diff --git a/feeder/package-lock.json b/feeder/package-lock.json
index 1304c56..4be9691 100644
--- a/feeder/package-lock.json
+++ b/feeder/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@classic-terra/oracle-feeder",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@classic-terra/oracle-feeder",
-      "version": "3.1.1",
+      "version": "3.1.2",
       "license": "Apache-2.0",
       "dependencies": {
         "@terra-money/terra.js": "^3.1.7",
@@ -224,9 +224,9 @@
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     },
     "node_modules/@types/node": {
-      "version": "18.17.17",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.17.17.tgz",
-      "integrity": "sha512-cOxcXsQ2sxiwkykdJqvyFS+MLQPLvIdwh5l6gNg8qF6s+C7XSkEWOZjK+XhUZd+mYvHV/180g2cnCcIl4l06Pw=="
+      "version": "18.18.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.18.1.tgz",
+      "integrity": "sha512-3G42sxmm0fF2+Vtb9TJQpnjmP+uKlWvFa8KoEGquh4gqRmoUG/N0ufuhikw6HEsdG2G2oIKhog1GCTfz9v5NdQ=="
     },
     "node_modules/acorn": {
       "version": "8.10.0",
@@ -508,9 +508,9 @@
       "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
     },
     "node_modules/follow-redirects": {
-      "version": "1.15.2",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.2.tgz",
-      "integrity": "sha512-VQLG33o04KaQ8uYi2tVNbdrWp1QWxNNea+nmIB4EVM28v0hmP17z7aG1+wAkNzVq4KeXTq3221ye5qTJP91JwA==",
+      "version": "1.15.3",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.3.tgz",
+      "integrity": "sha512-1VzOtuEM8pC9SFU1E+8KfTjZyMztRsgEfwQl44z8A25uy13jSzTj6dyK2Df52iV0vgHCfBwLhDWevLn95w5v6Q==",
       "funding": [
         {
           "type": "individual",
diff --git a/feeder/package.json b/feeder/package.json
index 59b8e40..65c17c4 100644
--- a/feeder/package.json
+++ b/feeder/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@classic-terra/oracle-feeder",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "main": "src/index.ts",
   "license": "Apache-2.0",
   "scripts": {
diff --git a/price-server/config/default-sample.js b/price-server/config/default-sample.js
index 1925c42..a8f002f 100644
--- a/price-server/config/default-sample.js
+++ b/price-server/config/default-sample.js
@@ -518,20 +518,21 @@ module.exports = {
   fiatProvider: {
     fallbackPriority: [
       /* Providers who requires payment to obtain API key */
+      // 'exchangerate',
       // 'fastforex',
       // 'currencylayer',
       // 'fixer',
       // 'alphavantage'
       /* Free providers */
-      'exchangerate',
+      'imf',
       'frankfurter',
       'fer',
     ],
-    // https://exchangerate.host/
-    exchangerate: {
-      symbols: fiatSymbols,
-      interval: 30 * 1000,
-      timeout: 5000,
+    // https://www.imf.org/ For daily updates on the SDR/USD rate only.
