diff --git a/lib/noosfero/api/v1/articles.rb b/lib/noosfero/api/v1/articles.rb
index 842f39b..9c294e1 100644
--- a/lib/noosfero/api/v1/articles.rb
+++ b/lib/noosfero/api/v1/articles.rb
@@ -28,7 +28,16 @@ module Noosfero
             article = find_article(environment.articles, params[:id])
             present article, :with => Entities::Article
           end
-  
+
+          post ':id/vote' do
+            value = (params[:value] || 1).to_i
+            # FIXME verify allowed values
+            render_api_error!('Vote value not allowed', 400) unless [-1, 1].include?(value)
+            article = find_article(environment.articles, params[:id])
+            Vote.create!(:voteable => article, :voter => current_person, :vote => value)
+            {:vote => true}
+          end
+
           get ':id/children' do
             article = find_article(environment.articles, params[:id])
             articles = select_filtered_collection_of(article, 'children', params)
diff --git a/test/unit/api/articles_test.rb b/test/unit/api/articles_test.rb
index 6d57c79..bdf0d0a 100644
--- a/test/unit/api/articles_test.rb
+++ b/test/unit/api/articles_test.rb
@@ -442,5 +442,38 @@ class ArticlesTest < ActiveSupport::TestCase
     assert_equal user.person, Article.last.last_changed_by
   end
 
+  should 'vote for an article' do
+    article = fast_create(Article, :profile_id => user.person.id, :name => "Some thing")
+    params[:value] = 1
+    post "/api/v1/articles/#{article.id}/vote?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert json["vote"]
+    assert_equal 1, Vote.where(:voteable_id => article.id).sum(:vote)
+  end
+
+  should 'vote for an article with default value' do
+    article = fast_create(Article, :profile_id => user.person.id, :name => "Some thing")
+    post "/api/v1/articles/#{article.id}/vote?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert json["vote"]
+    assert_equal 1, Vote.where(:voteable_id => article.id).sum(:vote)
+  end
+
+  should 'vote against an article' do
+    article = fast_create(Article, :profile_id => user.person.id, :name => "Some thing")
+    params[:value] = -1
+    post "/api/v1/articles/#{article.id}/vote?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert json["vote"]
+    assert_equal -1, Vote.where(:voteable_id => article.id).sum(:vote)
+  end
+
+  should 'do not allow forbidden vote value' do
+    article = fast_create(Article, :profile_id => user.person.id, :name => "Some thing")
+    params[:value] = 100
+    post "/api/v1/articles/#{article.id}/vote?#{params.to_query}"
+    json = JSON.parse(last_response.body)
+    assert_equal 400, last_response.status
+  end
 
 end
--
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