diff --git a/discovery/discovery.go b/discovery/discovery.go
new file mode 100644
index 0000000..56c488f
--- /dev/null
+++ b/discovery/discovery.go
@@ -0,0 +1,48 @@
+package discovery
+
+import (
+	"bytes"
+	"encoding/json"
+)
+
+type DiscoveryModeEnum int
+
+const (
+	DiscoveryModeEnumPrivileged DiscoveryModeEnum = iota + 1
+	DiscoveryModeEnumUnprivileged
+)
+
+var (
+	discoveryModeEnumID = map[DiscoveryModeEnum]string{
+		DiscoveryModeEnumPrivileged:   "Privileged",
+		DiscoveryModeEnumUnprivileged: "Unprivileged",
+	}
+
+	discoveryModeEnumName = map[string]DiscoveryModeEnum{
+		"Privileged":   DiscoveryModeEnumPrivileged,
+		"Unprivileged": DiscoveryModeEnumUnprivileged,
+	}
+)
+
+func (e DiscoveryModeEnum) String() string {
+	return discoveryModeEnumID[e]
+}
+
+func (e *DiscoveryModeEnum) MarshalJSON() ([]byte, error) {
+	buffer := bytes.NewBufferString(`"`)
+	buffer.WriteString(discoveryModeEnumID[*e])
+	buffer.WriteString(`"`)
+	return buffer.Bytes(), nil
+}
+
+func (e *DiscoveryModeEnum) UnmarshalJSON(b []byte) error {
+	// unmarshal as string
+	var s string
+	err := json.Unmarshal(b, &s)
+	if err != nil {
+		return err
+	}
+	// lookup value
+	*e = discoveryModeEnumName[s]
+	return nil
+}