+    imf: {
+      symbols: ['SDR/USD'],
+      interval: 60 * 5 * 1000,
+      timeout: 10000,
     },
     // https://fer.ee/
     fer: {
@@ -545,8 +546,8 @@ module.exports = {
       interval: 30 * 1000,
       timeout: 5000,
     },
-    // https://fastforex.readme.io
-    // price: $9/month
+    // https://fastforex.io
+    // recommended plan: $9/month
     fastforex: {
       symbols: fiatSymbols,
       interval: 60 * 1000,
@@ -554,28 +555,36 @@ module.exports = {
       apiKey: '', // necessary
     },
     // https://currencylayer.com/product
-    // recommend: Enterprise (60second Updates): $59.99/month
+    // recommended plan: Enterprise $50.99/month
     currencylayer: {
       symbols: fiatSymbols,
       interval: 60 * 1000,
       timeout: 5000,
       apiKey: '', // necessary
     },
-    // https://www.alphavantage.co/premium/
-    // recommend: 150 API request per minute: $99.99/month
-    alphavantage: {
+    // https://exchangerate.host/
+    // recommended plan: Business $79.99/month
+    exchangerate: {
       symbols: fiatSymbols,
-      interval: 60 * 1000,
+      interval: 30 * 1000,
       timeout: 5000,
-      apiKey: '', // necessary
+      apiKey: '', // required
     },
     // https://fixer.io/product
-    // recommend: professional plus(60second Updates): $99.99/month
+    // recommend plan: professional plus(60second Updates): $79.99/month
     fixer: {
       symbols: fiatSymbols,
       interval: 60 * 1000,
       timeout: 5000,
       apiKey: '', // necessary
     },
+    // https://www.alphavantage.co/premium/
+    // recommend plan: 150 API request per minute: $99.99/month
+    alphavantage: {
+      symbols: fiatSymbols,
+      interval: 60 * 1000,
+      timeout: 5000,
+      apiKey: '', // necessary
+    },
   },
 }
diff --git a/price-server/package-lock.json b/price-server/package-lock.json
index 40ff702..61d21dc 100644
--- a/price-server/package-lock.json
+++ b/price-server/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@classic-terra/price-server",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@classic-terra/price-server",
-      "version": "3.1.1",
+      "version": "3.1.2",
       "license": "Apache-2.0",
       "dependencies": {
         "@opentelemetry/api": "^1.0.2",
@@ -22,6 +22,7 @@
         "form-data": "^4.0.0",
         "lodash": "^4.17.20",
         "node-fetch": "^2.6.7",
+        "node-html-parser": "^6.1.10",
         "pako": "^2.0.3",
         "polka": "^0.5.2",
         "ts-node": "^10.7.0",
@@ -48,9 +49,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.22.15",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.22.15.tgz",
-      "integrity": "sha512-T0O+aa+4w0u06iNmapipJXMV4HoUir03hpx3/YqXXhu9xim3w+dVphjFWl1OH8NbZHw5Lbm9k45drDkgq2VNNA==",
+      "version": "7.23.1",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.23.1.tgz",
+      "integrity": "sha512-hC2v6p8ZSI/W0HUzh3V8C5g+NwSKzKPtJwSpTjwl0o297GP9+ZLQSkdvHz46CM3LqyoXxq+5G9komY+eSqSO0g==",
       "dependencies": {
         "regenerator-runtime": "^0.14.0"
       },
@@ -194,13 +195,13 @@
       "integrity": "sha512-oZLYFEAzUKyi3SKnXvj32ZCEGH6RDnao7COuCVhDydMS9NrCSVXhM79VaKyP5+Zc33m0QXEd2DN3UkU7OsHcfw=="
     },
     "node_modules/@sentry-internal/tracing": {
-      "version": "7.69.0",
-      "resolved": "https://registry.npmjs.org/@sentry-internal/tracing/-/tracing-7.69.0.tgz",
