diff --git a/src/osha/oira/configure.zcml b/src/osha/oira/configure.zcml
index 6597ee08..5b55a357 100644
--- a/src/osha/oira/configure.zcml
+++ b/src/osha/oira/configure.zcml
@@ -36,6 +36,7 @@
   <include package=".ploneintranet" />
   <include package=".upgrade" />
   <include package=".statistics" />
+  <include package=".services" />
 
   <!-- Vocabularies -->
   <utility
diff --git a/src/osha/oira/services/__init__.py b/src/osha/oira/services/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/src/osha/oira/services/configure.zcml b/src/osha/oira/services/configure.zcml
new file mode 100644
index 00000000..d2d5b242
--- /dev/null
+++ b/src/osha/oira/services/configure.zcml
@@ -0,0 +1,15 @@
+<configure
+    xmlns="http://namespaces.zope.org/zope"
+    xmlns:plone="http://namespaces.plone.org/plone"
+    >
+
+  <plone:service
+      method="GET"
+      factory=".surveys.ToolVersionsGet"
+      for="plone.dexterity.interfaces.IDexterityContainer"
+      permission="zope2.View"
+      layer="osha.oira.interfaces.IOSHAContentSkinLayer"
+      name="@tool-versions"
+      />
+
+</configure>
diff --git a/src/osha/oira/services/surveys.py b/src/osha/oira/services/surveys.py
new file mode 100644
index 00000000..f0297e2a
--- /dev/null
+++ b/src/osha/oira/services/surveys.py
@@ -0,0 +1,83 @@
+from Acquisition import aq_chain
+from Acquisition import aq_inner
+from plone import api
+from plone.restapi.serializer.converters import json_compatible
+from plone.restapi.services import Service
+
+
+class ToolVersionsGet(Service):
+    """Get info from the containing tool and its versions.
+
+    From the Quaive side we request this.
+    Then we know if we are on a path that is within a survey group,
+    and we can show info about the versions, if we want.
+
+    This is meant to show information about versions like on the left
+    in the prototype:
+    https://proto.quaivecloud.com/tools/audio-visual-productions/edit
+
+    We need this information in the sidebar.
+    And we don't yet have a way of knowing what the "remote" portal_type
+    is of the path we are viewing in Quaive, so we don't know if we are
+    currently viewing a country or survey group or survey or risk.
+    So from the Quaive side we have no idea if we should show this version
+    information.  An extra REST API service then seems a good way to me.
+    """
+
+    def get_survey_info(self, survey):
+        return {
+            "@id": survey.absolute_url(),
+            "id": survey.id,
+            "title": survey.Title(),
+            "review_state": api.content.get_state(obj=survey),
+            "created": json_compatible(survey.created()),
+            "modified": json_compatible(survey.modified()),
+            "published": json_compatible(survey.published),
+        }
+
+    def reply(self):
+        obj = aq_inner(self.context)
+        # First gather basic info about the context and request.
+        result = {
+            "@id": f"{obj.absolute_url()}/@tool-versions",
+            # "id": obj.id,
+            "@type": obj.portal_type,
+        }
+        survey = None
+        surveygroup = None
+        # Find nearest survey and survey group.
+        # One of these might be the current object as well.
+        for parent in aq_chain(obj):
+            portal_type = getattr(parent, "portal_type", "")
+            if not portal_type:
+                break
+            if portal_type == "euphorie.survey":
+                survey = parent
+            elif portal_type == "euphorie.surveygroup":
+                surveygroup = parent
+
+        if not surveygroup:
+            # We are outside of a survey group, nothing to see here.
+            return result
+
+        result["surveygroup"] = {
+            "@id": surveygroup.absolute_url(),
+            "title": surveygroup.Title(),
+        }
+        if survey:
+            current_survey_id = survey.id
+            result["survey"] = self.get_survey_info(survey)
+        else:
+            current_survey_id = None
+        items = []
+        # TODO Can we know which survey is the main currently published one?
+        # When publishing a survey you get this question: "Are you sure you want
+        # to publish this OiRA Tool version? This will replace the current version."
+        # But afterwards both the old and new version have review_state 'published'.
+        for survey in surveygroup.contentValues():
+            if survey.id == current_survey_id:
+                # This is the survey on which path we are.
+                continue
+            items.append(self.get_survey_info(survey))
+        result["items"] = items
+        return result