diff --git a/database/index.js b/database/index.js
new file mode 100644
index 0000000..9b029af
--- /dev/null
+++ b/database/index.js
@@ -0,0 +1,42 @@
+import * as lancedb from "@lancedb/lancedb";
+import { get, post } from "../tools/request.js"
+import { Schema, Field, FixedSizeList, Int16, Float16, Utf8 } from "apache-arrow";
+
+const uri = "/tmp/lancedb/";
+const db = await lancedb.connect(uri);
+
+const table = await db.createEmptyTable("rag_data", new Schema([
+    new Field("id", new Int16()),
+    new Field("vector", new FixedSizeList(384, new Field("item", new Float16(), true)), false),
+    new Field("question", new Utf8()),
+    new Field("answer", new Utf8())
+]), {
+    // mode: "overwrite",
+    existOk: true
+})
+
+export async function loadDataset(dataset_link) {
+    const {rows, http_error} = await get('', {}, { URL: dataset_link })
+    if(http_error) {
+        return false;
+    }
+    await table.add(rows.map(({ row_id, row })=>{
+        const { question, answer, question_embedding } = row;
+        return { id: row_id, question, answer, vector: question_embedding }
+    }))
+    return true;
+}
+
+export async function searchByEmbedding(vector) {
+    const record = await table.search(vector).limit(1).toArray();
+    if(!record.length) return null;
+    const { question, answer } = record[0];
+    return { question, answer };
+}
+
+export async function searchByMessage(msg) {
+    const { embedding } = await post('embedding', {body: {
+        content: msg
+    }}, { eng: "embedding" });
+    return await searchByEmbedding(embedding);
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 79bcfc6..9f43f66 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,8 @@
   "description": "OpenAI like APIs",
   "main": "index.js",
   "scripts": {
-    "start": "node index.js --disable-warning=ExperimentalWarning",
-    "dev": "nodemon index.js --disable-warning=ExperimentalWarning",
+    "start": "node --disable-warning=ExperimentalWarning index.js",
+    "dev": "nodemon --disable-warning=ExperimentalWarning index.js",
     "lint": "npx eslint .",
     "build": "npm install && node index.js"
   },
@@ -17,6 +17,8 @@
     "@babel/eslint-parser": "^7.25.1",
     "@babel/plugin-syntax-import-attributes": "^7.24.7",
     "@eslint/js": "^9.8.0",
+    "@lancedb/lancedb": "^0.8.0",
+    "apache-arrow": "^17.0.0",
     "body-parser": "^1.20.2",
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 44fd9a5..6164dfe 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -17,6 +17,12 @@ importers:
       '@eslint/js':
         specifier: ^9.8.0
         version: 9.8.0
+      '@lancedb/lancedb':
+        specifier: ^0.8.0
+        version: 0.8.0(apache-arrow@17.0.0)
+      apache-arrow:
+        specifier: ^17.0.0
+        version: 17.0.0
       body-parser:
         specifier: ^1.20.2
         version: 1.20.2
@@ -191,6 +197,44 @@ packages:
   '@jridgewell/trace-mapping@0.3.25':
     resolution: {integrity: sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==}
 
