diff --git a/openstack/identity/extensions.go b/openstack/identity/extensions.go
new file mode 100644
index 0000000..4a861ff
--- /dev/null
+++ b/openstack/identity/extensions.go
@@ -0,0 +1,52 @@
+package identity
+
+import (
+	"fmt"
+	"github.com/mitchellh/mapstructure"
+)
+
+var (
+	ErrNotFound = fmt.Errorf("Identity extension not found")
+)
+
+type ExtensionDetails struct {
+	Name        string
+	Namespace   string
+	Updated     string
+	Description string
+}
+
+// ExtensionsDesc structures are returned by the Extensions() function for valid input.
+// This structure implements the ExtensionInquisitor interface.
+type ExtensionsDesc struct {
+	extensions []interface{}
+}
+
+func Extensions(m map[string]interface{}) *ExtensionsDesc {
+	return &ExtensionsDesc{extensions: m["extensions"].([]interface{})}
+}
+
+func extensionIndexByAlias(e *ExtensionsDesc, alias string) (int, error) {
+	for i, ee := range e.extensions {
+		extensionRecord := ee.(map[string]interface{})
+		if extensionRecord["alias"] == alias {
+			return i, nil
+		}
+	}
+	return 0, ErrNotFound
+}
+
+func (e *ExtensionsDesc) IsExtensionAvailable(alias string) bool {
+	_, err := extensionIndexByAlias(e, alias)
+	return err == nil
+}
+
+func (e *ExtensionsDesc) ExtensionDetailsByAlias(alias string) (*ExtensionDetails, error) {
+	i, err := extensionIndexByAlias(e, alias)
+	if err != nil {
+		return nil, err
+	}
+	ed := &ExtensionDetails{}
+	err = mapstructure.Decode(e.extensions[i], ed)
+	return ed, err
+}