diff --git a/environment/example.toml b/environment/example.toml
new file mode 100644
index 0000000..464dd54
--- /dev/null
+++ b/environment/example.toml
@@ -0,0 +1,92 @@
+[eth]
+    txs = ["L2ContractPutCall", "L2ContractGetCall"]
+
+[L2ContractDeployment]
+    type = "L2"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPrice = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    frequency = 15
+    totalNumber = 1500
+    chainID = 420
+
+[L2ContractPutCall]
+    type = "L2"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPrice = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    frequency = 15
+    totalNumber = 1500
+    chainID = 420
+
+[L2ContractGetCall]
+    type = "L2"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPrice = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    frequency = 15
+    totalNumber = 1500
+    chainID = 420
+
+[GethTx]
+    type = "geth"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPrice = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    frequency = 0
+    totalNumber = 0
+    chainID = 1
+
+[EIP1559]
+    type = "1559"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPremium = "0"
+    feeCap = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    frequency = 0
+    totalNumber = 0
+
+[L1ToL2]
+    type = "L2"
+    httpPath = ""
+    to = ""
+    amount = "0"
+    gasLimit = 0
+    gasPrice = "0"
+    data = ""
+    senderKeyPath = ""
+    writeSenderPath = ""
+    l1Sender = ""
+    l1RollupTxId = 0
+    sigHashType = 0
+    frequency = 0
+    totalNumber = 0
+
+[log]
+    level = "info"
+    file = ""