+  '@lancedb/lancedb-darwin-arm64@0.8.0':
+    resolution: {integrity: sha512-GiVab/VnQpsxDD7rLcTDRFQygQhYU3sMYGXzK0Q88GVPo3Ng2fU9x7NoaRNQbV8k4X4gR7IdbNiqEAjmSLNMBA==}
+    engines: {node: '>= 18'}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@lancedb/lancedb-darwin-x64@0.8.0':
+    resolution: {integrity: sha512-NGEM8rLFkkPnTtVDVZ88+IcRB+wtsWtiuDd6Rd8fh19uwcid36idc8iFVPuRQEoLfCNyzugmSHf4yC0WNNaK9Q==}
+    engines: {node: '>= 18'}
+    cpu: [x64]
+    os: [darwin]
+
+  '@lancedb/lancedb-linux-arm64-gnu@0.8.0':
+    resolution: {integrity: sha512-loBnUaKoTu3zLMJ++hNAg7LquN4UAuNPPEfYHr3i53TZrJ3/W/Ozx0Gwqxl7vqKIJ97g+iV7vTsmJhq+98/MDQ==}
+    engines: {node: '>= 18'}
+    cpu: [arm64]
+    os: [linux]
+
+  '@lancedb/lancedb-linux-x64-gnu@0.8.0':
+    resolution: {integrity: sha512-3PoQSLVK0txXn2nTIzvSde1w3aiOIz31Qz4wLavtH7K3xNYYQ6JfPWpV8ac6e0y9LM+Pj+fyKEDHf0lK/JbQRw==}
+    engines: {node: '>= 18'}
+    cpu: [x64]
+    os: [linux]
+
+  '@lancedb/lancedb-win32-x64-msvc@0.8.0':
+    resolution: {integrity: sha512-Ugj3N7LFwh45LSUQeJqs7Z7466/YWUC8DPgEblcsoCSSzgV09MPGv6cnCy6ssRVmMk9aKUmEDm/9Z/k8ETt9KQ==}
+    engines: {node: '>= 18'}
+    cpu: [x64]
+    os: [win32]
+
+  '@lancedb/lancedb@0.8.0':
+    resolution: {integrity: sha512-nU7Wxaz3QN7FlXD8kCVu90v870jrt4mM+NsVmAtAW/MAv1xLlbp8jfKgETnxPIukPTy+6hyxrC74TJqdnEf+hA==}
+    engines: {node: '>= 18'}
+    cpu: [x64, arm64]
+    os: [darwin, linux, win32]
+    peerDependencies:
+      apache-arrow: '>=13.0.0 <=17.0.0'
+
   '@nicolo-ribaudo/eslint-scope-5-internals@5.1.1-v1':
     resolution: {integrity: sha512-54/JRvkLIzzDWshCWfuhadfrfZVPiElY8Fcgmg1HroEly/EDSszzhBAsarCux+D/kOslTRquNzuyGSmUSTTHGg==}
 
@@ -206,6 +250,18 @@ packages:
     resolution: {integrity: sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==}
     engines: {node: '>= 8'}
 
+  '@swc/helpers@0.5.12':
+    resolution: {integrity: sha512-KMZNXiGibsW9kvZAO1Pam2JPTDBm+KSHMMHWdsyI/1DbIZjT2A6Gy3hblVXUMEDvUAKq+e0vL0X0o54owWji7g==}
+
+  '@types/command-line-args@5.2.3':
+    resolution: {integrity: sha512-uv0aG6R0Y8WHZLTamZwtfsDLVRnOa+n+n5rEvFWL5Na5gZ8V2Teab/duDPFzIIIhs9qizDpcavCusCLJZu62Kw==}
+
+  '@types/command-line-usage@5.0.4':
+    resolution: {integrity: sha512-BwR5KP3Es/CSht0xqBcUXS3qCAUVXwpRKsV2+arxeb65atasuXG9LykC9Ab10Cw3s2raH92ZqOeILaQbsB2ACg==}
+
+  '@types/node@20.14.14':
+    resolution: {integrity: sha512-d64f00982fS9YoOgJkAMolK7MN8Iq3TDdVjchbYHdEmjth/DHowx82GnoA+tVUAN+7vxfYUgAzi+JXbKNd2SDQ==}
+
   accepts@1.3.8:
     resolution: {integrity: sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==}
     engines: {node: '>= 0.6'}
@@ -235,9 +291,21 @@ packages:
     resolution: {integrity: sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==}
     engines: {node: '>=8'}
 
+  apache-arrow@17.0.0:
+    resolution: {integrity: sha512-X0p7auzdnGuhYMVKYINdQssS4EcKec9TCXyez/qtJt32DrIMGbzqiaMiQ0X6fQlQpw8Fl0Qygcv4dfRAr5Gu9Q==}
+    hasBin: true
+
   argparse@2.0.1:
     resolution: {integrity: sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==}
 
