diff --git a/CMakeLists.txt b/CMakeLists.txt
index a62be50..e4bdd9e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,6 +6,11 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
 file(GLOB SOURCES "*.h" "*.cpp" "*/*.h" "*/*.cpp")
-include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_SOURCE_DIR}/actors ${CMAKE_SOURCE_DIR}/controllers ${CMAKE_SOURCE_DIR}/entities ${CMAKE_SOURCE_DIR}/policies)
+include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_SOURCE_DIR}/actors
+                                        ${CMAKE_SOURCE_DIR}/controllers
+                                        ${CMAKE_SOURCE_DIR}/entities
+                                        ${CMAKE_SOURCE_DIR}/policies
+                                        ${CMAKE_SOURCE_DIR}/validators
+                                        ${CMAKE_SOURCE_DIR}/modificators)
 
 add_executable(slumber-quest ${SOURCES})
diff --git a/actors/actor.h b/actors/actor.h
index 99075ed..0625978 100644
--- a/actors/actor.h
+++ b/actors/actor.h
@@ -3,6 +3,7 @@
 
 #include <memory>
 #include <list>
+#include <set>
 
 class Location;
 class Item;
@@ -15,12 +16,15 @@ public:
 
     virtual void commitAction() = 0;
     virtual void moveToLocation(const std::shared_ptr<Location>& location) = 0;
+    virtual bool isLocationVisited(const std::shared_ptr<Location>& location) const = 0;
     virtual void giveItem(const std::shared_ptr<Item>& item) = 0;
     virtual void useItem(const std::shared_ptr<Item>& item) = 0;
+    virtual bool hasItem(const std::shared_ptr<Item>& item) const = 0;
 
 protected:
     std::shared_ptr<Location> _current_location;
     std::list<std::shared_ptr<Item>> _inventory;
+    std::set<std::shared_ptr<Location>> _visited_locations;
 };
 
 #endif // ACTOR_H
diff --git a/actors/player.cpp b/actors/player.cpp
index da18fec..75f0921 100644
--- a/actors/player.cpp
+++ b/actors/player.cpp
@@ -45,20 +45,29 @@ void Player::commitAction()
 void Player::moveToLocation(const std::shared_ptr<Location> &location)
 {
     _current_location = location;
+    _visited_locations.insert(location);
+}
+
+bool Player::isLocationVisited(const std::shared_ptr<Location> &location) const
+{
+    return std::find(_visited_locations.begin(), _visited_locations.end(), location) != _visited_locations.end();
 }
 
 void Player::giveItem(const std::shared_ptr<Item>& item)
 {
-    item->setReceived(true);
     _inventory.push_back(item);
 }
 
 void Player::useItem(const std::shared_ptr<Item>& item)
 {
-    item->setReceived(false);
     _inventory.remove(item);
 }
 
+bool Player::hasItem(const std::shared_ptr<Item>& item) const
+{
+    return std::find(_inventory.begin(), _inventory.end(), item) != _inventory.end();
+}
+
 std::string Player::showInventory() const
 {
     if (_inventory.empty())
diff --git a/actors/player.h b/actors/player.h
index 0006afe..42747e4 100644
--- a/actors/player.h
+++ b/actors/player.h
@@ -11,11 +11,13 @@ public:
 
     virtual void commitAction() override;
     virtual void moveToLocation(const std::shared_ptr<Location>& location) override;
+    virtual bool isLocationVisited(const std::shared_ptr<Location>& location) const override;
     virtual void giveItem(const std::shared_ptr<Item>& item) override;
     virtual void useItem(const std::shared_ptr<Item>& item) override;
+    virtual bool hasItem(const std::shared_ptr<Item>& item) const override;
 
 private:
-    std::string showInventory() const;
+    std::string showInventory() const;  
 };
 
 #endif // PLAYER_H
diff --git a/controllers/controller.cpp b/controllers/controller.cpp
index 42dd586..a226018 100644
--- a/controllers/controller.cpp
+++ b/controllers/controller.cpp
@@ -1,10 +1,12 @@
 #include "controller.h"
 #include "policy.h"
+#include "modificator.h"
 #include <algorithm>
 
 Controller::Controller(Initializer&& initializer) :
     _keywords(initializer.keywords),
-    _interaction_message(initializer.message)
+    _interaction_message(initializer.message),
+    _validator(nullptr)
 {}
 
