diff --git a/copernicus/processes/wps_perfmetrics.py b/copernicus/processes/wps_perfmetrics.py
index 1d07694..8e12ad6 100644
--- a/copernicus/processes/wps_perfmetrics.py
+++ b/copernicus/processes/wps_perfmetrics.py
@@ -69,13 +69,18 @@ def __init__(self):
             " As an additional reference, we consider the Righi et al. (2015) paper.",
             metadata=[
                 Metadata('ESMValTool', 'http://www.esmvaltool.org/'),
+                Metadata('Documentation',
+                         'https://copernicus-wps-demo.readthedocs.io/en/latest/processes.html#perfmetrics',
+                         role=util.WPS_ROLE_DOC),
+                Metadata('Media',
+                         util.diagdata_url() + '/perfmetrics/Portait.png',
+                         role=util.WPS_ROLE_MEDIA),
                 Metadata('Diagnostic Description',
-                         util.diagdata_url() + '/perfmetrics/perfmetrics.yml'),
-                Metadata('Description',
                          util.diagdata_url() + '/perfmetrics/description.md',
-                         role='http://www.opengis.net/spec/wps/2.0/def/process/description/documentation'),  # noqa
-                Metadata('Media',
-                         util.diagdata_url() + '/perfmetrics/Portait.png'),
+                         role=util.MAGIC_ROLE_DOC),
+                Metadata('Diagnostic Metadata',
+                         util.diagdata_url() + '/perfmetrics/perfmetrics.yml',
+                         role=util.MAGIC_ROLE_METADATA),
             ],
             inputs=inputs,
             outputs=outputs,
diff --git a/copernicus/processes/wps_rainfarm.py b/copernicus/processes/wps_rainfarm.py
index 8315415..f9f3f4f 100644
--- a/copernicus/processes/wps_rainfarm.py
+++ b/copernicus/processes/wps_rainfarm.py
@@ -69,12 +69,18 @@ def __init__(self):
             " precipitation fields from information simulated by climate models at regional scale.",
             metadata=[
                 Metadata('ESMValTool', 'http://www.esmvaltool.org/'),
+                Metadata('Documentation',
+                         'https://copernicus-wps-demo.readthedocs.io/en/latest/processes.html#rainfarm',
+                         role=util.WPS_ROLE_DOC),
+                Metadata('Media',
+                         util.diagdata_url() + '/rainfarm/rainfarm_thumbnail.png',
+                         role=util.WPS_ROLE_MEDIA),
                 Metadata('Diagnostic Description',
-                         util.diagdata_url() + '/rainfarm/rainfarm.yml'),
-                Metadata('Description',
                          util.diagdata_url() + '/rainfarm/description.md',
-                         role='http://www.opengis.net/spec/wps/2.0/def/process/description/documentation'),  # noqa
-                Metadata('Media', util.diagdata_url() + '/rainfarm/rainfarm_thumbnail.png'),
+                         role=util.MAGIC_ROLE_DOC),
+                Metadata('Diagnostic Metadata',
+                         util.diagdata_url() + '/rainfarm/rainfarm.yml',
+                         role=util.MAGIC_ROLE_METADATA),
             ],
             inputs=inputs,
             outputs=outputs,
diff --git a/copernicus/processes/wps_rmse.py b/copernicus/processes/wps_rmse.py
index bace851..2fbc5b7 100644
--- a/copernicus/processes/wps_rmse.py
+++ b/copernicus/processes/wps_rmse.py
@@ -66,17 +66,22 @@ def __init__(self):
             title="Modes of variability",
             version=runner.VERSION,
             abstract="Tool to compute the RMSE between the observed and modelled patterns of variability "
-                " obtained through classification and their relative relative bias (percentage) "
-                " in the frequency of occurrence and the persistence of each mode.",
+            " obtained through classification and their relative relative bias (percentage) "