+  array-back@3.1.0:
+    resolution: {integrity: sha512-TkuxA4UCOvxuDK6NZYXCalszEzj+TLszyASooky+i742l9TqsOdYCMJJupxRic61hwquNtppB3hgcuq9SVSH1Q==}
+    engines: {node: '>=6'}
+
+  array-back@6.2.2:
+    resolution: {integrity: sha512-gUAZ7HPyb4SJczXAMUXMGAvI976JoK3qEx9v1FTmeYuJj0IBiaKttG1ydtGKdkfqWkIkouke7nG8ufGy77+Cvw==}
+    engines: {node: '>=12.17'}
+
   array-flatten@1.1.1:
     resolution: {integrity: sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==}
 
@@ -284,6 +352,10 @@ packages:
   caniuse-lite@1.0.30001643:
     resolution: {integrity: sha512-ERgWGNleEilSrHM6iUz/zJNSQTP8Mr21wDWpdgvRwcTXGAq6jMtOUPP4dqFPTdKqZ2wKTdtB+uucZ3MRpAUSmg==}
 
+  chalk-template@0.4.0:
+    resolution: {integrity: sha512-/ghrgmhfY8RaSdeo43hNXxpoHAtxdbskUHjPpfqUWGttFgycUhYPGx3YZBCnUCvOa7Doivn1IZec3DEGFoMgLg==}
+    engines: {node: '>=12'}
+
   chalk@2.4.2:
     resolution: {integrity: sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==}
     engines: {node: '>=4'}
@@ -309,6 +381,14 @@ packages:
     resolution: {integrity: sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==}
     engines: {node: '>= 0.8'}
 
+  command-line-args@5.2.1:
+    resolution: {integrity: sha512-H4UfQhZyakIjC74I9d34fGYDwk3XpSr17QhEd0Q3I9Xq1CETHo4Hcuo87WyWHpAF1aSLjLRf5lD9ZGX2qStUvg==}
+    engines: {node: '>=4.0.0'}
+
+  command-line-usage@7.0.3:
+    resolution: {integrity: sha512-PqMLy5+YGwhMh1wS04mVG44oqDsgyLRSKJBdOo1bnYhMKBW65gZF1dRp2OZRhiTjgUHljy99qkO7bsctLaw35Q==}
+    engines: {node: '>=12.20.0'}
+
   concat-map@0.0.1:
     resolution: {integrity: sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==}
 
@@ -492,6 +572,10 @@ packages:
     resolution: {integrity: sha512-5uXcUVftlQMFnWC9qu/svkWv3GTd2PfUhK/3PLkYNAe7FbqJMt3515HaxE6eRL74GdsriiwujiawdaB1BpEISg==}
     engines: {node: '>= 0.8'}
 
+  find-replace@3.0.0:
+    resolution: {integrity: sha512-6Tb2myMioCAgv5kfvP5/PkZZ/ntTpVK39fHY7WkWBgvbeE+VHd/tZuZ4mrC+bxh4cfOZeYKVPaJIZtZXV7GNCQ==}
+    engines: {node: '>=4.0.0'}
+
   find-up@5.0.0:
     resolution: {integrity: sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng==}
     engines: {node: '>=10'}
@@ -500,6 +584,9 @@ packages:
     resolution: {integrity: sha512-f7ccFPK3SXFHpx15UIGyRJ/FJQctuKZ0zVuN3frBo4HnK3cay9VEW0R6yPYFHC0AgqhukPzKjq22t5DmAyqGyw==}
     engines: {node: '>=16'}
 
+  flatbuffers@24.3.25:
+    resolution: {integrity: sha512-3HDgPbgiwWMI9zVB7VYBHaMrbOO7Gm0v+yD2FV/sCKj+9NDeVL7BOBYUuhWAQGKWOzBo8S9WdMvV0eixO233XQ==}
+
   flatted@3.3.1:
     resolution: {integrity: sha512-X8cqMLLie7KsNUDSdzeN8FYK9rEt4Dt67OsG/DNGnYTSDBG4uFAJFBnUeiV+zCVAvwFy56IjM9sH51jVaEhNxw==}
 
@@ -631,6 +718,10 @@ packages:
     engines: {node: '>=4'}
     hasBin: true
 
+  json-bignum@0.0.3:
+    resolution: {integrity: sha512-2WHyXj3OfHSgNyuzDbSxI1w2jgw5gkWSWhS7Qg4bWXx1nLk3jnbwfUeS0PSba3IzpTUWdHxBieELUzXRjQB2zg==}
+    engines: {node: '>=0.8'}
+
   json-buffer@3.0.1:
     resolution: {integrity: sha512-4bV5BfR2mqfQTJm+V5tPPdf+ZpuhiIvTuAB5g8kcrXOZpTT/QwwVRWBywX1ozr6lEuPdbHxwaJlm9G6mI2sfSQ==}
 