 Controller::~Controller()
@@ -15,32 +17,18 @@ bool Controller::validateInput(const std::string &input_word) const
     return std::find(_keywords.begin(), _keywords.end(), input_word) != _keywords.end();
 }
 
-void Controller::setValidationPolicies(const std::list<std::shared_ptr<Policy>>& policies)
+void Controller::runModificators() const
 {
-    _validation_policies = policies;
+    for (const auto& modificator : _modificators)
+        modificator->run();
 }
 
-Controller::ValidationResult Controller::validatePolicies() const
+void Controller::setValidator(const std::shared_ptr<Validator>& validator)
 {
-    if (_validation_policies.empty())
-        return {true, ""};
-
-    std::string interaction_output;
-
-    bool success = true;
-    for (const auto& policy : _validation_policies)
-    {
-        const auto check_result = policy->check();
-        interaction_output += (check_result.commentary + "\n\n");
-        if (!check_result.satisfied)
-        {
-            success = false;
-            break;
-        }
-    }
-
-    interaction_output.pop_back();
-    interaction_output.pop_back();
-
-    return {success, interaction_output};
+    _validator = validator;
+}
+
+void Controller::setModificators(const std::list<std::shared_ptr<Modificator>>& modificators)
+{
+    _modificators = modificators;
 }
diff --git a/controllers/controller.h b/controllers/controller.h
index fa25edd..ea939bb 100644
--- a/controllers/controller.h
+++ b/controllers/controller.h
@@ -7,7 +7,8 @@
 
 class Node;
 class Actor;
-class Policy;
+class Validator;
+class Modificator;
 
 class Controller
 {
@@ -22,21 +23,18 @@ public:
     virtual ~Controller() = 0;
 
     virtual std::string interact(std::shared_ptr<Actor> actor) = 0;
-    virtual bool validateInput(const std::string& input_word) const final;
-    virtual void setValidationPolicies(const std::list<std::shared_ptr<Policy>>& policies) final;
+    bool validateInput(const std::string& input_word) const;
 
-    struct ValidationResult
-    {
-        bool success = false;
-        std::string validation_output;
-    };
+    void setValidator(const std::shared_ptr<Validator>& validator);
+    void setModificators(const std::list<std::shared_ptr<Modificator>>& modificators);
 
 protected:
-    virtual ValidationResult validatePolicies() const final;
+    void runModificators() const;
 
     std::list<std::string> _keywords;
     std::string _interaction_message;
-    std::list<std::shared_ptr<Policy>> _validation_policies;
+    std::shared_ptr<Validator> _validator;
+    std::list<std::shared_ptr<Modificator>> _modificators;
 };
 
 #endif // CONTROLLER_H
diff --git a/controllers/itemcontroller.cpp b/controllers/itemcontroller.cpp
index 2d9034a..f599f5a 100644
--- a/controllers/itemcontroller.cpp
+++ b/controllers/itemcontroller.cpp
@@ -1,7 +1,7 @@
 #include "itemcontroller.h"
 #include "item.h"
 #include "actor.h"
-#include "policy.h"
+#include "validator.h"
 
 ItemController::ItemController(Initializer &&initializer) :
     Controller(std::move(initializer))
@@ -14,13 +14,17 @@ std::string ItemController::interact(std::shared_ptr<Actor> actor)
 {
     std::string interaction_output;
 
-    const auto validation_result = validatePolicies();
-    interaction_output += validation_result.validation_output;
+    const auto validation_result = _validator
+                                 ? _validator->validate(actor)
+                                 : Validator::ValidateResult{true, ""};
+
+    interaction_output += validation_result.validate_output;
 
     if (validation_result.success)
     {
         actor->giveItem(_item);
         interaction_output += _interaction_message;
+        runModificators();
     }
 
     return interaction_output;
diff --git a/controllers/locationcontroller.cpp b/controllers/locationcontroller.cpp
index ceee1d0..6b64ee5 100644
--- a/controllers/locationcontroller.cpp
+++ b/controllers/locationcontroller.cpp
@@ -1,6 +1,6 @@
 #include "locationcontroller.h"
 #include "location.h"
-#include "policy.h"
+#include "validator.h"
 #include "actor.h"
 
 LocationController::LocationController(Initializer &&initializer) :
@@ -14,8 +14,11 @@ std::string LocationController::interact(std::shared_ptr<Actor> actor)
 {
     std::string interaction_output;
 
