Added OPEY_SYSTEM_PROMPT

Author: simonredfern

.env.example

@@ -159,6 +159,10 @@ ANONYMOUS_SESSION_TOKEN_LIMIT=10000
 # Maximum number of requests an anonymous session can make before requiring authentication
 ANONYMOUS_SESSION_REQUEST_LIMIT=20
 
+# Custom system prompt for Opey (optional)
+# If not set, uses the default prompt defined in src/agent/components/chains.py
+# OPEY_SYSTEM_PROMPT="Your custom system prompt here..."
+
 # Model Config
 ## you will need the appropriate API key for the model provider you choose
 ## i.e. OPENAI_API_KEY or ANTHROPIC_API_KEY

src/agent/graph_builder.py

@@ -60,7 +60,7 @@ def __init__(self):
     def reset(self):
         """Reset builder to default state"""
         self._tools: List[BaseTool] = []
-        self._system_prompt: str = opey_system_prompt_template
+        self._system_prompt: str = os.getenv("OPEY_SYSTEM_PROMPT", opey_system_prompt_template)
         self._model_name: str = "medium"
         self._temperature: float = 0.7
         self._checkpointer: Optional[BaseCheckpointSaver] = None