diff --git a/docs/source/plugins.rst b/docs/source/plugins.rst
index b4cc845..4fb9fa1 100644
--- a/docs/source/plugins.rst
+++ b/docs/source/plugins.rst
@@ -254,6 +254,7 @@ by downstream applications.
    `local-outlier-factor-plugin`_,Manaaki Whenua – Landcare Research,processes for local outlier detection
    `ogc-edc`_,Euro Data Cube,coverage provider atop the EDC API
    `nldi_xstool`_,United States Geological Survey,Water data processing
+   `pygeometa-plugin`_,pygeometa project,pygeometa as a service
 
 
 .. _`Cookiecutter`: https://github.com/audreyr/cookiecutter-pypackage
@@ -263,3 +264,4 @@ by downstream applications.
 .. _`ogc-edc`: https://github.com/eurodatacube/ogc-edc/tree/oapi/edc_ogc/pygeoapi
 .. _`nldi_xstool`: https://github.com/ACWI-SSWD/nldi_xstool
 .. _`pygeoapi-plugin-cookiecutter`: https://code.usgs.gov/wma/nhgf/pygeoapi-plugin-cookiecutter
+.. _`pygeometa-plugin`: https://geopython.github.io/pygeometa/pygeoapi-plugin
diff --git a/pygeoapi/api.py b/pygeoapi/api.py
index 103cac2..00f1160 100644
--- a/pygeoapi/api.py
+++ b/pygeoapi/api.py
@@ -1271,6 +1271,8 @@ class API:
 
             return headers, 200, content
 
+        headers['Content-Type'] = 'application/schema+json'
+
         return headers, 200, to_json(queryables, self.pretty_print)
 
     @gzip
diff --git a/pygeoapi/django_/views.py b/pygeoapi/django_/views.py
index ac07cc0..2540878 100644
--- a/pygeoapi/django_/views.py
+++ b/pygeoapi/django_/views.py
@@ -140,9 +140,13 @@ def collection_items(request: HttpRequest, collection_id: str) -> HttpResponse:
             collection_id,
         )
     elif request.method == 'POST':
-        response_ = _feed_response(
-            request, 'manage_collection_item', request, 'create', collection_id
-        )
+        if request.content_type is not None:
+            if request.content_type == 'application/geo+json':
+                response_ = _feed_response(request, 'manage_collection_item',
+                                           request, 'create', collection_id)
+            else:
+                response_ = _feed_response(request, 'post_collection_items',
+                                           request, collection_id)
 
     response = _to_django_response(*response_)
 
diff --git a/pygeoapi/flask_app.py b/pygeoapi/flask_app.py
index 0dbcd66..1a9457f 100644
--- a/pygeoapi/flask_app.py
+++ b/pygeoapi/flask_app.py
@@ -195,12 +195,13 @@ def collection_items(collection_id, item_id=None):
                 api_.get_collection_items(request, collection_id))
         elif request.method == 'POST':  # filter or manage items
             if request.content_type is not None:
-                return get_response(
-                    api_.manage_collection_item(request, 'create',
-                                                collection_id))
-            else:
-                return get_response(
-                    api_.post_collection_items(request, collection_id))
+                if request.content_type == 'application/geo+json':
+                    return get_response(
+                        api_.manage_collection_item(request, 'create',
+                                                    collection_id))
+                else:
+                    return get_response(
+                        api_.post_collection_items(request, collection_id))
 
     elif request.method == 'DELETE':
         return get_response(
diff --git a/pygeoapi/starlette_app.py b/pygeoapi/starlette_app.py
index c287b2f..307d7d5 100644
--- a/pygeoapi/starlette_app.py
+++ b/pygeoapi/starlette_app.py
@@ -233,13 +233,15 @@ async def collection_items(request: Request, collection_id=None, item_id=None):
                 api_.get_collection_items(
                     request, collection_id))
         elif request.method == 'POST':  # filter or manage items
-            if request.headers.get('content-type') is not None:
-                return get_response(
-                    api_.manage_collection_item(request, 'create',
-                                                collection_id))
-            else:
-                return get_response(
-                    api_.post_collection_items(request, collection_id))
+            content_type = request.headers.get('content-type')
+            if content_type is not None:
+                if content_type == 'application/geo+json':
+                    return get_response(
+                        api_.manage_collection_item(request, 'create',
+                                                    collection_id))
+                else:
+                    return get_response(
+                        api_.post_collection_items(request, collection_id))
 
     elif request.method == 'DELETE':
         return get_response(
diff --git a/tests/test_api.py b/tests/test_api.py
index 2ade9ab..ea2ae3c 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -536,6 +536,7 @@ def test_get_collection_queryables(config, api_):
 
     req = mock_request({'f': 'json'})
     rsp_headers, code, response = api_.get_collection_queryables(req, 'obs')
+    assert rsp_headers['Content-Type'] == 'application/schema+json'
     queryables = json.loads(response)
 
     assert 'properties' in queryables