diff --git a/packages/web/package.json b/packages/web/package.json
index d566e5d..43b2118 100644
--- a/packages/web/package.json
+++ b/packages/web/package.json
@@ -18,6 +18,7 @@
     "@reduxjs/toolkit": "^1.8.3",
     "@tippyjs/react": "^4.2.6",
     "aws-amplify": "^4.3.30",
+    "coingecko-api": "^1.0.10",
     "dayjs": "^1.11.4",
     "ethers": "^5.6.9",
     "global": "^4.4.0",
diff --git a/packages/web/src/pages/api/query/erc20.ts b/packages/web/src/pages/api/query/erc20.ts
index 23e8c6f..3dc27a3 100644
--- a/packages/web/src/pages/api/query/erc20.ts
+++ b/packages/web/src/pages/api/query/erc20.ts
@@ -35,7 +35,7 @@ export default async function handler(
     try {
       const s3data = await S3.getObject({
         Bucket: BUCKET_NAME,
-        Key: `onchain/${account.toLowerCase()}/${chain}/ranking`,
+        Key: `onchain/${account.toLowerCase()}/${chain}/erc20`,
       }).promise();
       const scanResult: ScanERC20Result = s3data.Body? JSON.parse(s3data.Body.toString()):{
         account,
diff --git a/packages/web/src/pages/api/query/networth.ts b/packages/web/src/pages/api/query/networth.ts
new file mode 100644
index 0000000..9ce6df3
--- /dev/null
+++ b/packages/web/src/pages/api/query/networth.ts
@@ -0,0 +1,63 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+import type { NextApiRequest, NextApiResponse } from 'next';
+import { utils } from 'ethers';
+import { S3, ERROR_MESSAGE, BUCKET_NAME, ScanError, ERC20Asset, priceToUsdByTokenAddress, provider } from 'scan-helper';
+
+
+type NetworthResult = {
+  account: string,
+  networth: number,
+}
+
+const WETH_ADDR = "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2";
+const ETH_DECIMALS = 18;
+
+export default async function handler(
+  req: NextApiRequest,
+  res: NextApiResponse< NetworthResult | ScanError>
+) {
+    const { account } = req.query;
+    if (
+      typeof account !== 'string' || 
+      !utils.isAddress(account)
+    ) {
+      res.status(500).json({
+        account,
+        message: ERROR_MESSAGE.INVALID_ADDRESS,
+      } as ScanError);
+      return;
+    }
+    const erc20Assets: ERC20Asset[] = await S3.getObject({
+        Bucket: BUCKET_NAME,
+        Key: `onchain/${account.toLowerCase()}/ether/erc20`,
+    }).promise()
+    .then(s3data => {
+        const scanResult = s3data.Body? JSON.parse(s3data.Body.toString()): [];
+        return scanResult.erc20assets?? scanResult;
+    })
+    .catch(err => {
+        return [];
+    });
+    const ethBalance = utils.formatUnits(await provider.getBalance(account), ETH_DECIMALS);
+    const tokenAddressList = erc20Assets.map(asset => asset.contractAddress);
+    const balanceList = [...erc20Assets.map(asset => asset.balance), ethBalance];
+    const result: any = await priceToUsdByTokenAddress([...tokenAddressList, WETH_ADDR]);
+    const priceMap = result.data;
+    const worthList = tokenAddressList.map((addr, idx) => {
+        if (priceMap[addr]) {
+            parseInt(balanceList[idx]);
+            return priceMap[addr]['usd'] * parseInt(balanceList[idx]);
+        } else {
+            return 0;
+        }
+    });
+
+    const networth = worthList.reduce(
+        (previousValue, currentValue) => previousValue + currentValue, 0,
+    );
+
+    res.status(200).json({
+        account,
+        networth
+    } as NetworthResult);
+}
diff --git a/packages/web/src/pages/api/recommend/index.ts b/packages/web/src/pages/api/recommend/index.ts
index 4155f53..7c131b3 100644
--- a/packages/web/src/pages/api/recommend/index.ts
+++ b/packages/web/src/pages/api/recommend/index.ts
@@ -8,7 +8,7 @@ import {
 import { RecResult, getCorrelation, TABLE_NAME, docClient } from 'rec-helper';
 