-      "integrity": "sha512-4BgeWZUj9MO6IgfO93C9ocP3+AdngqujF/+zB2rFdUe+y9S6koDyUC7jr9Knds/0Ta72N/0D6PwhgSCpHK8s0Q==",
+      "version": "7.72.0",
+      "resolved": "https://registry.npmjs.org/@sentry-internal/tracing/-/tracing-7.72.0.tgz",
+      "integrity": "sha512-DToryaRSHk9R5RLgN4ktYEXZjQdqncOAWPqyyIurji8lIobXFRfmLtGL1wjoCK6sQNgWsjhSM9kXxwGnva1DNw==",
       "dependencies": {
-        "@sentry/core": "7.69.0",
-        "@sentry/types": "7.69.0",
-        "@sentry/utils": "7.69.0",
+        "@sentry/core": "7.72.0",
+        "@sentry/types": "7.72.0",
+        "@sentry/utils": "7.72.0",
         "tslib": "^2.4.1 || ^1.9.3"
       },
       "engines": {
@@ -208,12 +209,12 @@
       }
     },
     "node_modules/@sentry/core": {
-      "version": "7.69.0",
-      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.69.0.tgz",
-      "integrity": "sha512-V6jvK2lS8bhqZDMFUtvwe2XvNstFQf5A+2LMKCNBOV/NN6eSAAd6THwEpginabjet9dHsNRmMk7WNKvrUfQhZw==",
+      "version": "7.72.0",
+      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.72.0.tgz",
+      "integrity": "sha512-G03JdQ5ZsFNRjcNNi+QvCjqOuBvYqU92Gs1T2iK3GE8dSBTu2khThydMpG4xrKZQLIpHOyiIhlFZiuPtZ66W8w==",
       "dependencies": {
-        "@sentry/types": "7.69.0",
-        "@sentry/utils": "7.69.0",
+        "@sentry/types": "7.72.0",
+        "@sentry/utils": "7.72.0",
         "tslib": "^2.4.1 || ^1.9.3"
       },
       "engines": {
@@ -221,15 +222,15 @@
       }
     },
     "node_modules/@sentry/node": {
-      "version": "7.69.0",
-      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.69.0.tgz",
-      "integrity": "sha512-T0NgPcmDQvEuz5hy6aEhXghTHHTWsiP3IWoeEAakDBHAXmtpT6lYFQZgb5AiEOt9F5KO/G/1yH3YYdpDAnKhPw==",
-      "dependencies": {
-        "@sentry-internal/tracing": "7.69.0",
-        "@sentry/core": "7.69.0",
-        "@sentry/types": "7.69.0",
-        "@sentry/utils": "7.69.0",
-        "cookie": "^0.4.1",
+      "version": "7.72.0",
+      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.72.0.tgz",
+      "integrity": "sha512-R5kNCIdaDa92EN6oCLiGJehw5wxayOM53WF60Ap6EJHZb5U8dM2BnODmQ6SCRLNB677p+620oSV6CCU286IleQ==",
+      "dependencies": {
+        "@sentry-internal/tracing": "7.72.0",
+        "@sentry/core": "7.72.0",
+        "@sentry/types": "7.72.0",
+        "@sentry/utils": "7.72.0",
+        "cookie": "^0.5.0",
         "https-proxy-agent": "^5.0.0",
         "lru_map": "^0.3.3",
         "tslib": "^2.4.1 || ^1.9.3"
@@ -239,19 +240,19 @@
       }
     },
     "node_modules/@sentry/types": {
-      "version": "7.69.0",
-      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.69.0.tgz",
-      "integrity": "sha512-zPyCox0mzitzU6SIa1KIbNoJAInYDdUpdiA+PoUmMn2hFMH1llGU/cS7f4w/mAsssTlbtlBi72RMnWUCy578bw==",
+      "version": "7.72.0",
+      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.72.0.tgz",
+      "integrity": "sha512-g6u0mk62yGshx02rfFADIfyR/S9VXcf3RG2qQPuvykrWtOfN/BOTrZypF7I+MiqKwRW76r3Pcu2C/AB+6z9XQA==",
       "engines": {
         "node": ">=8"
       }
     },
     "node_modules/@sentry/utils": {
-      "version": "7.69.0",
-      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.69.0.tgz",
-      "integrity": "sha512-4eBixe5Y+0EGVU95R4NxH3jkkjtkE4/CmSZD4In8SCkWGSauogePtq6hyiLsZuP1QHdpPb9Kt0+zYiBb2LouBA==",
+      "version": "7.72.0",
+      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.72.0.tgz",
+      "integrity": "sha512-o/MtqI7WJXuswidH0bSgBP40KN2lrnyQEIx5uoyJUJi/QEaboIsqbxU62vaFJpde8SYrbA+rTnP3J3ujF2gUag==",