-    const auto validation_result = validatePolicies();
-    interaction_output += validation_result.validation_output;
+    const auto validation_result = _validator
+                                 ? _validator->validate(actor)
+                                 : Validator::ValidateResult{true, ""};
+
+    interaction_output += validation_result.validate_output;
 
     if (validation_result.success)
     {
@@ -25,6 +28,8 @@ std::string LocationController::interact(std::shared_ptr<Actor> actor)
         interaction_output += (_interaction_message + "\n\n" + node_interact_message);
     }
 
+    runModificators();
+
     return interaction_output;
 }
 
diff --git a/entities/location.cpp b/entities/location.cpp
index 573edb7..45834a8 100644
--- a/entities/location.cpp
+++ b/entities/location.cpp
@@ -3,13 +3,11 @@
 
 Location::Location(Initializer &&initializer) :
     _interaction_message(initializer.message),
-    _interactive_controllers(initializer.interactive_controllers),
-    _is_visited(false)
+    _interactive_controllers(initializer.interactive_controllers)
 {}
 
 const std::string& Location::interact()
 {
-    _is_visited = true;
     return _interaction_message;
 }
 
@@ -18,7 +16,22 @@ const std::list<std::shared_ptr<Controller>>& Location::controllers()
     return _interactive_controllers;
 }
 
-bool Location::isVisited() const
+void Location::removeControllers(const std::list<std::shared_ptr<Controller>> &controllers)
 {
-    return _is_visited;
+    for (const auto& to_remove_controller : controllers)
+    {
+        for (auto it = _interactive_controllers.begin(); it != _interactive_controllers.end(); ++it)
+        {
+            if ((*it) == to_remove_controller)
+            {
+                _interactive_controllers.erase(it);
+                break;
+            }
+        }
+    }
+}
+
+void Location::setInteractionMessage(const std::string& message)
+{
+    _interaction_message = message;
 }
diff --git a/entities/location.h b/entities/location.h
index e97f26f..d22b611 100644
--- a/entities/location.h
+++ b/entities/location.h
@@ -19,15 +19,14 @@ public:
     explicit Location(Initializer &&initializer);
 
     virtual const std::string& interact();
-
     const std::list<std::shared_ptr<Controller>>& controllers();
-    bool isVisited() const;
+    void removeControllers(const std::list<std::shared_ptr<Controller>>& controllers);
+    void setInteractionMessage(const std::string& message);
 
 private:
     std::string _interaction_message;
     std::list<std::shared_ptr<Controller>> _interactive_controllers;
     std::shared_ptr<Location> _current_user_location;
-    bool _is_visited;
 };
 
 #endif // LOCATION_H
diff --git a/modificators/modificator.cpp b/modificators/modificator.cpp
new file mode 100644
index 0000000..2ddabd8
--- /dev/null
+++ b/modificators/modificator.cpp
@@ -0,0 +1,7 @@
+#include "modificator.h"
+
+Modificator::Modificator()
+{}
+
+Modificator::~Modificator()
+{}
diff --git a/modificators/modificator.h b/modificators/modificator.h
new file mode 100644
index 0000000..e2bd27b
--- /dev/null
+++ b/modificators/modificator.h
@@ -0,0 +1,13 @@
+#ifndef MODIFICATOR_H
+#define MODIFICATOR_H
+
+class Modificator
+{
+public:
+    explicit Modificator();
+    virtual ~Modificator();
+
+    virtual void run() const = 0;
+};
+
+#endif // MODIFICATOR_H
diff --git a/modificators/removecontrollersmodificator.cpp b/modificators/removecontrollersmodificator.cpp
new file mode 100644
index 0000000..f9ec20d
--- /dev/null
+++ b/modificators/removecontrollersmodificator.cpp
@@ -0,0 +1,23 @@
+#include "removecontrollersmodificator.h"
+#include "location.h"
+
+RemoveControllersModificator::RemoveControllersModificator()
+{}
+
+RemoveControllersModificator::~RemoveControllersModificator()
+{}
+
+void RemoveControllersModificator::run() const
+{
+    _location->removeControllers(_controllers_to_remove);
+    _location->setInteractionMessage(_new_location_message);
+}
+
+void RemoveControllersModificator::setDependentObjects(const std::shared_ptr<Location>& location,
+                                                       const std::list<std::shared_ptr<Controller>>& controllers,
+                                                       const std::string& new_message)
+{
+    _location = location;
+    _controllers_to_remove = controllers;
+    _new_location_message = new_message;
+}
diff --git a/modificators/removecontrollersmodificator.h b/modificators/removecontrollersmodificator.h
new file mode 100644
index 0000000..08f6ecb
--- /dev/null
+++ b/modificators/removecontrollersmodificator.h
@@ -0,0 +1,31 @@
+#ifndef REMOVECONTROLLERSMODIFICATOR_H
+#define REMOVECONTROLLERSMODIFICATOR_H
+
+#include <string>
+#include <memory>
+#include <list>
+
+#include "modificator.h"
+
+class Location;
+class Controller;
+
+class RemoveControllersModificator : public Modificator
+{
+public:
+    explicit RemoveControllersModificator();
+    virtual ~RemoveControllersModificator() override;
+
+    virtual void run() const override;
+
+    void setDependentObjects(const std::shared_ptr<Location>& location,
+                             const std::list<std::shared_ptr<Controller>>& controllers,
+                             const std::string& new_message);
+
+private:
+    std::shared_ptr<Location> _location;
+    std::list<std::shared_ptr<Controller>> _controllers_to_remove;
+    std::string _new_location_message;
+};
+
+#endif // REMOVECONTROLLERSMODIFICATOR_H
diff --git a/policies/itemrequiredpolicy.cpp b/policies/itemrequiredpolicy.cpp
index 0e92e58..b5ee709 100644
--- a/policies/itemrequiredpolicy.cpp
+++ b/policies/itemrequiredpolicy.cpp
@@ -1,5 +1,6 @@
 #include "itemrequiredpolicy.h"
 #include "item.h"
+#include "actor.h"
 
