diff --git a/lib/poisol/stub/request/query_builder.rb b/lib/poisol/stub/request/query_builder.rb
index c94042b..32dc3cb 100644
--- a/lib/poisol/stub/request/query_builder.rb
+++ b/lib/poisol/stub/request/query_builder.rb
@@ -1,7 +1,7 @@
-module Poisol 
+module Poisol
   module QueryBuilder
     def generate_query_methods
-      query = @stub_config.request.query 
+      query = @stub_config.request.query
       query.each do |field|
         field_name = field[0]
         define_method("for_#{field[0].underscore}") do |*value|
@@ -9,6 +9,16 @@ def generate_query_methods
           self
         end
       end
+
+      define_method('for_custom') do |params|
+        @request.query.merge!(params)
+        self
+      end
+
+      define_method('without') do |key|
+        @request.query.delete key.to_s
+        self
+      end
     end
   end
 end
diff --git a/spec/functional/query/query_explicit_spec.rb b/spec/functional/query/query_explicit_spec.rb
index 2ea7e18..1126ae9 100644
--- a/spec/functional/query/query_explicit_spec.rb
+++ b/spec/functional/query/query_explicit_spec.rb
@@ -18,4 +18,15 @@
     expect(response.body).to eq({"title"=>"independance", "category"=>{"age_group"=>"10", "genre"=>"action", "publisher"=>{"name"=>"summa", "place"=>"erode"}}}.to_json)
   end
 
+  it "add custom query params" do
+    Book.new.for_custom(color: 'red').for_author('bha').for_name('don').build()
+    response = RestClient.get "http://localhost:3030/book",{:params => {:author => 'bha',:name=> 'don',:color=>'red'}}
+    expect(response.body).to eq({"title"=>"independance", "category"=>{"age_group"=>"10", "genre"=>"action", "publisher"=>{"name"=>"summa", "place"=>"erode"}}}.to_json)
+  end
+
+  it "removes default query params" do
+    Book.new.without(:author).build()
+    response = RestClient.get "http://localhost:3030/book",{:params => {:name=> 'doni'}}
+    expect(response.body).to eq({"title"=>"independance", "category"=>{"age_group"=>"10", "genre"=>"action", "publisher"=>{"name"=>"summa", "place"=>"erode"}}}.to_json)
+  end
 end
diff --git a/spec/functional/query/query_implicit_spec.rb b/spec/functional/query/query_implicit_spec.rb
index fc68865..4f9bad4 100644
--- a/spec/functional/query/query_implicit_spec.rb
+++ b/spec/functional/query/query_implicit_spec.rb
@@ -17,7 +17,4 @@
     response = RestClient.get "http://localhost:3030/book",{:params => {:author=>'val',:name=>"doni"}}
     expect(response.body).to eq({"title"=>"independance", "category"=>{"age_group"=>"10", "genre"=>"action", "publisher"=>{"name"=>"summa", "place"=>"erode"}}}.to_json)
   end
-
-
 end
-