diff --git a/api/v1/swagger/definitions/vendor.yaml b/api/v1/swagger/definitions/vendor.yaml
index 3bf8a17977..262db4fb10 100644
--- a/api/v1/swagger/definitions/vendor.yaml
+++ b/api/v1/swagger/definitions/vendor.yaml
@@ -119,6 +119,11 @@ properties:
     description: List of aliases
     items:
       $ref: "vendor_alias.yaml"
+  subscriptions_count:
+    type:
+      - integer
+      - "null"
+    description: Number of linked subscriptions
 additionalProperties: false
 required:
   - name
diff --git a/api/v1/swagger/paths/acquisitions_vendors.yaml b/api/v1/swagger/paths/acquisitions_vendors.yaml
index ed817cc2a1..991419e541 100644
--- a/api/v1/swagger/paths/acquisitions_vendors.yaml
+++ b/api/v1/swagger/paths/acquisitions_vendors.yaml
@@ -35,6 +35,7 @@
           type: string
           enum:
             - aliases
+            - subscriptions+count
         collectionFormat: csv
     responses:
       "200":
diff --git a/t/db_dependent/api/v1/acquisitions_vendors.t b/t/db_dependent/api/v1/acquisitions_vendors.t
index f9520d886e..9fd1e6d9dc 100755
--- a/t/db_dependent/api/v1/acquisitions_vendors.t
+++ b/t/db_dependent/api/v1/acquisitions_vendors.t
@@ -36,7 +36,7 @@ my $t = Test::Mojo->new('Koha::REST::V1');
 
 subtest 'list() and delete() tests | authorized user' => sub {
 
-    plan tests => 40;
+    plan tests => 44;
 
     $schema->storage->txn_begin;
 
@@ -100,6 +100,13 @@ subtest 'list() and delete() tests | authorized user' => sub {
       ->json_is('/0/aliases/0/alias' => 'alias 1', 'alias 1 is embeded')
       ->json_is('/0/aliases/1/alias' => 'alias 2', 'alias 2 is embeded');
 
+    for ( 0 .. 1 ) {
+        $builder->build_object( { class => 'Koha::Subscriptions', value => { aqbooksellerid => $vendor->id } } );
+    }
+    $t->get_ok( "//$userid:$password@/api/v1/acquisitions/vendors" => { 'x-koha-embed' => 'subscriptions+count' } )
+        ->status_is(200)->json_has( '/0/subscriptions_count', 'subscriptions_count is embeded' )
+        ->json_is( '/0/subscriptions_count' => '2', 'subscription count is 2' );
+
     $t->delete_ok( "//$userid:$password@/api/v1/acquisitions/vendors/" . $vendor->id )
       ->status_is(204, 'SWAGGER3.2.4')
       ->content_is('', 'SWAGGER3.3.4');