+            " in the frequency of occurrence and the persistence of each mode.",
             metadata=[
                 Metadata('ESMValTool', 'http://www.esmvaltool.org/'),
+                Metadata('Documentation',
+                         'https://copernicus-wps-demo.readthedocs.io/en/latest/processes.html#rmse',
+                         role=util.WPS_ROLE_DOC),
+                Metadata('Media',
+                         util.diagdata_url() + '/modes_of_variability/era_interim_1990-01-2010-01_clusters.png',
+                         role=util.WPS_ROLE_MEDIA),
                 Metadata('Diagnostic Description',
-                         util.diagdata_url() + '/modes_of_variability/modes_of_variability.yml'),
-                Metadata('Description',
                          util.diagdata_url() + '/modes_of_variability/description.md',
-                         role='http://www.opengis.net/spec/wps/2.0/def/process/description/documentation'),  # noqa
-                Metadata('Media',
-                         util.diagdata_url() + '/modes_of_variability/era_interim_1990-01-2010-01_clusters.png'),
+                         role=util.MAGIC_ROLE_DOC),
+                Metadata('Diagnostic Metadata',
+                         util.diagdata_url() + '/modes_of_variability/modes_of_variability.yml',
+                         role=util.MAGIC_ROLE_METADATA),
             ],
             inputs=inputs,
             outputs=outputs,
diff --git a/copernicus/util.py b/copernicus/util.py
index 4d0458d..e6657ac 100644
--- a/copernicus/util.py
+++ b/copernicus/util.py
@@ -1,6 +1,16 @@
 import os
 
 
+# wps roles
+WPS_ROLE_BASE_URL = 'http://www.opengis.net/spec/wps/2.0/def/process/description'
+WPS_ROLE_DOC = WPS_ROLE_BASE_URL + '/documentation'
+WPS_ROLE_MEDIA = WPS_ROLE_BASE_URL + '/media'
+# magic roles
+MAGIC_ROLE_BASE_URL = 'http://c3s-magic.eu/spec/diagnostic/2.0'
+MAGIC_ROLE_DOC = MAGIC_ROLE_BASE_URL + '/documentation'
+MAGIC_ROLE_METADATA = MAGIC_ROLE_BASE_URL + '/metadata'
+
+
 def diagdata_file(filepath):
     return os.path.join(diagdata_directory(), filepath)
 
diff --git a/docs/source/processes.rst b/docs/source/processes.rst
index 839c36e..490a313 100644
--- a/docs/source/processes.rst
+++ b/docs/source/processes.rst
@@ -48,3 +48,17 @@ PyDemo
 .. autoprocess:: copernicus.processes.wps_pydemo.PyDemo
   :docstring:
   :skiplines: 1
+
+RainFarm
+--------
+
+.. autoprocess:: copernicus.processes.wps_rainfarm.RainFarm
+  :docstring:
+  :skiplines: 1
+
+RMSE
+----
+
+.. autoprocess:: copernicus.processes.wps_rmse.RMSE
+  :docstring:
+  :skiplines: 1
diff --git a/tests/test_wps_rainfarm.py b/tests/test_wps_rainfarm.py
new file mode 100644
index 0000000..2aa61d6
--- /dev/null
+++ b/tests/test_wps_rainfarm.py
@@ -0,0 +1,17 @@
+import pytest
+
+from pywps import Service
+from pywps.tests import assert_response_success
+
+from . common import client_for
+from copernicus.processes.wps_rainfarm import RainFarm
+
+
+def test_wps_rainfarm():
+    client = client_for(Service(processes=[RainFarm()]))
+    datainputs = "regridding=false;slope=false"
+    resp = client.get(
+        service='WPS', request='Execute', version='1.0.0', identifier='rainfarm',
+        datainputs=datainputs)
+    print(resp.data)
+    assert_response_success(resp)
diff --git a/tests/test_wps_rmse.py b/tests/test_wps_rmse.py
new file mode 100644
index 0000000..baa57db
--- /dev/null
+++ b/tests/test_wps_rmse.py
@@ -0,0 +1,17 @@
+import pytest
+
+from pywps import Service
+from pywps.tests import assert_response_success
+
+from . common import client_for
+from copernicus.processes.wps_rmse import RMSE
+
+
+def test_wps_rmse():
+    client = client_for(Service(processes=[RMSE()]))
+    datainputs = "eofs=false"
+    resp = client.get(
+        service='WPS', request='Execute', version='1.0.0', identifier='rmse',
+        datainputs=datainputs)
+    print(resp.data)
+    assert_response_success(resp)