diff --git a/exp/lighthorizon/services/main.go b/exp/lighthorizon/services/main.go
index fa8160f69a..f7dd3a4e01 100644
--- a/exp/lighthorizon/services/main.go
+++ b/exp/lighthorizon/services/main.go
@@ -15,11 +15,23 @@ import (
 )
 
 type LightHorizon struct {
-	Archive    archive.Archive
+	AccountService,
+	TransactionService,
+	Archive archive.Archive
 	Passphrase string
 	IndexStore index.Store
 }
 
+type AccountService interface {
+	GetOperationsByAccount(ctx context.Context, cursor int64, limit int64, accountId string) ([]common.Operation, error)
+	GetOperations(ctx context.Context, cursor int64, limit int64) ([]common.Operation, error)
+}
+
+type TransactionService interface {
+	GetTransactionsByAccount(ctx context.Context, cursor int64, limit int64, accountId string) ([]common.Transaction, error)
+	GetTransactions(ctx context.Context, cursor int64, limit int64) ([]common.Transaction, error)
+}
+
 func (lh *LightHorizon) GetOperationsByAccount(ctx context.Context, cursor int64, limit int64, accountId string) ([]common.Operation, error) {
 	ops := []common.Operation{}
 	// Skip the cursor ahead to the next active checkpoint for this account