       "dependencies": {
-        "@sentry/types": "7.69.0",
+        "@sentry/types": "7.72.0",
         "tslib": "^2.4.1 || ^1.9.3"
       },
       "engines": {
@@ -290,20 +291,20 @@
       "integrity": "sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ=="
     },
     "node_modules/@types/lodash": {
-      "version": "4.14.198",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.198.tgz",
-      "integrity": "sha512-trNJ/vtMZYMLhfN45uLq4ShQSw0/S7xCTLLVM+WM1rmFpba/VS42jVUgaO3w/NOLiWR/09lnYk0yMaA/atdIsg==",
+      "version": "4.14.199",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.199.tgz",
+      "integrity": "sha512-Vrjz5N5Ia4SEzWWgIVwnHNEnb1UE1XMkvY5DGXrAeOGE9imk0hgTHh5GyDjLDJi9OTCn9oo9dXH1uToK1VRfrg==",
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "20.6.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.6.2.tgz",
-      "integrity": "sha512-Y+/1vGBHV/cYk6OI1Na/LHzwnlNCAfU3ZNGrc1LdRe/LAIbdDPTTv/HU3M7yXN448aTVDq3eKRm2cg7iKLb8gw=="
+      "version": "20.7.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.7.2.tgz",
+      "integrity": "sha512-RcdC3hOBOauLP+r/kRt27NrByYtDjsXyAuSbR87O6xpsvi763WI+5fbSIvYJrXnt9w4RuxhV6eAXfIs7aaf/FQ=="
     },
     "node_modules/@types/node-fetch": {
-      "version": "2.6.5",
-      "resolved": "https://registry.npmjs.org/@types/node-fetch/-/node-fetch-2.6.5.tgz",
-      "integrity": "sha512-OZsUlr2nxvkqUFLSaY2ZbA+P1q22q+KrlxWOn/38RX+u5kTkYL2mTujEpzUhGkS+K/QCYp9oagfXG39XOzyySg==",
+      "version": "2.6.6",
+      "resolved": "https://registry.npmjs.org/@types/node-fetch/-/node-fetch-2.6.6.tgz",
+      "integrity": "sha512-95X8guJYhfqiuVVhRFxVQcf4hW/2bCuoPwDasMf/531STFoNoWTT7YDnWdXHEZKqAGUigmpG31r2FE70LwnzJw==",
       "dev": true,
       "dependencies": {
         "@types/node": "*",
@@ -311,9 +312,9 @@
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     "node_modules/@types/ws": {
-      "version": "8.5.5",
-      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.5.5.tgz",
-      "integrity": "sha512-lwhs8hktwxSjf9UaZ9tG5M03PGogvFaH8gUgLNbN9HKIg0dvv6q+gkSuJ8HN4/VbyxkuLzCjlN7GquQ0gUJfIg==",
+      "version": "8.5.6",
+      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-8.5.6.tgz",
+      "integrity": "sha512-8B5EO9jLVCy+B58PLHvLDuOD8DRVMgQzq8d55SjLCOn9kqGyqOvy27exVaTio1q1nX5zLu8/6N0n2ThSxOM6tg==",
       "dev": true,
       "dependencies": {
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@@ -372,6 +373,11 @@
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       "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg=="
     },
+    "node_modules/boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww=="
+    },
     "node_modules/combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -395,9 +401,9 @@
       }
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     "node_modules/cookie": {
-      "version": "0.4.2",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
-      "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA==",
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.5.0.tgz",
+      "integrity": "sha512-YZ3GUyn/o8gfKJlnlX7g7xq4gyO6OSuhGPKaaGssGB2qgDUS0gPgtTvoyZLTt9Ab6dC4hfc9dV5arkvc/OCmrw==",
       "engines": {
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@@ -407,6 +413,32 @@
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       "integrity": "sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ=="
