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Fix agent message length #258

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Fix agent message length #258

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3111f21
Relocate message_trimming to have proper message length
glicerico May 27, 2025
8294e57
Install dotenv to avoid errors
glicerico May 27, 2025
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32 changes: 16 additions & 16 deletions examples/langgraph-agent/agent.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@
"\n",
"## Install dependencies\n",
"```shell\n",
"pip install zep-cloud langchain-openai langgraph ipywidgets\n",
"pip install zep-cloud langchain-openai langgraph ipywidgets dotenv\n",
"```"
]
},
Expand Down Expand Up @@ -236,6 +236,21 @@
" {memory.context}\"\"\"\n",
" )\n",
"\n",
" # Truncate the chat history to keep the state from growing unbounded\n",
" # In this example, we going to keep the state small for demonstration purposes\n",
" # We'll use Zep's Facts to maintain conversation context\n",
" state[\"messages\"] = trim_messages(\n",
" state[\"messages\"],\n",
" strategy=\"last\",\n",
" token_counter=len,\n",
" max_tokens=3,\n",
" start_on=\"human\",\n",
" end_on=(\"human\", \"tool\"),\n",
" include_system=True,\n",
" )\n",
"\n",
" logger.info(f\"Messages in state: {state['messages']}\")\n",
"\n",
" messages = [system_message] + state[\"messages\"]\n",
"\n",
" response = await llm.ainvoke(messages)\n",
Expand All @@ -255,21 +270,6 @@
" messages=messages_to_save,\n",
" )\n",
"\n",
" # Truncate the chat history to keep the state from growing unbounded\n",
" # In this example, we going to keep the state small for demonstration purposes\n",
" # We'll use Zep's Facts to maintain conversation context\n",
" state[\"messages\"] = trim_messages(\n",
" state[\"messages\"],\n",
" strategy=\"last\",\n",
" token_counter=len,\n",
" max_tokens=3,\n",
" start_on=\"human\",\n",
" end_on=(\"human\", \"tool\"),\n",
" include_system=True,\n",
" )\n",
"\n",
" logger.info(f\"Messages in state: {state['messages']}\")\n",
"\n",
" return {\"messages\": [response]}"
]
},
Expand Down