From fc8c10476d5a43bd892cafb19b86d20642384c6c Mon Sep 17 00:00:00 2001
From: J <atomicjab@proton.me>
Date: Wed, 4 Mar 2026 04:37:47 -0700
Subject: [PATCH] internal/ethapi: add MaxUsedGas field to eth_simulateV1
 response (#32789)

closes #32741
---
 internal/ethapi/simulate.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/ethapi/simulate.go b/internal/ethapi/simulate.go
index 325ee6d5bb..63513f8d66 100644
--- a/internal/ethapi/simulate.go
+++ b/internal/ethapi/simulate.go
@@ -59,6 +59,7 @@ type simCallResult struct {
 	ReturnValue hexutil.Bytes  `json:"returnData"`
 	Logs        []*types.Log   `json:"logs"`
 	GasUsed     hexutil.Uint64 `json:"gasUsed"`
+	MaxUsedGas  hexutil.Uint64 `json:"maxUsedGas"`
 	Status      hexutil.Uint64 `json:"status"`
 	Error       *callError     `json:"error,omitempty"`
 }
@@ -323,7 +324,7 @@ func (sim *simulator) processBlock(ctx context.Context, block *simBlock, header,
 		sim.gasRemaining -= result.UsedGas
 
 		logs := tracer.Logs()
-		callRes := simCallResult{ReturnValue: result.Return(), Logs: logs, GasUsed: hexutil.Uint64(result.UsedGas)}
+		callRes := simCallResult{ReturnValue: result.Return(), Logs: logs, GasUsed: hexutil.Uint64(result.UsedGas), MaxUsedGas: hexutil.Uint64(result.MaxUsedGas)}
 		if result.Failed() {
 			callRes.Status = hexutil.Uint64(types.ReceiptStatusFailed)
 			if errors.Is(result.Err, vm.ErrExecutionReverted) {