ancient8 gas price oracle

packages/params/src/gas-price-oracles/oracles/ancient8.ts

@@ -0,0 +1,55 @@
+import { fetchJson, hexValue } from "ethers/lib/utils";
+import { BigNumber } from "ethers";
+import { parseGwei } from "./utils";
+import { IGetGasFeeResult, IOracle } from "./interfaces";
+
+export const getAncient8GasFee: IOracle =
+  async (): Promise<IGetGasFeeResult> => {
+    const { gas_prices }: Ancient8Response = await fetchJson({
+      url: "https://scan.ancient8.gg/api/v2/stats",
+      headers: {
+        "updated-gas-oracle": "true",
+      },
+    });
+    const maxPriorityFeePerGas = hexValue(
+      BigNumber.from(gas_prices.fast.priority_fee_wei)
+    );
+    const maxFeePerGas = parseGwei(gas_prices.fast.priority_fee);
+    return {
+      maxPriorityFeePerGas: maxPriorityFeePerGas,
+      gasPrice: maxFeePerGas,
+      maxFeePerGas: maxFeePerGas,
+    };
+  };
+
+type Ancient8Response = {
+  gas_prices: {
+    average: {
+      base_fee: number;
+      fiat_price: string;
+      price: number;
+      priority_fee: number;
+      priority_fee_wei: string;
+      time: number;
+      wei: string;
+    };
+    fast: {
+      base_fee: number;
+      fiat_price: string;
+      price: number;
+      priority_fee: number;
+      priority_fee_wei: string;
+      time: number;
+      wei: string;
+    };
+    slow: {
+      base_fee: number;
+      fiat_price: string;
+      price: number;
+      priority_fee: number;
+      priority_fee_wei: string;
+      time: number;
+      wei: string;
+    };
+  };
+};

packages/params/src/gas-price-oracles/oracles/index.ts

@@ -8,6 +8,7 @@ import { getOptimismGasFee } from "./optimism";
 import { IOracle } from "./interfaces";
 import { getMantleGasFee } from "./mantle";
 import { getBaseGasFee } from "./base";
+import { getAncient8GasFee } from "./ancient8";
 
 export const oracles: {
   [chainId: number]: IOracle | undefined;
@@ -19,4 +20,5 @@ export const oracles: {
   5000: getMantleGasFee,
   5001: getMantleGasFee,
   8453: getBaseGasFee,
+  888888888: getAncient8GasFee,
 };