@@ -660,6 +751,9 @@ packages:
     resolution: {integrity: sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==}
     engines: {node: '>=10'}
 
+  lodash.camelcase@4.3.0:
+    resolution: {integrity: sha512-TwuEnCnxbc3rAvhf/LbG7tJUDzhqXyFnv3dtzLOPgCG/hODL7WFnsbwktkD7yUV0RrreP/l1PALq/YSg6VvjlA==}
+
   lodash.merge@4.6.2:
     resolution: {integrity: sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==}
 
@@ -802,6 +896,9 @@ packages:
     resolution: {integrity: sha512-8zGqypfENjCIqGhgXToC8aB2r7YrBX+AQAfIPs/Mlk+BtPTztOvTS01NRW/3Eh60J+a48lt8qsCzirQ6loCVfA==}
     engines: {node: '>= 0.8'}
 
+  reflect-metadata@0.2.2:
+    resolution: {integrity: sha512-urBwgfrvVP/eAyXx4hluJivBKzuEbSQs9rKWCrCkbSxNv8mxPcUZKeuoF3Uy4mJl3Lwprp6yy5/39VWigZ4K6Q==}
+
   resolve-from@4.0.0:
     resolution: {integrity: sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==}
     engines: {node: '>=4'}
@@ -887,6 +984,10 @@ packages:
     peerDependencies:
       express: '>=4.0.0 || >=5.0.0-beta'
 
+  table-layout@4.1.1:
+    resolution: {integrity: sha512-iK5/YhZxq5GO5z8wb0bY1317uDF3Zjpha0QFFLA8/trAoiLbQD0HUbMesEaxyzUgDxi2QlcbM8IvqOlEjgoXBA==}
+    engines: {node: '>=12.17'}
+
   tdigest@0.1.2:
     resolution: {integrity: sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==}
 
@@ -901,6 +1002,9 @@ packages:
     resolution: {integrity: sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==}
     engines: {node: '>=0.6'}
 
+  tslib@2.6.3:
+    resolution: {integrity: sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ==}
+
   tsscmp@1.0.6:
     resolution: {integrity: sha512-LxhtAkPDTkVCMQjt2h6eBVY28KCjikZqZfMcC15YBeNjkgUpdCfBu5HoiOTDu86v6smE8yOjyEktJ8hlbANHQA==}
     engines: {node: '>=0.6.x'}
@@ -913,6 +1017,17 @@ packages:
     resolution: {integrity: sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==}
     engines: {node: '>= 0.6'}
 
+  typical@4.0.0:
+    resolution: {integrity: sha512-VAH4IvQ7BDFYglMd7BPRDfLgxZZX4O4TFcRDA6EN5X7erNJJq+McIEp8np9aVtxrCJ6qx4GTYVfOWNjcqwZgRw==}
+    engines: {node: '>=8'}
+
+  typical@7.1.1:
+    resolution: {integrity: sha512-T+tKVNs6Wu7IWiAce5BgMd7OZfNYUndHwc5MknN+UHOudi7sGZzuHdCadllRuqJ3fPtgFtIH9+lt9qRv6lmpfA==}
+    engines: {node: '>=12.17'}
+
+  undici-types@5.26.5:
+    resolution: {integrity: sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==}
+
   unpipe@1.0.0:
     resolution: {integrity: sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==}
     engines: {node: '>= 0.8'}
@@ -947,6 +1062,10 @@ packages:
     resolution: {integrity: sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==}
     engines: {node: '>=0.10.0'}
 
+  wordwrapjs@5.1.0:
+    resolution: {integrity: sha512-JNjcULU2e4KJwUNv6CHgI46UvDGitb6dGryHajXTDiLgg1/RiGoPSDw4kZfYnwGtEXf2ZMeIewDQgFGzkCB2Sg==}
+    engines: {node: '>=12.17'}
+
   yallist@3.1.1:
     resolution: {integrity: sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==}
 
