diff --git a/endpoints/Add_user_organization.post.py b/endpoints/Add_user_organization.post.py
index e69de29..a35ab90 100644
--- a/endpoints/Add_user_organization.post.py
+++ b/endpoints/Add_user_organization.post.py
@@ -0,0 +1,34 @@
+from fastapi import APIRouter, HTTPException
+
+organizations = []  # In-memory storage
+
+router = APIRouter()
+
+@router.post("/Add_user_organization")
+async def add_user_organization(
+    user_id: str,
+    organization_id: str
+):
+    """Add user to organization endpoint"""
+    org = next((o for o in organizations if o["id"] == organization_id), None)
+    if not org:
+        raise HTTPException(status_code=400, detail="Organization not found")
+
+    if user_id in org.get("members", []):
+        raise HTTPException(status_code=400, detail="User already in organization")
+
+    if "members" not in org:
+        org["members"] = []
+    
+    org["members"].append(user_id)
+
+    return {
+        "message": "User added to organization successfully",
+        "organization_id": organization_id,
+        "user_id": user_id,
+        "status": "active",
+        "features": {
+            "access_level": "member",
+            "added_at": "now"
+        }
+    }
\ No newline at end of file