     },
+    "node_modules/css-select": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-5.1.0.tgz",
+      "integrity": "sha512-nwoRF1rvRRnnCqqY7updORDsuqKzqYJ28+oSMaJMMgOauh3fvwHqMS7EZpIPqK8GL+g9mKxF1vP/ZjSeNjEVHg==",
+      "dependencies": {
+        "boolbase": "^1.0.0",
+        "css-what": "^6.1.0",
+        "domhandler": "^5.0.2",
+        "domutils": "^3.0.1",
+        "nth-check": "^2.0.1"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/fb55"
+      }
+    },
+    "node_modules/css-what": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-6.1.0.tgz",
+      "integrity": "sha512-HTUrgRJ7r4dsZKU6GjmpfRK1O76h97Z8MfS1G0FozR+oF2kG6Vfe8JE6zwrkbxigziPHinCJ+gCPjA9EaBDtRw==",
+      "engines": {
+        "node": ">= 6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/fb55"
+      }
+    },
     "node_modules/csv-writer": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/csv-writer/-/csv-writer-1.6.0.tgz",
@@ -459,6 +491,68 @@
         "node": ">=0.3.1"
       }
     },
+    "node_modules/dom-serializer": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-2.0.0.tgz",
+      "integrity": "sha512-wIkAryiqt/nV5EQKqQpo3SToSOV9J0DnbJqwK7Wv/Trc92zIAYZ4FlMu+JPFW1DfGFt81ZTCGgDEabffXeLyJg==",
+      "dependencies": {
+        "domelementtype": "^2.3.0",
+        "domhandler": "^5.0.2",
+        "entities": "^4.2.0"
+      },
+      "funding": {
+        "url": "https://github.com/cheeriojs/dom-serializer?sponsor=1"
+      }
+    },
+    "node_modules/domelementtype": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-2.3.0.tgz",
+      "integrity": "sha512-OLETBj6w0OsagBwdXnPdN0cnMfF9opN69co+7ZrbfPGrdpPVNBUj02spi6B1N7wChLQiPn4CSH/zJvXw56gmHw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fb55"
+        }
+      ]
+    },
+    "node_modules/domhandler": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-5.0.3.tgz",
+      "integrity": "sha512-cgwlv/1iFQiFnU96XXgROh8xTeetsnJiDsTc7TYCLFd9+/WNkIqPTxiM/8pSd8VIrhXGTf1Ny1q1hquVqDJB5w==",
+      "dependencies": {
+        "domelementtype": "^2.3.0"
+      },
+      "engines": {
+        "node": ">= 4"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domhandler?sponsor=1"
+      }
+    },
+    "node_modules/domutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-3.1.0.tgz",
+      "integrity": "sha512-H78uMmQtI2AhgDJjWeQmHwJJ2bLPD3GMmO7Zja/ZZh84wkm+4ut+IUnUdRa8uCGX88DiVx1j6FRe1XfxEgjEZA==",
+      "dependencies": {
+        "dom-serializer": "^2.0.0",
+        "domelementtype": "^2.3.0",
+        "domhandler": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domutils?sponsor=1"
+      }
+    },
+    "node_modules/entities": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
+      "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
     "node_modules/form-data": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.0.tgz",
@@ -472,6 +566,14 @@
         "node": ">= 6"
       }
     },
+    "node_modules/he": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
+      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==",
+      "bin": {
+        "he": "bin/he"
+      }
+    },
     "node_modules/https-proxy-agent": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
@@ -588,6 +690,26 @@
         }
       }
     },
+    "node_modules/node-html-parser": {
+      "version": "6.1.10",
+      "resolved": "https://registry.npmjs.org/node-html-parser/-/node-html-parser-6.1.10.tgz",
