Create app.py

app.py

@@ -0,0 +1,34 @@
+import os
+import httpx
+from fastapi import FastAPI
+from fastmcp import MCP, Tool
+
+app = FastAPI()
+
+# Initialize MCP server
+mcp = MCP(name="SAP SupplierInvoice MCP Proxy", version="0.1")
+
+# Define an MCP Tool wrapping the SAP API
+@mcp.tool(name="get_supplier_invoices", description="Fetch 50 supplier invoices from SAP API")
+async def get_supplier_invoices():
+    api_key = os.getenv("API_KEY")
+    if not api_key:
+        return {"error": "API_KEY secret is not configured"}
+
+    url = (
+        "https://sandbox.api.sap.com/s4hanacloud/sap/opu/odata/sap/"
+        "API_SUPPLIERINVOICE_PROCESS_SRV/A_BR_SupplierInvoiceNFDocument?$top=50&$inlinecount=allpages"
+    )
+    headers = {
+        "APIKey": api_key,
+        "Accept": "application/json",
+    }
+    async with httpx.AsyncClient() as client:
+        resp = await client.get(url, headers=headers)
+        if resp.status_code == 200:
+            return resp.json()
+        else:
+            return {"error": resp.status_code, "message": resp.text}
+
+# Include the MCP routes into FastAPI app
+mcp.attach_to_app(app)