diff --git a/protobuf/flow/execution/execution.proto b/protobuf/flow/execution/execution.proto
index 675b101a0..90f984164 100644
--- a/protobuf/flow/execution/execution.proto
+++ b/protobuf/flow/execution/execution.proto
@@ -85,7 +85,8 @@ service ExecutionAPI {
       returns (BlockHeaderResponse);
 
   // GetTransactionExecutionMetricsAfter gets the transaction execution metrics
-  // for blocks after the given block height.
+  // for blocks after the given block height. The blocks will be sorted by
+  // descending block height.
   // If no data is available for the given block height, the response will be
   // empty. The execution node will only store metrics for a limited number of
   // blocks,  so the request may return an empty response if the requested
@@ -234,6 +235,7 @@ message BlockHeaderResponse {
 // The request for GetTransactionExecutionMetricsAfter
 message GetTransactionExecutionMetricsAfterRequest {
   // Block height after which to get transaction execution metrics.
+  // this block height will not be included in the response.
   uint64 block_height = 1;
 }
 
@@ -270,6 +272,7 @@ message GetTransactionExecutionMetricsAfterResponse {
     repeated Transaction transactions = 2;
   }
 
-  // a list of results for each block
+  // a list of results for each block sorted by block height in
+  // descending order
   repeated Result results = 1;
 }
diff --git a/protobuf/go/flow/execution/execution.pb.go b/protobuf/go/flow/execution/execution.pb.go
index 88acfd6fc..50e7200f1 100644
--- a/protobuf/go/flow/execution/execution.pb.go
+++ b/protobuf/go/flow/execution/execution.pb.go
@@ -1170,6 +1170,7 @@ func (m *BlockHeaderResponse) GetBlock() *entities.BlockHeader {
 // The request for GetTransactionExecutionMetricsAfter
 type GetTransactionExecutionMetricsAfterRequest struct {
 	// Block height after which to get transaction execution metrics.
+	// this block height will not be included in the response.
 	BlockHeight          uint64   `protobuf:"varint,1,opt,name=block_height,json=blockHeight,proto3" json:"block_height,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
@@ -1219,7 +1220,8 @@ func (m *GetTransactionExecutionMetricsAfterRequest) GetBlockHeight() uint64 {
 // blocks. Only finalized and executed blocks will be in the response.
 // The blocks are sorted by block height in descending order.
 type GetTransactionExecutionMetricsAfterResponse struct {
-	// a list of results for each block
+	// a list of results for each block sorted by block height in
+	// descending order
 	Results              []*GetTransactionExecutionMetricsAfterResponse_Result `protobuf:"bytes,1,rep,name=results,proto3" json:"results,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}                                              `json:"-"`
 	XXX_unrecognized     []byte                                                `json:"-"`
diff --git a/protobuf/go/flow/execution/execution_grpc.pb.go b/protobuf/go/flow/execution/execution_grpc.pb.go
index a3fc0109c..7cec5def6 100644
--- a/protobuf/go/flow/execution/execution_grpc.pb.go
+++ b/protobuf/go/flow/execution/execution_grpc.pb.go
@@ -73,7 +73,8 @@ type ExecutionAPIClient interface {
 	// GetBlockHeaderByID gets a block header by ID.
 	GetBlockHeaderByID(ctx context.Context, in *GetBlockHeaderByIDRequest, opts ...grpc.CallOption) (*BlockHeaderResponse, error)
 	// GetTransactionExecutionMetricsAfter gets the transaction execution metrics
-	// for blocks after the given block height.
+	// for blocks after the given block height. The blocks will be sorted by
+	// descending block height.
 	// If no data is available for the given block height, the response will be
 	// empty. The execution node will only store metrics for a limited number of
 	// blocks,  so the request may return an empty response if the requested
@@ -256,7 +257,8 @@ type ExecutionAPIServer interface {
 	// GetBlockHeaderByID gets a block header by ID.
 	GetBlockHeaderByID(context.Context, *GetBlockHeaderByIDRequest) (*BlockHeaderResponse, error)
 	// GetTransactionExecutionMetricsAfter gets the transaction execution metrics
-	// for blocks after the given block height.
+	// for blocks after the given block height. The blocks will be sorted by
+	// descending block height.
 	// If no data is available for the given block height, the response will be
 	// empty. The execution node will only store metrics for a limited number of
 	// blocks,  so the request may return an empty response if the requested