 ItemRequiredPolicy::ItemRequiredPolicy(const std::string& satisfaction, const std::string& dissatisfaction) :
     Policy(satisfaction, dissatisfaction)
@@ -8,9 +9,9 @@ ItemRequiredPolicy::ItemRequiredPolicy(const std::string& satisfaction, const st
 ItemRequiredPolicy::~ItemRequiredPolicy()
 {}
 
-Policy::CheckResult ItemRequiredPolicy::check() const
+Policy::CheckResult ItemRequiredPolicy::check(const std::shared_ptr<Actor>& actor) const
 {
-    bool success = _item->isReceived();
+    bool success = actor->hasItem(_item);
     return composeMessageFromResult(success);
 }
 
diff --git a/policies/itemrequiredpolicy.h b/policies/itemrequiredpolicy.h
index 3db6a53..ee7874e 100644
--- a/policies/itemrequiredpolicy.h
+++ b/policies/itemrequiredpolicy.h
@@ -12,7 +12,7 @@ public:
     explicit ItemRequiredPolicy(const std::string& satisfaction, const std::string& dissatisfaction);
     virtual ~ItemRequiredPolicy() override;
 
-    virtual Policy::CheckResult check() const override;
+    virtual Policy::CheckResult check(const std::shared_ptr<Actor>& actor) const override;
 
     void setRequiredItem(const std::shared_ptr<Item>& item);
 
diff --git a/policies/locationrequiredpolicy.cpp b/policies/locationrequiredpolicy.cpp
index db30462..32c8c5e 100644
--- a/policies/locationrequiredpolicy.cpp
+++ b/policies/locationrequiredpolicy.cpp
@@ -1,5 +1,6 @@
 #include "locationrequiredpolicy.h"
 #include "location.h"
+#include "actor.h"
 
 LocationRequiredPolicy::LocationRequiredPolicy(const std::string& satisfaction, const std::string& dissatisfaction) :
     Policy(satisfaction, dissatisfaction)
@@ -8,9 +9,9 @@ LocationRequiredPolicy::LocationRequiredPolicy(const std::string& satisfaction,
 LocationRequiredPolicy::~LocationRequiredPolicy()
 {}
 
-Policy::CheckResult LocationRequiredPolicy::check() const
+Policy::CheckResult LocationRequiredPolicy::check(const std::shared_ptr<Actor>& actor) const
 {
-    bool success = _location->isVisited();
+    bool success = actor->isLocationVisited(_location);
     return composeMessageFromResult(success);
 }
 
diff --git a/policies/locationrequiredpolicy.h b/policies/locationrequiredpolicy.h
index 3950c56..c1f6cc7 100644
--- a/policies/locationrequiredpolicy.h
+++ b/policies/locationrequiredpolicy.h
@@ -12,7 +12,7 @@ public:
     explicit LocationRequiredPolicy(const std::string& satisfaction, const std::string& dissatisfaction);
     virtual ~LocationRequiredPolicy() override;
 
