diff --git a/cmd/api/cmd_sdk.go b/cmd/api/cmd_sdk.go
index 5d3afe6..24011cf 100644
--- a/cmd/api/cmd_sdk.go
+++ b/cmd/api/cmd_sdk.go
@@ -131,8 +131,11 @@ func sdkSpecBuilder(title, description, version, termsURL, contactName, contactU
 }
 
 func sdkSpecGroups() []goapi.RouteGroup {
-	bridge := goapi.NewToolBridge("/tools")
-	return append(goapi.RegisteredSpecGroups(), bridge)
+	groups := make([]goapi.RouteGroup, 0)
+	for group := range sdkSpecGroupsIter() {
+		groups = append(groups, group)
+	}
+	return groups
 }
 
 func sdkSpecGroupsIter() iter.Seq[goapi.RouteGroup] {
diff --git a/cmd/api/cmd_test.go b/cmd/api/cmd_test.go
index 145894a..6429d7f 100644
--- a/cmd/api/cmd_test.go
+++ b/cmd/api/cmd_test.go
@@ -589,3 +589,22 @@ func TestAPISDKCmd_Good_TempSpecUsesMetadataFlags(t *testing.T) {
 		t.Fatalf("expected second server to be /, got %v", servers[1])
 	}
 }
+
+func TestAPISDKCmd_Good_SpecGroupsDeduplicateToolBridge(t *testing.T) {
+	snapshot := api.RegisteredSpecGroups()
+	api.ResetSpecGroups()
+	t.Cleanup(func() {
+		api.ResetSpecGroups()
+		api.RegisterSpecGroups(snapshot...)
+	})
+
+	api.RegisterSpecGroups(api.NewToolBridge("/tools"))
+
+	groups := sdkSpecGroups()
+	if len(groups) != 1 {
+		t.Fatalf("expected the built-in tools bridge to be deduplicated, got %d groups", len(groups))
+	}
+	if groups[0].BasePath() != "/tools" {
+		t.Fatalf("expected the remaining group to be /tools, got %s", groups[0].BasePath())
+	}
+}