diff --git a/optimism/price_oracle.ts b/optimism/price_oracle.ts
new file mode 100644
index 0000000..7907e71
--- /dev/null
+++ b/optimism/price_oracle.ts
@@ -0,0 +1,132 @@
+const OPTIMISM_PRICE_ORACLE = "0x420000000000000000000000000000000000000F";
+
+const OPTIMISM_PRICE_ORACLE_ABI = [
+  {
+    inputs: [],
+    name: "DECIMALS",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "baseFee",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "baseFeeScalar",
+    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "blobBaseFee",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "blobBaseFeeScalar",
+    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "decimals",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "pure",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "gasPrice",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [{ internalType: "bytes", name: "_data", type: "bytes" }],
+    name: "getL1Fee",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [
+      { internalType: "uint256", name: "_unsignedTxSize", type: "uint256" },
+    ],
+    name: "getL1FeeUpperBound",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [{ internalType: "bytes", name: "_data", type: "bytes" }],
+    name: "getL1GasUsed",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "isEcotone",
+    outputs: [{ internalType: "bool", name: "", type: "bool" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "isFjord",
+    outputs: [{ internalType: "bool", name: "", type: "bool" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "l1BaseFee",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "overhead",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "scalar",
+    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
+    stateMutability: "view",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "setEcotone",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "setFjord",
+    outputs: [],
+    stateMutability: "nonpayable",
+    type: "function",
+  },
+  {
+    inputs: [],
+    name: "version",
+    outputs: [{ internalType: "string", name: "", type: "string" }],
+    stateMutability: "view",
+    type: "function",
+  },
+];