-    virtual Policy::CheckResult check() const override;
+    virtual Policy::CheckResult check(const std::shared_ptr<Actor>& actor) const override;
 
     void setRequiredLocation(const std::shared_ptr<Location>& location);
 
diff --git a/policies/policy.h b/policies/policy.h
index 8539149..77e6843 100644
--- a/policies/policy.h
+++ b/policies/policy.h
@@ -1,8 +1,11 @@
 #ifndef POLICY_H
 #define POLICY_H
 
+#include <memory>
 #include <string>
 
+class Actor;
+
 class Policy
 {
 public:
@@ -15,10 +18,10 @@ public:
         std::string commentary;
     };
 
-    virtual CheckResult check() const = 0;
+    virtual CheckResult check(const std::shared_ptr<Actor> &actor) const = 0;
 
 protected:
-    virtual CheckResult composeMessageFromResult(bool result) const final;
+    CheckResult composeMessageFromResult(bool result) const;
 
     std::string _commentary_on_satisfaction;
     std::string _commentary_on_dissatisfaction;
diff --git a/sandboxlevelbuilder.cpp b/sandboxlevelbuilder.cpp
index 7735ba9..0aae81d 100644
--- a/sandboxlevelbuilder.cpp
+++ b/sandboxlevelbuilder.cpp
@@ -4,6 +4,8 @@
 #include "locationcontroller.h"
 #include "itemcontroller.h"
 #include "itemrequiredpolicy.h"
+#include "allpoliciesvalidator.h"
+#include "removecontrollersmodificator.h"
 #include <iostream>
 
 SandboxLevelBuilder::SandboxLevelBuilder()
@@ -42,7 +44,8 @@ void SandboxLevelBuilder::init()
     Controller::Initializer pleroman_init = {{"pleroman"}, "You talk to a pleroma user! What a happy and carefree creature. He even brew you some cofe!"};
     std::shared_ptr<LocationController> pleroman_cont = std::make_shared<LocationController>(std::move(pleroman_init));
     std::shared_ptr<ItemRequiredPolicy> need_tenshi_policy = std::make_shared<ItemRequiredPolicy>("You give him the postcard of Tenshi.", "He doesn't want to talk to you. Make him trust you!!");
-    pleroman_cont->setValidationPolicies({need_tenshi_policy});
+    std::shared_ptr<AllPoliciesValidator> pleroman_validator = std::make_shared<AllPoliciesValidator>(std::list<std::shared_ptr<Policy>>{need_tenshi_policy});
+    pleroman_cont->setValidator(pleroman_validator);
 
     // START LOCATION
     auto&& init_msg = "You are now in a staring location. There is a door leading to a house. Typical text quest situation. To interact with something, type it as noun.";
@@ -72,6 +75,10 @@ void SandboxLevelBuilder::init()
     std::shared_ptr<Item> tenshi = std::make_shared<Item>("Postcard of Tenshi eating corndog");
     need_tenshi_policy->setRequiredItem(tenshi);
 
