diff --git a/internal/api/handlers/management/plugin_quota_test.go b/internal/api/handlers/management/plugin_quota_test.go
index 43f62a632..24280a663 100644
--- a/internal/api/handlers/management/plugin_quota_test.go
+++ b/internal/api/handlers/management/plugin_quota_test.go
@@ -45,6 +45,9 @@ func (m *mockQuotaProvider) FetchQuota(ctx context.Context, req pluginapi.QuotaF
 			TierID:   "pro-tier",
 		},
 		ServerTimeOffsetMs: 42,
+		Summary: []pluginapi.QuotaMetric{
+			{Key: "credits_used", Label: "Credits used", Value: 1740.28, Unit: "credits"},
+		},
 		Groups: []pluginapi.QuotaGroup{
 			{
 				DisplayName: "Standard Limits",
@@ -181,6 +184,9 @@ func TestFetchCredentialQuota_Endpoint(t *testing.T) {
 	if quotaResp.Subscription == nil || quotaResp.Subscription.Plan != "Pro" {
 		t.Fatalf("unexpected subscription: %+v", quotaResp.Subscription)
 	}
+	if len(quotaResp.Summary) != 1 || quotaResp.Summary[0].Key != "credits_used" || quotaResp.Summary[0].Value != 1740.28 {
+		t.Fatalf("unexpected quota summary: %+v", quotaResp.Summary)
+	}
 	if len(quotaResp.Groups) != 1 || len(quotaResp.Groups[0].Buckets) != 1 {
 		t.Fatalf("unexpected quota groups: %+v", quotaResp.Groups)
 	}
diff --git a/sdk/pluginapi/types.go b/sdk/pluginapi/types.go
index 55bb3b733..4813a7bfb 100644
--- a/sdk/pluginapi/types.go
+++ b/sdk/pluginapi/types.go
@@ -1601,9 +1601,21 @@ func (b *QuotaBucket) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+// QuotaMetric is a provider-defined, bounded numeric account summary for management UI rendering.
+// Format is "number" or "currency"; Currency is an ISO 4217 code when Format is "currency".
+type QuotaMetric struct {
+	Key      string  `json:"key"`
+	Label    string  `json:"label"`
+	Value    float64 `json:"value"`
+	Unit     string  `json:"unit,omitempty"`
+	Format   string  `json:"format,omitempty"`
+	Currency string  `json:"currency,omitempty"`
+}
+
 // QuotaFetchResponse carries normalized quota information for management UI rendering.
 type QuotaFetchResponse struct {
 	Subscription       *QuotaSubscription `json:"subscription,omitempty"`
+	Summary            []QuotaMetric      `json:"summary,omitempty"`
 	ServerTimeOffsetMs int64              `json:"serverTimeOffsetMs,omitempty"`
 	Groups             []QuotaGroup       `json:"groups,omitempty"`
 }
diff --git a/sdk/pluginapi/types_test.go b/sdk/pluginapi/types_test.go
index 49c3dbab2..ac35abc63 100644
--- a/sdk/pluginapi/types_test.go
+++ b/sdk/pluginapi/types_test.go
@@ -662,6 +662,10 @@ func TestQuotaPayloadJSON(t *testing.T) {
 	// Test camelCase input
 	camelJSON := []byte(`{
 		"subscription": {"plan":"Pro","tierName":"Tier 1","tierId":"t-1"},
+		"summary": [
+			{"key":"credits_used","label":"Credits used","value":1740.28,"unit":"credits","format":"number"},
+			{"key":"charged","label":"Charged","value":29.61,"format":"currency","currency":"USD"}
+		],
 		"serverTimeOffsetMs": 100,
 		"groups": [
 			{
@@ -680,6 +684,9 @@ func TestQuotaPayloadJSON(t *testing.T) {
 	if respCamel.Subscription == nil || respCamel.Subscription.TierName != "Tier 1" || respCamel.Subscription.TierID != "t-1" {
 		t.Fatalf("unexpected camel subscription: %+v", respCamel.Subscription)
 	}
+	if len(respCamel.Summary) != 2 || respCamel.Summary[0].Key != "credits_used" || respCamel.Summary[0].Value != 1740.28 || respCamel.Summary[1].Currency != "USD" {
+		t.Fatalf("unexpected camel summary: %+v", respCamel.Summary)
+	}
 	if respCamel.ServerTimeOffsetMs != 100 {
 		t.Fatalf("unexpected server time offset: %d", respCamel.ServerTimeOffsetMs)
 	}