diff --git a/README.md b/README.md
index f2cb3d72..04bb7e93 100644
--- a/README.md
+++ b/README.md
@@ -222,9 +222,9 @@ type GoCloak interface {
  SetRestyClient(restyClient *resty.Client)
 
  GetToken(ctx context.Context, realm string, options TokenOptions) (*JWT, error)
- GetRequestingPartyToken(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*JWT, error)
- GetRequestingPartyPermissions(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error)
- GetRequestingPartyPermissionDecision(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error)
+ GetRequestingPartyToken(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*JWT, error)
+ GetRequestingPartyPermissions(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error)
+ GetRequestingPartyPermissionDecision(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error)
 
  Login(ctx context.Context, clientID, clientSecret, realm, username, password string) (*JWT, error)
  LoginOtp(ctx context.Context, clientID, clientSecret, realm, username, password, totp string) (*JWT, error)
diff --git a/client.go b/client.go
index 71c0319f..b73c9322 100644
--- a/client.go
+++ b/client.go
@@ -84,8 +84,16 @@ func (client *gocloak) getRequestWithBasicAuth(ctx context.Context, clientID, cl
 	return req
 }
 
-func (client *gocloak) getRequestingParty(ctx context.Context, token string, realm string, options RequestingPartyTokenOptions, res interface{}) (*resty.Response, error) {
-	return client.getRequestWithBearerAuth(ctx, token).
+func (client *gocloak) getRequestingParty(ctx context.Context, token string, clientID string, clientSecret string, realm string, options RequestingPartyTokenOptions, res interface{}) (*resty.Response, error) {
+	var req *resty.Request
+
+	if !NilOrEmpty(&token) {
+		req = client.getRequestWithBearerAuth(ctx, token)
+	} else {
+		req = client.getRequestWithBasicAuth(ctx, clientID, clientSecret)
+	}
+
+	return req.
 		SetFormData(options.FormData()).
 		SetFormDataFromValues(url.Values{"permission": PStringSlice(options.Permissions)}).
 		SetResult(&res).
@@ -453,12 +461,12 @@ func (client *gocloak) GetToken(ctx context.Context, realm string, options Token
 }
 
 // GetRequestingPartyToken returns a requesting party token with permissions granted by the server
-func (client *gocloak) GetRequestingPartyToken(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*JWT, error) {
+func (client *gocloak) GetRequestingPartyToken(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*JWT, error) {
 	const errMessage = "could not get requesting party token"
 
 	var res JWT
 
-	resp, err := client.getRequestingParty(ctx, token, realm, options, &res)
+	resp, err := client.getRequestingParty(ctx, token, clientID, clientSecret, realm, options, &res)
 
 	if err := checkForError(resp, err, errMessage); err != nil {
 		return nil, err
@@ -468,14 +476,14 @@ func (client *gocloak) GetRequestingPartyToken(ctx context.Context, token, realm
 }
 
 // GetRequestingPartyPermissions returns a requesting party permissions granted by the server
-func (client *gocloak) GetRequestingPartyPermissions(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error) {
+func (client *gocloak) GetRequestingPartyPermissions(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error) {
 	const errMessage = "could not get requesting party token"
 
 	var res []RequestingPartyPermission
 
 	options.ResponseMode = StringP("permissions")
 
-	resp, err := client.getRequestingParty(ctx, token, realm, options, &res)
+	resp, err := client.getRequestingParty(ctx, token, clientID, clientSecret, realm, options, &res)
 
 	if err := checkForError(resp, err, errMessage); err != nil {
 		return nil, err
@@ -485,14 +493,14 @@ func (client *gocloak) GetRequestingPartyPermissions(ctx context.Context, token,
 }
 
 // GetRequestingPartyPermissionDecision returns a requesting party permission decision granted by the server
-func (client *gocloak) GetRequestingPartyPermissionDecision(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error) {
+func (client *gocloak) GetRequestingPartyPermissionDecision(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error) {
 	const errMessage = "could not get requesting party token"
 
 	var res RequestingPartyPermissionDecision
 
 	options.ResponseMode = StringP("decision")
 
-	resp, err := client.getRequestingParty(ctx, token, realm, options, &res)
+	resp, err := client.getRequestingParty(ctx, token, clientID, clientSecret, realm, options, &res)
 
 	if err := checkForError(resp, err, errMessage); err != nil {
 		return nil, err
diff --git a/client_test.go b/client_test.go
index a2222798..0b83e6de 100644
--- a/client_test.go
+++ b/client_test.go
@@ -675,6 +675,8 @@ func Test_RetrospectRequestingPartyToken(t *testing.T) {
 	rpt, err := client.GetRequestingPartyToken(
 		context.Background(),
 		token.AccessToken,
+		"",
+		"",
 		cfg.GoCloak.Realm,
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
@@ -688,6 +690,8 @@ func Test_RetrospectRequestingPartyToken(t *testing.T) {
 	rpt, err = client.GetRequestingPartyToken(
 		context.Background(),
 		token.AccessToken,
+		"",
+		"",
 		cfg.GoCloak.Realm,
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
@@ -732,6 +736,8 @@ func Test_GetRequestingPartyPermissions(t *testing.T) {
 		context.Background(),
 		token.AccessToken,
 		"",
+		"",
+		"",
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
 			Permissions: &[]string{
@@ -744,6 +750,8 @@ func Test_GetRequestingPartyPermissions(t *testing.T) {
 	rpp, err = client.GetRequestingPartyPermissions(
 		context.Background(),
 		token.AccessToken,
+		"",
+		"",
 		cfg.GoCloak.Realm,
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
@@ -760,6 +768,58 @@ func Test_GetRequestingPartyPermissions(t *testing.T) {
 	require.Equal(t, "Default Resource", *permissions[0].ResourceName, "GetRequestingPartyPermissions failed")
 }
 