+    std::shared_ptr<RemoveControllersModificator> remove_tenshi_modif = std::make_shared<RemoveControllersModificator>();
+    remove_tenshi_modif->setDependentObjects(table, {tenshi_cont}, "Boring table.");
+    tenshi_cont->setModificators({remove_tenshi_modif});
+
     the_first_and_only_trigger->setDependentLocation(start);
     door_cont->setDependentLocation(room);
     table_cont->setDependentLocation(table);
diff --git a/validators/allpoliciesvalidator.cpp b/validators/allpoliciesvalidator.cpp
new file mode 100644
index 0000000..eb48c2d
--- /dev/null
+++ b/validators/allpoliciesvalidator.cpp
@@ -0,0 +1,29 @@
+#include "allpoliciesvalidator.h"
+#include "policy.h"
+
+AllPoliciesValidator::AllPoliciesValidator(const std::list<std::shared_ptr<Policy>>& policies) :
+    Validator(policies)
+{}
+
+AllPoliciesValidator::~AllPoliciesValidator()
+{}
+
+Validator::ValidateResult AllPoliciesValidator::validate(const std::shared_ptr<Actor> &actor) const
+{
+    Validator::ValidateResult validate_result{true, ""};
+
+    for (const auto& policy : _validation_policies)
+    {
+        const auto result = policy->check(actor);
+        validate_result.validate_output += result.commentary;
+        validate_result.validate_output += "\n\n";
+
+        if (!result.satisfied)
+        {
+            validate_result.success = false;
+            break;
+        }
+    }
+
+    return validate_result;
+}
diff --git a/validators/allpoliciesvalidator.h b/validators/allpoliciesvalidator.h
new file mode 100644
index 0000000..ea7f735
--- /dev/null
+++ b/validators/allpoliciesvalidator.h
@@ -0,0 +1,15 @@
+#ifndef ALLPOLICIESVALIDATOR_H
+#define ALLPOLICIESVALIDATOR_H
+
+#include "validator.h"
+
+class AllPoliciesValidator : public Validator
+{
+public:
+    explicit AllPoliciesValidator(const std::list<std::shared_ptr<Policy>>& policies);
+    virtual ~AllPoliciesValidator() override;
+
+    virtual ValidateResult validate(const std::shared_ptr<Actor>& actor) const override;
+};
+
+#endif // ALLPOLICIESVALIDATOR_H
diff --git a/validators/anypolicyvalidator.cpp b/validators/anypolicyvalidator.cpp
new file mode 100644
index 0000000..c0b20a5
--- /dev/null
+++ b/validators/anypolicyvalidator.cpp
@@ -0,0 +1,29 @@
+#include "anypolicyvalidator.h"
+#include "policy.h"
+
+AnyPolicyValidator::AnyPolicyValidator(const std::list<std::shared_ptr<Policy>>& policies) :
+    Validator(policies)
+{}
+
+AnyPolicyValidator::~AnyPolicyValidator()
+{}
+
+Validator::ValidateResult AnyPolicyValidator::validate(const std::shared_ptr<Actor> &actor) const
+{
+    Validator::ValidateResult validate_result{false, ""};
+
+    for (const auto& policy : _validation_policies)
+    {
+        const auto result = policy->check(actor);
+
+        if (result.satisfied)
+        {
+            validate_result.validate_output += result.commentary;
+            validate_result.validate_output += "\n\n";
+            validate_result.success = true;
+            break;
+        }
+    }
+
+    return validate_result;
+}
diff --git a/validators/anypolicyvalidator.h b/validators/anypolicyvalidator.h
new file mode 100644
index 0000000..5dba488
--- /dev/null
+++ b/validators/anypolicyvalidator.h
@@ -0,0 +1,15 @@
+#ifndef ANYPOLICYVALIDATOR_H
+#define ANYPOLICYVALIDATOR_H
+
+#include "validator.h"
+
+class AnyPolicyValidator : public Validator
+{
+public:
+    explicit AnyPolicyValidator(const std::list<std::shared_ptr<Policy>>& policies);
+    virtual ~AnyPolicyValidator() override;
+
+    virtual ValidateResult validate(const std::shared_ptr<Actor>& actor) const override;
+};
+
+#endif // ANYPOLICYVALIDATOR_H
diff --git a/validators/validator.cpp b/validators/validator.cpp
new file mode 100644
index 0000000..6ae70f0
--- /dev/null
+++ b/validators/validator.cpp
@@ -0,0 +1,8 @@
+#include "validator.h"
+
+Validator::Validator(const std::list<std::shared_ptr<Policy>>& policies) :
+    _validation_policies(policies)
+{}
+
+Validator::~Validator()
+{}
diff --git a/validators/validator.h b/validators/validator.h
new file mode 100644
index 0000000..41fd4f8
--- /dev/null
+++ b/validators/validator.h
@@ -0,0 +1,29 @@
+#ifndef VALIDATOR_H
+#define VALIDATOR_H
+
+#include <list>
+#include <memory>
+#include <string>
+
+class Policy;
+class Actor;
+
+class Validator
+{
+public:
+    explicit Validator(const std::list<std::shared_ptr<Policy>>& policies);
+    virtual ~Validator() = 0;
+
+    struct ValidateResult
+    {
+        bool success = false;
+        std::string validate_output;
+    };
+
+    virtual ValidateResult validate(const std::shared_ptr<Actor>& actor) const = 0;
+
+protected:
+    std::list<std::shared_ptr<Policy>> _validation_policies;
+};
+
+#endif // VALIDATOR_H