From 18707ebdea1c84e92bc1ab7624725a97f90d8702 Mon Sep 17 00:00:00 2001
From: Mahmut CAVDAR <4072246+mcavdar@users.noreply.github.com>
Date: Sat, 8 Nov 2025 10:47:19 +0100
Subject: [PATCH 1/2] Add checkpointer to agent creation

---
 src/oss/langchain/short-term-memory.mdx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/oss/langchain/short-term-memory.mdx b/src/oss/langchain/short-term-memory.mdx
index fb771648f9..e87bb734c5 100644
--- a/src/oss/langchain/short-term-memory.mdx
+++ b/src/oss/langchain/short-term-memory.mdx
@@ -952,6 +952,7 @@ graph TD
 :::python
 ```python
 from langchain.messages import RemoveMessage
+from langchain_core.runnables import RunnableConfig
 from langgraph.graph.message import REMOVE_ALL_MESSAGES
 from langgraph.checkpoint.memory import InMemorySaver
 from langchain.agents import create_agent, AgentState
@@ -979,10 +980,13 @@ def trim_messages(state: AgentState, runtime: Runtime) -> dict[str, Any] | None:
         ]
     }
 
+checkpointer = InMemorySaver()
+
 agent = create_agent(
     model,
     tools=tools,
-    middleware=[trim_messages]
+    middleware=[trim_messages],
+    checkpointer=checkpointer
 )
 
 config: RunnableConfig = {"configurable": {"thread_id": "1"}}

From e60ad3be7a40ed4c96b35158987c1ef72a2e0717 Mon Sep 17 00:00:00 2001
From: Mahmut CAVDAR <4072246+mcavdar@users.noreply.github.com>
Date: Sun, 16 Nov 2025 06:18:40 +0000
Subject: [PATCH 2/2] add checkpointer js as well

---
 src/oss/langchain/short-term-memory.mdx | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/oss/langchain/short-term-memory.mdx b/src/oss/langchain/short-term-memory.mdx
index e87bb734c5..f7c0eb93e0 100644
--- a/src/oss/langchain/short-term-memory.mdx
+++ b/src/oss/langchain/short-term-memory.mdx
@@ -980,13 +980,11 @@ def trim_messages(state: AgentState, runtime: Runtime) -> dict[str, Any] | None:
         ]
     }
 
-checkpointer = InMemorySaver()
-
 agent = create_agent(
     model,
     tools=tools,
     middleware=[trim_messages],
-    checkpointer=checkpointer
+    checkpointer=InMemorySaver()
 )
 
 config: RunnableConfig = {"configurable": {"thread_id": "1"}}
@@ -1009,6 +1007,7 @@ If you'd like me to call you a nickname or use a different name, just say the wo
 ```typescript
 import { RemoveMessage } from "@langchain/core/messages";
 import { createAgent, createMiddleware, trimMessages, type AgentState } from "langchain";
+import { MemorySaver } from "@langchain/langgraph";
 
 const trimMessageHistory = createMiddleware({
   name: "TrimMessages",
@@ -1024,10 +1023,12 @@ const trimMessageHistory = createMiddleware({
   },
 });
 
+const checkpointer = new MemorySaver();
 const agent = createAgent({
     model: "gpt-5-nano",
     tools: [],
     middleware: [trimMessageHistory],
+    checkpointer,
 });
 ```
 :::