+      "integrity": "sha512-6/uWdWxjQWQ7tMcFK2wWlrflsQUzh1HsEzlIf2j5+TtzfhT2yUvg3DwZYAmjEHeR3uX74ko7exjHW69J0tOzIg==",
+      "dependencies": {
+        "css-select": "^5.1.0",
+        "he": "1.2.0"
+      }
+    },
+    "node_modules/nth-check": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
+      "integrity": "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==",
+      "dependencies": {
+        "boolbase": "^1.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/nth-check?sponsor=1"
+      }
+    },
     "node_modules/pako": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/pako/-/pako-2.1.0.tgz",
@@ -746,9 +868,9 @@
       }
     },
     "node_modules/ws": {
-      "version": "8.14.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.14.1.tgz",
-      "integrity": "sha512-4OOseMUq8AzRBI/7SLMUwO+FEDnguetSk7KMb1sHwvF2w2Wv5Hoj0nlifx8vtGsftE/jWHojPy8sMMzYLJ2G/A==",
+      "version": "8.14.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.14.2.tgz",
+      "integrity": "sha512-wEBG1ftX4jcglPxgFCMJmZ2PLtSbJ2Peg6TmpJFTbe9GZYOQCDPdMYu/Tm0/bGZkw8paZnJY45J4K2PZrLYq8g==",
       "engines": {
         "node": ">=10.0.0"
       },
diff --git a/price-server/package.json b/price-server/package.json
index 2858f3c..c7c5200 100644
--- a/price-server/package.json
+++ b/price-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@classic-terra/price-server",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "main": "src/main.ts",
   "license": "Apache-2.0",
   "scripts": {
@@ -20,6 +20,7 @@
     "form-data": "^4.0.0",
     "lodash": "^4.17.20",
     "node-fetch": "^2.6.7",
+    "node-html-parser": "^6.1.10",
     "pako": "^2.0.3",
     "polka": "^0.5.2",
     "ts-node": "^10.7.0",
diff --git a/price-server/src/provider/fiat/FiatProvider.ts b/price-server/src/provider/fiat/FiatProvider.ts
index 43e76ae..084878c 100644
--- a/price-server/src/provider/fiat/FiatProvider.ts
+++ b/price-server/src/provider/fiat/FiatProvider.ts
@@ -1,6 +1,6 @@
 import * as config from 'config'
 import { Provider, ProviderOptions } from 'provider/base'
-import { CurrencyLayer, AlphaVantage, Fixer, ExchangeRate, Fer, Frankfurter, Fastforex } from './quoter'
+import { CurrencyLayer, AlphaVantage, Fixer, ExchangeRate, Fer, Frankfurter, Fastforex, IMF } from './quoter'
 
 class FiatProvider extends Provider {
   constructor(options: ProviderOptions) {
@@ -24,6 +24,7 @@ class FiatProvider extends Provider {
       name === 'frankfurter' && this.quoters.push(new Frankfurter(option))
       name === 'exchangerate' && this.quoters.push(new ExchangeRate(option))
       name === 'fastforex' && this.quoters.push(new Fastforex(option))
+      name === 'imf' && this.quoters.push(new IMF(option))
     }
 
     await super.initialize()
diff --git a/price-server/src/provider/fiat/quoter/ExchangeRate.ts b/price-server/src/provider/fiat/quoter/ExchangeRate.ts
index e0fd712..7a9fb0f 100644
--- a/price-server/src/provider/fiat/quoter/ExchangeRate.ts
+++ b/price-server/src/provider/fiat/quoter/ExchangeRate.ts
@@ -29,6 +29,7 @@ export class ExchangeRate extends Quoter {
     const params = {
       base: 'USD',
       symbols: this.symbols.map((symbol) => (symbol === 'SDR/USD' ? 'XDR' : symbol.replace('/USD', ''))).join(','),
+      access_key: this.options.apiKey,
     }
 
     const response: Response = await nodeFetch(`https://api.exchangerate.host/latest?${toQueryString(params)}`, {
