Fix access to federation properties for services

Author: m-mohr

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - `DataCube.sar_backscatter()`: add corresponding band names to metadata when enabling "mask", "contributing_area", "local_incidence_angle" or "ellipsoid_incidence_angle" ([#804](https://github.com/Open-EO/openeo-python-client/issues/804))
 - Proactively refresh access/bearer token in `MultiBackendJobManager` before launching a job start thread ([#817](https://github.com/Open-EO/openeo-python-client/issues/817))
+- `Connection.list_services()`: Fix list access error for federation extension
 
 
 ## [0.45.0] - 2025-09-17

openeo/rest/connection.py

@@ -848,12 +848,12 @@ def list_services(self) -> list:
         :return: data_dict: Dict All available services
         """
         # TODO return parsed service objects
-        services = self.get('/services', expected_status=200).json()["services"]
-        federation_missing = federation_extension.get_federation_missing(data=services, resource_name="services")
+        response = self.get("/services", expected_status=200).json()
+        federation_missing = federation_extension.get_federation_missing(data=response, resource_name="services")
         federation = self.capabilities().ext_federation_backend_details()
         return VisualList(
             "data-table",
-            data=services,
+            data=response["services"],
             parameters={"columns": "services", "missing": federation_missing, "federation": federation},
         )