+func Test_GetRequestingPartyPermissionsBasicAuth(t *testing.T) {
+	// t.Parallel()
+	cfg := GetConfig(t)
+	client := NewClientWithDebug(t)
+	SetUpTestUser(t, client)
+	token, err := client.Login(
+		context.Background(),
+		cfg.GoCloak.ClientID,
+		cfg.GoCloak.ClientSecret,
+		cfg.GoCloak.Realm,
+		cfg.GoCloak.UserName,
+		cfg.GoCloak.Password)
+	require.NoError(t, err, "login failed")
+
+	rpp, err := client.GetRequestingPartyPermissions(
+		context.Background(),
+		"",
+		cfg.GoCloak.ClientID,
+		cfg.GoCloak.ClientSecret,
+		"",
+		gocloak.RequestingPartyTokenOptions{
+			Audience:     gocloak.StringP(cfg.GoCloak.ClientID),
+			SubjectToken: gocloak.StringP(token.AccessToken),
+			Permissions: &[]string{
+				"Default Resource",
+			},
+		})
+	require.Error(t, err, "GetRequestingPartyPermissions failed")
+	require.Nil(t, rpp)
+
+	rpp, err = client.GetRequestingPartyPermissions(
+		context.Background(),
+		"",
+		cfg.GoCloak.ClientID,
+		cfg.GoCloak.ClientSecret,
+		cfg.GoCloak.Realm,
+		gocloak.RequestingPartyTokenOptions{
+			Audience:     gocloak.StringP(cfg.GoCloak.ClientID),
+			SubjectToken: gocloak.StringP(token.AccessToken),
+			Permissions: &[]string{
+				"Default Resource",
+			},
+		})
+	require.NoError(t, err, "GetRequestingPartyPermissions failed")
+	require.NotNil(t, rpp)
+
+	t.Log(rpp)
+	permissions := *rpp
+	require.Len(t, permissions, 1, "GetRequestingPartyPermissions failed")
+	require.Equal(t, "Default Resource", *permissions[0].ResourceName, "GetRequestingPartyPermissions failed")
+}
+
 func Test_GetRequestingPartyPermissionDecision(t *testing.T) {
 	// t.Parallel()
 	cfg := GetConfig(t)
@@ -778,6 +838,8 @@ func Test_GetRequestingPartyPermissionDecision(t *testing.T) {
 		context.Background(),
 		token.AccessToken,
 		"",
+		"",
+		"",
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
 		})
@@ -787,6 +849,8 @@ func Test_GetRequestingPartyPermissionDecision(t *testing.T) {
 	dec, err = client.GetRequestingPartyPermissionDecision(
 		context.Background(),
 		token.AccessToken,
+		"",
+		"",
 		cfg.GoCloak.Realm,
 		gocloak.RequestingPartyTokenOptions{
 			Audience: gocloak.StringP(cfg.GoCloak.ClientID),
@@ -1064,6 +1128,8 @@ func Test_GetRequestingPartyToken(t *testing.T) {
 	rpt, err := client.GetRequestingPartyToken(
 		context.Background(),
 		newToken.AccessToken,
+		"",
+		"",
 		cfg.GoCloak.Realm,
 		gocloak.RequestingPartyTokenOptions{
 			Audience: &cfg.GoCloak.ClientID,
diff --git a/gocloak.go b/gocloak.go
index d09bdf9f..cf328802 100644
--- a/gocloak.go
+++ b/gocloak.go
@@ -18,11 +18,11 @@ type GoCloak interface {
 	// GetToken returns a token
 	GetToken(ctx context.Context, realm string, options TokenOptions) (*JWT, error)
 	// GetRequestingPartyToken returns a requesting party token with permissions granted by the server
-	GetRequestingPartyToken(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*JWT, error)
+	GetRequestingPartyToken(ctx context.Context, token, clientID, cliientSecret, realm string, options RequestingPartyTokenOptions) (*JWT, error)
 	// GetRequestingPartyPermissions returns a permissions granted by the server to requesting party
-	GetRequestingPartyPermissions(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error)
+	GetRequestingPartyPermissions(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*[]RequestingPartyPermission, error)
 	// GetRequestingPartyPermissionDecision returns a permission decision granted by the server to requesting party
-	GetRequestingPartyPermissionDecision(ctx context.Context, token, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error)
+	GetRequestingPartyPermissionDecision(ctx context.Context, token, clientID, clientSecret, realm string, options RequestingPartyTokenOptions) (*RequestingPartyPermissionDecision, error)
 	// Login sends a request to the token endpoint using user and client credentials
 	Login(ctx context.Context, clientID, clientSecret, realm, username, password string) (*JWT, error)
 	// LoginOtp performs a login with user credentials and otp token