.../config/optional/rest.resource.entity__node.yml |  1 +
 core/modules/rest/config/schema/rest.schema.yml    | 16 ++++++++++---
 core/modules/rest/rest.install                     |  4 +++-
 .../modules/rest/src/Entity/ConfigDependencies.php | 26 ++++++++++++++++++++++
 core/modules/rest/src/Tests/RESTTestBase.php       |  2 +-
 core/modules/rest/src/Tests/ResourceTest.php       |  4 ++--
 6 files changed, 46 insertions(+), 7 deletions(-)

diff --git a/core/modules/rest/config/optional/rest.resource.entity__node.yml b/core/modules/rest/config/optional/rest.resource.entity__node.yml
index 4561a2f..8125fa3 100644
--- a/core/modules/rest/config/optional/rest.resource.entity__node.yml
+++ b/core/modules/rest/config/optional/rest.resource.entity__node.yml
@@ -1,6 +1,7 @@
 id: entity__node
 plugin_id: 'entity:node'
 configuration:
+  granularity: method
   GET:
     supported_formats:
       - hal_json
diff --git a/core/modules/rest/config/schema/rest.schema.yml b/core/modules/rest/config/schema/rest.schema.yml
index 215f9b9..a7cf07d 100644
--- a/core/modules/rest/config/schema/rest.schema.yml
+++ b/core/modules/rest/config/schema/rest.schema.yml
@@ -7,8 +7,18 @@ rest.settings:
       type: string
       label: 'Domain of the relation'
 
-rest_resource:
-  type: mapping
+# The base type for REST resource configuration.
+rest_resource_base:
+   type: mapping
+   mapping:
+    granularity:
+      type: string
+      label: 'Resource configuration granularity'
+
+# Method-level granularity of REST resource configuration.
+# @todo Add resource-level granularity in https://www.drupal.org/node/2721595.
+rest_resource.method:
+  type: rest_resource_base
   mapping:
     GET:
       type: rest_request
@@ -50,5 +60,5 @@ rest.resource.*:
       type: string
       label: 'REST resource plugin id'
     configuration:
-      type: rest_resource
+      type: rest_resource.[granularity]
       label: 'REST resource configuration'
diff --git a/core/modules/rest/rest.install b/core/modules/rest/rest.install
index 4a153f9..e0597f9 100644
--- a/core/modules/rest/rest.install
+++ b/core/modules/rest/rest.install
@@ -26,13 +26,15 @@ function rest_requirements($phase) {
 
 /**
  * Install the REST config entity type and convert old settings-based config.
+ *
+ * @todo Automatically upgrade those REST resource config entities that have the same formats/auth mechanisms for all methods to "granular: resource" in https://www.drupal.org/node/2721595.
  */
 function rest_update_8100() {
   \Drupal::entityDefinitionUpdateManager()->installEntityType(\Drupal::entityTypeManager()->getDefinition('rest_resource_config'));
   foreach (\Drupal::config('rest.settings')->get('resources') as $key => $resource) {
     $resource = RestResourceConfig::create([
       'id' => str_replace(':', '__', $key),
-      'configuration' => $resource,
+      'configuration' => ['granularity' => 'method'] + $resource,
     ]);
     $resource->save();
   }
diff --git a/core/modules/rest/src/Entity/ConfigDependencies.php b/core/modules/rest/src/Entity/ConfigDependencies.php
index b277296..ee9a2e5 100644
--- a/core/modules/rest/src/Entity/ConfigDependencies.php
+++ b/core/modules/rest/src/Entity/ConfigDependencies.php
@@ -49,10 +49,36 @@ public function __construct(array $available_rest_formats, array $available_rest
    * @see \Drupal\Core\Config\Entity\ConfigEntityInterface::calculateDependencies()
    */
   public function calculateDependencies(RestResourceConfigInterface $rest_config) {
+    $granularity = $rest_config->get('configuration')['granularity'];
+    if ($granularity === 'method') {
+      return $this->calculateDependenciesForMethodGranularity($rest_config);
+    }
+    else {
+      // @todo Add resource-level granularity support in https://www.drupal.org/node/2721595.
+    }
+  }
+
+  /**
+   * Calculates dependencies of a specific rest resource configuration.
+   *
+   * @param \Drupal\rest\RestResourceConfigInterface $rest_config
+   *   The rest configuration.
+   *
+   * @return string[][]
+   *   Dependencies keyed by dependency type.
+   *
+   * @see \Drupal\Core\Config\Entity\ConfigEntityInterface::calculateDependencies()
+   */
+  protected function calculateDependenciesForMethodGranularity(RestResourceConfigInterface $rest_config) {
     // The dependency lists for authentication providers and formats
     // generated on container build.
     $dependencies = [];
     foreach (array_keys($rest_config->get('configuration')) as $request_method) {
+      // 'granularity' is not a request method
+      if ($request_method === 'granularity') {
+        continue;
+      }
+
       // Add dependencies based on the supported authentication providers.
       foreach ($rest_config->getSupportedAuthenticationProviders($request_method) as $auth) {
         if (isset($this->availableRestAuthentications[$auth])) {
diff --git a/core/modules/rest/src/Tests/RESTTestBase.php b/core/modules/rest/src/Tests/RESTTestBase.php
index 9306de2..8969a6a 100644
--- a/core/modules/rest/src/Tests/RESTTestBase.php
+++ b/core/modules/rest/src/Tests/RESTTestBase.php
@@ -272,7 +272,7 @@ protected function enableService($resource_type, $method = 'GET', $format = NULL
       // get entity by id
       /** @var \Drupal\rest\RestResourceConfigInterface $resource_config */
       $resource_config = $this->resourceConfigStorage->load($resource_config_id);
-      $resource_config = $resource_config ?: $this->resourceConfigStorage->create(['id' => $resource_config_id]);
+      $resource_config = $resource_config ?: $this->resourceConfigStorage->create(['id' => $resource_config_id, 'configuration' => ['granularity' => 'method']]);
 
       if (is_array($format)) {
         for ($i = 0; $i < count($format); $i++) {
diff --git a/core/modules/rest/src/Tests/ResourceTest.php b/core/modules/rest/src/Tests/ResourceTest.php
index a171d7f..1ab3970 100644
--- a/core/modules/rest/src/Tests/ResourceTest.php
+++ b/core/modules/rest/src/Tests/ResourceTest.php
@@ -45,7 +45,7 @@ protected function setUp() {
    */
   public function testFormats() {
     /** @var \Drupal\rest\RestResourceConfigInterface $resource_config */
-    $resource_config = $this->resourceConfigStorage->create(['id' => 'entity__entity_test']);
+    $resource_config = $this->resourceConfigStorage->create(['id' => 'entity__entity_test', 'configuration' => ['granularity' => 'method']]);
     // Attempt to enable the resource.
     $resource_config
       ->addSupportedAuthenticationProvider('GET', 'basic_auth')
@@ -68,7 +68,7 @@ public function testFormats() {
    */
   public function testAuthentication() {
     /** @var \Drupal\rest\RestResourceConfigInterface $resource_config */
-    $resource_config = $this->resourceConfigStorage->create(['id' => 'entity__entity_test']);
+    $resource_config = $this->resourceConfigStorage->create(['id' => 'entity__entity_test', 'configuration' => ['granularity' => 'method']]);
     // Attempt to enable the resource.
     $resource_config
       ->addSupportedFormat('GET', 'hal_json')