@@ -1142,6 +1261,35 @@ snapshots:
       '@jridgewell/resolve-uri': 3.1.2
       '@jridgewell/sourcemap-codec': 1.5.0
 
+  '@lancedb/lancedb-darwin-arm64@0.8.0':
+    optional: true
+
+  '@lancedb/lancedb-darwin-x64@0.8.0':
+    optional: true
+
+  '@lancedb/lancedb-linux-arm64-gnu@0.8.0':
+    optional: true
+
+  '@lancedb/lancedb-linux-x64-gnu@0.8.0':
+    optional: true
+
+  '@lancedb/lancedb-win32-x64-msvc@0.8.0':
+    optional: true
+
+  '@lancedb/lancedb@0.8.0(apache-arrow@17.0.0)':
+    dependencies:
+      apache-arrow: 17.0.0
+      axios: 1.7.2(debug@4.3.6)
+      reflect-metadata: 0.2.2
+    optionalDependencies:
+      '@lancedb/lancedb-darwin-arm64': 0.8.0
+      '@lancedb/lancedb-darwin-x64': 0.8.0
+      '@lancedb/lancedb-linux-arm64-gnu': 0.8.0
+      '@lancedb/lancedb-linux-x64-gnu': 0.8.0
+      '@lancedb/lancedb-win32-x64-msvc': 0.8.0
+    transitivePeerDependencies:
+      - debug
+
   '@nicolo-ribaudo/eslint-scope-5-internals@5.1.1-v1':
     dependencies:
       eslint-scope: 5.1.1
@@ -1158,6 +1306,18 @@ snapshots:
       '@nodelib/fs.scandir': 2.1.5
       fastq: 1.17.1
 
+  '@swc/helpers@0.5.12':
+    dependencies:
+      tslib: 2.6.3
+
+  '@types/command-line-args@5.2.3': {}
+
+  '@types/command-line-usage@5.0.4': {}
+
+  '@types/node@20.14.14':
+    dependencies:
+      undici-types: 5.26.5
+
   accepts@1.3.8:
     dependencies:
       mime-types: 2.1.35
@@ -1186,8 +1346,24 @@ snapshots:
     dependencies:
       color-convert: 2.0.1
 
+  apache-arrow@17.0.0:
+    dependencies:
+      '@swc/helpers': 0.5.12
+      '@types/command-line-args': 5.2.3
+      '@types/command-line-usage': 5.0.4
+      '@types/node': 20.14.14
+      command-line-args: 5.2.1
+      command-line-usage: 7.0.3
+      flatbuffers: 24.3.25
+      json-bignum: 0.0.3
+      tslib: 2.6.3
+
   argparse@2.0.1: {}
 
+  array-back@3.1.0: {}
+
+  array-back@6.2.2: {}
+
   array-flatten@1.1.1: {}
 
   asynckit@0.4.0: {}
@@ -1251,6 +1427,10 @@ snapshots:
 
   caniuse-lite@1.0.30001643: {}
 
+  chalk-template@0.4.0:
+    dependencies:
+      chalk: 4.1.2
+
   chalk@2.4.2:
     dependencies:
       ansi-styles: 3.2.1
@@ -1278,6 +1458,20 @@ snapshots:
     dependencies:
       delayed-stream: 1.0.0
 
+  command-line-args@5.2.1:
+    dependencies:
+      array-back: 3.1.0
+      find-replace: 3.0.0
+      lodash.camelcase: 4.3.0
+      typical: 4.0.0
+
+  command-line-usage@7.0.3:
+    dependencies:
+      array-back: 6.2.2
+      chalk-template: 0.4.0
+      table-layout: 4.1.1
+      typical: 7.1.1
+
   concat-map@0.0.1: {}
 
   content-disposition@0.5.4:
@@ -1491,6 +1685,10 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
+  find-replace@3.0.0:
+    dependencies:
+      array-back: 3.1.0
+
   find-up@5.0.0:
     dependencies:
       locate-path: 6.0.0
@@ -1501,6 +1699,8 @@ snapshots:
       flatted: 3.3.1
       keyv: 4.5.4
 
