define environment parameter for system prompt

Author: ks6088ts

.env.template

@@ -101,3 +101,10 @@ SUMMARIZER_TYPE="mock" # Options: "mock", "llm"
 ## Notifier Settings
 NOTIFIER_TYPE="mock" # Options: "mock", "slack"
 NOTIFIER_SLACK_WEBHOOK_URL="https://hooks.slack.com/services/xxx"
+
+# ---------
+# Agents
+# ---------
+
+## Chat with Tools Agent Settings
+CHAT_WITH_TOOLS_AGENT_SYSTEM_PROMPT="You are a helpful assistant. Use appropriate tools to answer user questions."

template_langgraph/services/streamlits/pages/chat_with_tools_agent.py

@@ -8,6 +8,7 @@
 
 import streamlit as st
 from audio_recorder_streamlit import audio_recorder
+from dotenv import load_dotenv
 from langchain_community.callbacks.streamlit import (
     StreamlitCallbackHandler,
 )
@@ -28,6 +29,10 @@
 
 logger = get_logger(__name__)
 logger.setLevel("DEBUG")
+load_dotenv(
+    override=True,
+    verbose=True,
+)
 
 
 class CheckpointType(str, Enum):
@@ -134,6 +139,7 @@ def ensure_agent_graph(selected_tools: list) -> None:
             store=SqliteStore(
                 conn=store_conn,
             ),
+            system_prompt=os.getenv("CHAT_WITH_TOOLS_AGENT_SYSTEM_PROMPT", None),
         ).create_graph()
         st.session_state["graph_tools_signature"] = signature