diff --git a/checkers_test.go b/checkers_test.go
index 22dd451..8a659d2 100644
--- a/checkers_test.go
+++ b/checkers_test.go
@@ -33,6 +33,9 @@ func (s MockState) Get(eid string) (EntityState, error) {
 	}
 	return s.GetReturn, nil
 }
+func (s MockState) ListEntities() ([]EntityState, error) {
+	return []EntityState{}, nil
+}
 func (s MockState) Equals(eid, state string) (bool, error) {
 	if s.EqualsError {
 		return false, errors.New("some error")
diff --git a/internal/http/http.go b/internal/http/http.go
index 8d9c9f7..71c9eaf 100644
--- a/internal/http/http.go
+++ b/internal/http/http.go
@@ -40,6 +40,14 @@ func (c *HttpClient) GetState(entityId string) ([]byte, error) {
 	return resp, nil
 }
 
+func (c *HttpClient) States() ([]byte, error) {
+	resp, err := get(c.url+"/states", c.token)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
 func get(url, token string) ([]byte, error) {
 	req, err := http.NewRequest("GET", url, nil)
 	if err != nil {
diff --git a/state.go b/state.go
index 2f1e700..3d7430c 100644
--- a/state.go
+++ b/state.go
@@ -16,6 +16,7 @@ type State interface {
 	BeforeSunrise(...DurationString) bool
 	AfterSunset(...DurationString) bool
 	BeforeSunset(...DurationString) bool
+	ListEntities() ([]EntityState, error)
 	Get(entityId string) (EntityState, error)
 	Equals(entityId, state string) (bool, error)
 }
@@ -74,6 +75,18 @@ func (s *StateImpl) Get(entityId string) (EntityState, error) {
 	return es, err
 }
 
+// ListEntities returns a list of all entities in Home Assistant.
+// see rest documentation for more details: https://developers.home-assistant.io/docs/api/rest/#actions
+func (s *StateImpl) ListEntities() ([]EntityState, error) {
+	resp, err := s.httpClient.States()
+	if err != nil {
+		return nil, err
+	}
+	es := []EntityState{}
+	err = json.Unmarshal(resp, &es)
+	return es, err
+}
+
 func (s *StateImpl) Equals(entityId string, expectedState string) (bool, error) {
 	currentState, err := s.Get(entityId)
 	if err != nil {