diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadCommand.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadCommand.java
new file mode 100644
index 0000000..83f3fc4
--- /dev/null
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadCommand.java
@@ -0,0 +1,33 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.extensions.config;
+
+import com.google.gerrit.extensions.annotations.ExtensionPoint;
+
+@ExtensionPoint
+public abstract class DownloadCommand {
+  /**
+   * Returns the download command for the given download scheme, project and
+   * ref.
+   *
+   * @param scheme the download scheme for which the command should be returned
+   * @param project the name of the project for which the download command
+   *        should be returned
+   * @param ref the change ref
+   * @return the download command
+   */
+  public abstract String getCommand(DownloadScheme scheme, String project,
+      String ref);
+}
diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java
new file mode 100644
index 0000000..1a9e754
--- /dev/null
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/config/DownloadScheme.java
@@ -0,0 +1,34 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.extensions.config;
+
+import com.google.gerrit.extensions.annotations.ExtensionPoint;
+
+@ExtensionPoint
+public abstract class DownloadScheme {
+  /**
+   * Returns the URL of this download scheme.
+   *
+   * @param project the name of the project for which the URL should be returned
+   * @return URL of the download scheme
+   */
+  public abstract String getUrl(String project);
+
+  /** @return whether this scheme requires authentication */
+  public abstract boolean isAuthRequired();
+
+  /** @return whether the download scheme is enabled */
+  public abstract boolean isEnabled();
+}
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/config/GerritGlobalModule.java b/gerrit-server/src/main/java/com/google/gerrit/server/config/GerritGlobalModule.java
index ca20868..6a90165 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/config/GerritGlobalModule.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/config/GerritGlobalModule.java
@@ -20,6 +20,8 @@
 import com.google.gerrit.audit.AuditModule;
 import com.google.gerrit.common.ChangeListener;
 import com.google.gerrit.extensions.config.CapabilityDefinition;
+import com.google.gerrit.extensions.config.DownloadCommand;
+import com.google.gerrit.extensions.config.DownloadScheme;
 import com.google.gerrit.extensions.events.GitReferenceUpdatedListener;
 import com.google.gerrit.extensions.events.LifecycleListener;
 import com.google.gerrit.extensions.events.NewProjectCreatedListener;
@@ -241,6 +243,8 @@
     DynamicItem.itemOf(binder(), AvatarProvider.class);
     DynamicSet.setOf(binder(), LifecycleListener.class);
     DynamicSet.setOf(binder(), TopMenu.class);
+    DynamicMap.mapOf(binder(), DownloadScheme.class);
+    DynamicMap.mapOf(binder(), DownloadCommand.class);
 
     bind(AnonymousUser.class);