+  flatbuffers@24.3.25: {}
+
   flatted@3.3.1: {}
 
   follow-redirects@1.15.6(debug@4.3.6):
@@ -1602,6 +1802,8 @@ snapshots:
 
   jsesc@2.5.2: {}
 
+  json-bignum@0.0.3: {}
+
   json-buffer@3.0.1: {}
 
   json-schema-traverse@0.4.1: {}
@@ -1627,6 +1829,8 @@ snapshots:
     dependencies:
       p-locate: 5.0.0
 
+  lodash.camelcase@4.3.0: {}
+
   lodash.merge@4.6.2: {}
 
   lru-cache@5.1.1:
@@ -1740,6 +1944,8 @@ snapshots:
       iconv-lite: 0.4.24
       unpipe: 1.0.0
 
+  reflect-metadata@0.2.2: {}
+
   resolve-from@4.0.0: {}
 
   reusify@1.0.4: {}
@@ -1845,6 +2051,11 @@ snapshots:
       express: 4.19.2
       swagger-ui-dist: 5.17.14
 
+  table-layout@4.1.1:
+    dependencies:
+      array-back: 6.2.2
+      wordwrapjs: 5.1.0
+
   tdigest@0.1.2:
     dependencies:
       bintrees: 1.0.2
@@ -1855,6 +2066,8 @@ snapshots:
 
   toidentifier@1.0.1: {}
 
+  tslib@2.6.3: {}
+
   tsscmp@1.0.6: {}
 
   type-check@0.4.0:
@@ -1866,6 +2079,12 @@ snapshots:
       media-typer: 0.3.0
       mime-types: 2.1.35
 
+  typical@4.0.0: {}
+
+  typical@7.1.1: {}
+
+  undici-types@5.26.5: {}
+
   unpipe@1.0.0: {}
 
   update-browserslist-db@1.1.0(browserslist@4.23.2):
@@ -1890,6 +2109,8 @@ snapshots:
 
   word-wrap@1.2.5: {}
 
+  wordwrapjs@5.1.0: {}
+
   yallist@3.1.1: {}
 
   yocto-queue@0.1.0: {}
diff --git a/tools/request.js b/tools/request.js
index 9b57029..aa0d254 100644
--- a/tools/request.js
+++ b/tools/request.js
@@ -14,8 +14,8 @@
 // limitations under the License.
 
 const BASE_URL = {
-    "chat": `http://${process.env.INFERENCE_ENG || 'llamacpp'}:${process.env.INFERENCE_ENG_PORT || 8080}`,
-    "rag": `http://${process.env.EMBEDDING_ENG || 'embedding_eng'}:${process.env.EMBEDDING_ENG_PORT || 8081}`
+    "chat": `http://${process.env.INFERENCE_ENG || 'llamacpp'}:${process.env.ENG_ACCESS_PORT || 8080}`,
+    "embedding": `http://${process.env.EMBEDDING_ENG || 'embedding_eng'}:${process.env.ENG_ACCESS_PORT || 8080}`
 }
 
 const default_options = {
@@ -26,12 +26,13 @@ const default_options = {
 
 /**
  * @typedef RequestOptions
- * @property {"rag"|"chat"} eng select between rag engine or chat engine, default value is `chat`
+ * @property {"embedding"|"chat"} eng select between embedding engine or chat engine, default value is `chat`
  * @property {Boolean} getJSON  
  *  * If set to `true`, this function will return the result of `await(await fetch(...)).json();`
  *  and include an attribute `http_error: true` if there's any http error occurs during fetch().  
  *  * If set to `false`, this function will return the result of `await fetch(...);`, without error handling
  *  * default value is `true`;
+ * @property {String} URL specify the url of request instead of generated use base route
  */
 
 /**
@@ -45,7 +46,7 @@ export default async function request(url, options={}, request_options={}) {
     const eng = request_options.eng || "chat";
     const getJSON = Object.hasOwn(request_options, 'getJSON') ? request_options.getJSON : true
     
-    url = `${BASE_URL[eng]}${url[0]!=='/' && '/'}${url}`;
+    url = request_options.URL || `${BASE_URL[eng]}${url[0]!=='/' && '/'}${url}`;
 
     options = {
         ...default_options,