 const TABLE_SIZE = 3000;
-const SCAN_RANGE = 100;
+const SCAN_RANGE = 30;
 const RANDOM_NUMBER_RANGE = TABLE_SIZE - SCAN_RANGE;
 const ONE_DAY_INTERVAL = 86400000;
 
diff --git a/packages/web/src/rec-helper.ts b/packages/web/src/rec-helper.ts
index 9eec443..c1163aa 100644
--- a/packages/web/src/rec-helper.ts
+++ b/packages/web/src/rec-helper.ts
@@ -34,5 +34,8 @@ export const getCorrelation = (
     ranking1: Frequency[],
     ranking2: Frequency[])
     : number => {
+    const map1 = new Map<string, number>(ranking1.map(fre => [fre.address, fre.frequency]));
+    const map2 = new Map<string, number>(ranking2.map(fre => [fre.address, fre.frequency]));
+    // const multi = map1.keys()
     return ranking2.length;
 };
\ No newline at end of file
diff --git a/packages/web/src/scan-helper.ts b/packages/web/src/scan-helper.ts
index e4387ae..6ae39eb 100644
--- a/packages/web/src/scan-helper.ts
+++ b/packages/web/src/scan-helper.ts
@@ -1,5 +1,6 @@
 import AWS from 'aws-sdk';
 import { ethers, utils } from 'ethers';
+const CoinGecko = require('coingecko-api');
 
 export const BUCKET_NAME = '3card';
 
@@ -7,7 +8,7 @@ AWS.config.update({
     accessKeyId: process.env.NEXT_PUBLIC_AWS_ACCESS_KEY_ID,
     secretAccessKey: process.env.NEXT_PUBLIC_AWS_SECRET_ACCESS_KEY
 });
-console.log('api key: ,', process.env.NEXT_PUBLIC_AWS_ACCESS_KEY_ID)
+// console.log('api key: ,', process.env.NEXT_PUBLIC_AWS_ACCESS_KEY_ID)
 export const S3 = new AWS.S3();
 
 export const provider = new ethers.providers.JsonRpcProvider(
@@ -178,6 +179,17 @@ export class EnsFetcher {
     }
 }
 
+export const CoinGeckoClient = new CoinGecko();
+
+export async function priceToUsdByTokenAddress(tokenAddresses: string[]) {
+    //only ethereum chain address is available
+    const data = await CoinGeckoClient.simple.fetchTokenPrice({
+        contract_addresses: tokenAddresses,
+        vs_currencies: 'usd'
+    })
+    return data;
+}
+
 export const ADDRESS_TAGS = new Map<string, string>([
     ['0x7a250d5630b4cf539739df2c5dacb4c659f2488d', 'Uniswap V2 Router'],
     ['0x7be8076f4ea4a4ad08075c2508e481d6c946d12b', 'Opensea V1'],
diff --git a/yarn.lock b/yarn.lock
index dbba46c..d0a6ce8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5722,6 +5722,11 @@ clsx@^1.1.0:
   resolved "https://registry.yarnpkg.com/clsx/-/clsx-1.2.1.tgz#0ddc4a20a549b59c93a4116bb26f5294ca17dc12"
   integrity sha512-EcR6r5a8bj6pu3ycsa/E/cKVGuTgZJZdsyUYHOksG/UHIiKfjxzRxYJpyVBwYaQeOvghal9fcc4PidlgzugAQg==
 
+coingecko-api@^1.0.10:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/coingecko-api/-/coingecko-api-1.0.10.tgz#ac8694d5999f00727fe55f0078ce2917603076b2"
+  integrity sha512-7YLLC85+daxAw5QlBWoHVBVpJRwoPr4HtwanCr8V/WRjoyHTa1Lb9DQAvv4MDJZHiz4no6HGnDQnddtjV35oRA==
+
 color-convert@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"