self-host langgraph

web/agent/server.py

@@ -0,0 +1,37 @@
+"""
+Self-hosted LangGraph agent server using CopilotKit's AG-UI protocol.
+"""
+
+import os
+from fastapi import FastAPI
+import uvicorn
+from dotenv import load_dotenv
+
+from copilotkit import LangGraphAGUIAgent
+from ag_ui_langgraph import add_langgraph_fastapi_endpoint
+from main import graph
+
+load_dotenv()
+
+app = FastAPI(title="Cavepedia Agent")
+
+add_langgraph_fastapi_endpoint(
+    app=app,
+    agent=LangGraphAGUIAgent(
+        name="vpi_1000",
+        description="AI assistant with access to cave-related information through the Cavepedia MCP server",
+        graph=graph,
+    ),
+    path="/",
+)
+
+
+@app.get("/health")
+def health():
+    """Health check."""
+    return {"status": "ok"}
+
+
+if __name__ == "__main__":
+    port = int(os.getenv("PORT", "8000"))
+    uvicorn.run(app, host="0.0.0.0", port=port)