diff --git a/price-server/src/provider/fiat/quoter/Fer.ts b/price-server/src/provider/fiat/quoter/Fer.ts
index c04d660..2111165 100644
--- a/price-server/src/provider/fiat/quoter/Fer.ts
+++ b/price-server/src/provider/fiat/quoter/Fer.ts
@@ -1,39 +1,48 @@
+import { groupBy } from 'lodash'
 import fetch from 'lib/fetch'
 import { errorHandler } from 'lib/error'
-import { toQueryString } from 'lib/fetch'
 import * as logger from 'lib/logger'
 import { num } from 'lib/num'
 import { Quoter } from 'provider/base'
-import { getBaseCurrency, getQuoteCurrency } from 'lib/currency'
+import { getQuoteCurrency } from 'lib/currency'
 
 interface Response {
   date: string
   base: string
-  rates: object
+  rates: {
+    [currency: string]: number
+  }
 }
 
 export class Fer extends Quoter {
-  private async updateLastPrice(symbol: string): Promise<void> {
-    const base = getBaseCurrency(symbol)
-    const to = getQuoteCurrency(symbol)
-
-    const params = { base, to }
-    const response: Response = await fetch(`https://api.fer.ee/latest?${toQueryString(params)}`, {
-      timeout: this.options.timeout,
-    }).then((res) => res.json())
-
-    if (!response) {
-      logger.error(`${this.constructor.name}: wrong api response`, response ? JSON.stringify(response) : 'empty')
-      throw new Error('Invalid response from Fer')
-    }
-
-    this.setPrice(symbol, num(response.rates[to]))
+  private async updatePrices(): Promise<void> {
+    const quoteGroup = groupBy(this.symbols, getQuoteCurrency)
+
+    await Promise.all(
+      Object.keys(quoteGroup).map(async (quote) => {
+        const response: Response = await fetch(`https://api.fer.ee/latest?from=${quote}`, {
+          timeout: this.options.timeout,
+        }).then((res) => res.json())
+
+        if (!response) {
+          logger.error(`${this.constructor.name}: wrong api response`, response ? JSON.stringify(response) : 'empty')
+          throw new Error('Invalid response from Frankfurter')
+        }
+
+        Object.keys(response.rates).forEach((base) => {
+          const symbol = `${base}/${quote}`
+
+          if (this.symbols.indexOf(symbol) != -1) {
+            const rate = num(1).dividedBy(num(response.rates[base]))
+            this.setPrice(symbol, rate)
+          }
+        })
+      })
+    )
   }
 
   protected async update(): Promise<boolean> {
-    for (const symbol of this.symbols) {
-      await this.updateLastPrice(symbol).catch(errorHandler)
-    }
+    await this.updatePrices().catch(errorHandler)
 
     return true
   }
diff --git a/price-server/src/provider/fiat/quoter/Frankfurter.ts b/price-server/src/provider/fiat/quoter/Frankfurter.ts
index 20309f5..5d0abf7 100644
--- a/price-server/src/provider/fiat/quoter/Frankfurter.ts
+++ b/price-server/src/provider/fiat/quoter/Frankfurter.ts
@@ -1,39 +1,48 @@
+import { groupBy } from 'lodash'
 import fetch from 'lib/fetch'
 import { errorHandler } from 'lib/error'
-import { toQueryString } from 'lib/fetch'
 import * as logger from 'lib/logger'
 import { num } from 'lib/num'
 import { Quoter } from 'provider/base'
-import { getBaseCurrency, getQuoteCurrency } from 'lib/currency'
+import { getQuoteCurrency } from 'lib/currency'
 
 interface Response {
   date: string
   base: string
-  rates: object
+  rates: {
+    [currency: string]: number
+  }
 }
 
 export class Frankfurter extends Quoter {
-  private async updateLastPrice(symbol: string): Promise<void> {
