diff --git a/api/starknet_trace_api_openrpc.json b/api/starknet_trace_api_openrpc.json
index ec54cef..54fec69 100644
--- a/api/starknet_trace_api_openrpc.json
+++ b/api/starknet_trace_api_openrpc.json
@@ -39,7 +39,7 @@
         },
         {
             "name": "starknet_simulateTransactions",
-            "summary": "simulate a given sequence of transactions on the requested state, and generate the execution traces",
+            "summary": "simulate a given sequence of transactions on the requested state, and generate the execution traces. If one of the transactions is reverted, raises CONTRACT_ERROR.",
             "params": [
                 {
                     "name": "block_id",
@@ -230,9 +230,9 @@
                 "type": "string",
                 "enum": [
                     "SKIP_VALIDATE",
-                    "SKIP_EXECUTE"
+                    "SKIP_FEE_CHARGE"
                 ],
-                "description": "Flags that indicate how to simulate a given transaction"
+                "description": "Flags that indicate how to simulate a given transaction. By default, the sequencer behavior is replicated locally (enough funds are expected to be in the account, and fee will be deducted from the balance before the simulation of the next transaction). To skip the fee charge, use the SKIP_FEE_CHARGE flag."
             },
             "NESTED_CALL": {
                 "$ref": "#/components/schemas/FUNCTION_INVOCATION"