diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac02b4da..d4b375c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,8 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Upgraded stac-fastapi and pgstac versions to bring support for CQL2-JSON filter support [#20](https://github.com/microsoft/planetary-computer-apis/pull/20)
 - Organized and updated documentation markdown docs [#11](https://github.com/microsoft/planetary-computer-apis/pull/11)
+- Allow SAS URL variable to be passed to PC SDK in tiler service [#33](https://github.com/microsoft/planetary-computer-apis/pull/33)
 
 ### Added
 - Errors are logged using exceptions and including request metadata [#14](https://github.com/microsoft/planetary-computer-apis/pull/14)
 ### Fixed
 - Updated search limit constraints to avoid 500s [#15](https://github.com/microsoft/planetary-computer-apis/pull/15)
+- Fixed STAC `describedby` and `preview` links [#33](https://github.com/microsoft/planetary-computer-apis/pull/33)
diff --git a/deployment/helm/deploy-values.template.yaml b/deployment/helm/deploy-values.template.yaml
index 6e22f82e..ac50ba70 100644
--- a/deployment/helm/deploy-values.template.yaml
+++ b/deployment/helm/deploy-values.template.yaml
@@ -49,6 +49,7 @@ tiler:
 
   stac_api_url: http://planetary-computer-stac.pc.svc.cluster.local
   stac_api_href: https://{{ tf.dns_label }}.westeurope.cloudapp.azure.com/stac/
+  pc_sdk_sas_url: https://{{ tf.dns_label }}.westeurope.cloudapp.azure.com/sas/
 
 metrics:
   instrumentationKey: "{{ tf.instrumentation_key }}"
diff --git a/deployment/helm/published/planetary-computer-tiler/templates/deployment.yaml b/deployment/helm/published/planetary-computer-tiler/templates/deployment.yaml
index bf6d003b..eabe1587 100644
--- a/deployment/helm/published/planetary-computer-tiler/templates/deployment.yaml
+++ b/deployment/helm/published/planetary-computer-tiler/templates/deployment.yaml
@@ -77,6 +77,8 @@ spec:
               value: "{{ .Values.tiler.stac_api_url}}"
             - name: STAC_API_HREF
               value: "{{ .Values.tiler.stac_api_href}}"
+            - name: PC_SDK_SAS_URL
+              value: "{{ .Values.tiler.pc_sdk_sas_url}}"
             - name: APP_INSIGHTS_INSTRUMENTATION_KEY
               value: "{{ .Values.metrics.instrumentationKey }}"
 
diff --git a/deployment/helm/published/planetary-computer-tiler/values.yaml b/deployment/helm/published/planetary-computer-tiler/values.yaml
index 7f3131ae..a61c7ff1 100644
--- a/deployment/helm/published/planetary-computer-tiler/values.yaml
+++ b/deployment/helm/published/planetary-computer-tiler/values.yaml
@@ -35,6 +35,7 @@ tiler:
 
   stac_api_url: ""
   stac_api_href: ""
+  pc_sdk_sas_url: ""
 
   host: "0.0.0.0"
   port: "80"
diff --git a/docker-compose.yml b/docker-compose.yml
index 43920943..2331c236 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -58,7 +58,7 @@ services:
       - FF_VRT="yes"
       - STAC_API_URL=http://stac:8081
       - STAC_API_HREF=http://localhost:8080/stac/
-      - PC_SDK_SAS_URL=https://planetarycomputer.microsoft.com/api/sas/v1/token
+      - PC_SDK_SAS_URL=https://planetarycomputer-staging.microsoft.com/api/sas/v1/token
 
       # titiler.pgstac
       - POSTGRES_USER=username
diff --git a/pcstac/pcstac/client.py b/pcstac/pcstac/client.py
index 34ec486a..60c0e0c2 100644
--- a/pcstac/pcstac/client.py
+++ b/pcstac/pcstac/client.py
@@ -54,7 +54,7 @@ def inject_collection_links(self, collection: Collection) -> Collection:
             {
                 "rel": "describedby",
                 "href": urljoin(
-                    "https://planetarycomputer.microsoft.com/dataset",
+                    "https://planetarycomputer.microsoft.com/dataset/",
                     collection["id"],
                 ),
                 "title": "Human readable dataset overview and reference",
@@ -113,14 +113,6 @@ async def get_collection(
         Returns:
             Collection.
         """
-        logger.info(
-            "Single collection requested",
-            extra={
-                "custom_dimensions": {
-                    "container": collection_id,
-                }
-            },
-        )
         try:
             render_config = COLLECTION_RENDER_CONFIG.get(collection_id)
 
diff --git a/pctiler/pctiler/endpoints/item.py b/pctiler/pctiler/endpoints/item.py
index edd4cb52..a6b382f3 100644
--- a/pctiler/pctiler/endpoints/item.py
+++ b/pctiler/pctiler/endpoints/item.py
@@ -54,7 +54,7 @@ def map(
     tilejson_params = get_param_str(
         {
             "collection": collection,
-            "items": item,
+            "item": item,
             "assets": ",".join(render_config.assets),
         }
     )