-    const from = getBaseCurrency(symbol)
-    const to = getQuoteCurrency(symbol)
-
-    const params = { from, to }
-    const response: Response = await fetch(`https://api.frankfurter.APP/latest?${toQueryString(params)}`, {
-      timeout: this.options.timeout,
-    }).then((res) => res.json())
-
-    if (!response) {
-      logger.error(`${this.constructor.name}: wrong api response`, response ? JSON.stringify(response) : 'empty')
-      throw new Error('Invalid response from Frankfurter')
-    }
-
-    this.setPrice(symbol, num(response.rates[to]))
+  private async updatePrices(): Promise<void> {
+    const quoteGroup = groupBy(this.symbols, getQuoteCurrency)
+
+    await Promise.all(
+      Object.keys(quoteGroup).map(async (quote) => {
+        const response: Response = await fetch(`https://api.frankfurter.app/latest?from=${quote}`, {
+          timeout: this.options.timeout,
+        }).then((res) => res.json())
+
+        if (!response) {
+          logger.error(`${this.constructor.name}: wrong api response`, response ? JSON.stringify(response) : 'empty')
+          throw new Error('Invalid response from Frankfurter')
+        }
+
+        Object.keys(response.rates).forEach((base) => {
+          const symbol = `${base}/${quote}`
+
+          if (this.symbols.indexOf(symbol) != -1) {
+            const rate = num(1).dividedBy(num(response.rates[base]))
+            this.setPrice(symbol, rate)
+          }
+        })
+      })
+    )
   }
 
   protected async update(): Promise<boolean> {
-    for (const symbol of this.symbols) {
-      await this.updateLastPrice(symbol).catch(errorHandler)
-    }
+    await this.updatePrices().catch(errorHandler)
 
     return true
   }
diff --git a/price-server/src/provider/fiat/quoter/IMF.ts b/price-server/src/provider/fiat/quoter/IMF.ts
new file mode 100644
index 0000000..9b49d0f
--- /dev/null
+++ b/price-server/src/provider/fiat/quoter/IMF.ts
@@ -0,0 +1,38 @@
+import { parse } from 'node-html-parser'
+import fetch from 'lib/fetch'
+import { errorHandler } from 'lib/error'
+import { num } from 'lib/num'
+import { Quoter } from 'provider/base'
+
+const SDR_VALUATION_URL = 'https://www.imf.org/external/np/fin/data/rms_sdrv.aspx'
+
+async function fetchQuote() {
+  const text = await fetch(SDR_VALUATION_URL).then((res) => res.text())
+
+  const doc = parse(text)
+  const tds = doc.querySelectorAll('.tightest td')
+  const idx = tds.findIndex((el) => el.structuredText === ' SDR1 = US$')
+
+  if (idx === -1) {
+    throw new Error('cannot find SDR/USD element from HTML document')
+  }
+
+  // sample format: ' 1.32149 2'
+  return num(tds[idx + 1].structuredText.split(' ')[1])
+}
+
+// fetchQuote().then(console.log).catch(console.error) // For test
+
+export class IMF extends Quoter {
+  protected async update(): Promise<boolean> {
+    if (this.symbols.indexOf('SDR/USD') !== -1) {
+      await fetchQuote()
+        .then((rate) => this.setPrice('SDR/USD', rate))
+        .catch(errorHandler)
+    }
+
+    return true
+  }
+}
+
+export default IMF
diff --git a/price-server/src/provider/fiat/quoter/index.ts b/price-server/src/provider/fiat/quoter/index.ts
index 9bb850b..e78fb7e 100644
--- a/price-server/src/provider/fiat/quoter/index.ts
+++ b/price-server/src/provider/fiat/quoter/index.ts
@@ -5,3 +5,4 @@ export * from './Fer'
 export * from './Frankfurter'
 export * from './Fastforex'
 export * from './ExchangeRate'
+export * from './IMF'