 ```javascript JavaScript
-client.add("Delete all of my food preferences", { user_id: "alex" })
+const messages = [
+    {"role": "user", "content": "Delete all of my food preferences"}
+]
+client.add(messages, { user_id: "alex" })
     .then(result => console.log(result))
     .catch(error => console.error(error));
 ```

mem0/client/main.py

@@ -3,7 +3,7 @@ import logging
 import os
 import warnings
 from functools import wraps
-from typing import Any, Dict, List, Optional, Union
+from typing import Any, Dict, List, Optional
 
 import httpx
 import requests
@@ -129,11 +129,11 @@ class MemoryClient:
             raise ValueError(f"Error: {error_message}")
 
     @api_error_handler
-    def add(self, messages: Union[str, List[Dict[str, str]]], **kwargs) -> Dict[str, Any]:
+    def add(self, messages: List[Dict[str, str]], **kwargs) -> Dict[str, Any]:
         """Add a new memory.
 
         Args:
-            messages: Either a string message or a list of message dictionaries.
+            messages: A list of message dictionaries.
             **kwargs: Additional parameters such as user_id, agent_id, app_id, metadata, filters.
 
         Returns:
@@ -667,7 +667,7 @@ class MemoryClient:
         return response.json()
 
     def _prepare_payload(
-        self, messages: Union[str, List[Dict[str, str]], None], kwargs: Dict[str, Any]
+        self, messages: List[Dict[str, str]], kwargs: Dict[str, Any]
     ) -> Dict[str, Any]:
         """Prepare the payload for API requests.
 
@@ -679,9 +679,6 @@ class MemoryClient:
             A dictionary containing the prepared payload.
         """
         payload = {}
-        if isinstance(messages, str):
-            payload["messages"] = [{"role": "user", "content": messages}]
-        elif isinstance(messages, list):
         payload["messages"] = messages
 
         payload.update({k: v for k, v in kwargs.items() if v is not None})
@@ -798,7 +795,7 @@ class AsyncMemoryClient:
             raise ValueError(f"Error: {error_message}")
 
     def _prepare_payload(
-        self, messages: Union[str, List[Dict[str, str]], None], kwargs: Dict[str, Any]
+        self, messages: List[Dict[str, str]], kwargs: Dict[str, Any]
     ) -> Dict[str, Any]:
         """Prepare the payload for API requests.
 
@@ -810,9 +807,6 @@ class AsyncMemoryClient:
             A dictionary containing the prepared payload.
         """
         payload = {}
-        if isinstance(messages, str):
-            payload["messages"] = [{"role": "user", "content": messages}]
-        elif isinstance(messages, list):
         payload["messages"] = messages
 
         payload.update({k: v for k, v in kwargs.items() if v is not None})
@@ -850,7 +844,7 @@ class AsyncMemoryClient:
         await self.async_client.aclose()
 
     @api_error_handler
-    async def add(self, messages: Union[str, List[Dict[str, str]]], **kwargs) -> Dict[str, Any]:
+    async def add(self, messages: List[Dict[str, str]], **kwargs) -> Dict[str, Any]:
         kwargs = self._prepare_params(kwargs)
         if kwargs.get("output_format") != "v1.1":
             kwargs["output_format"] = "v1.1"