diff --git a/package.json b/package.json
index 5586553..aa3a5a3 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "dev": "vite",
     "clean": "rimraf dist",
     "build": "npm run clean && vite build",
-    "deploy:nas": "node -e 'const isWin = process.platform === \"win32\"; const src = \"dist\"; const dstWin = \"Z:\\\\docker\\\\webpage\\\\frontend\\\\\"; const dstMac = \"/Volumes/gahusb.synology.me/docker/webpage/frontend/\"; const dst = isWin ? dstWin : dstMac; const fs = require(\"fs\"); if (!fs.existsSync(src)) { console.error(\"dist not found. Run build first.\"); process.exit(1); } if (!fs.existsSync(dst)) { console.error(\"NAS path not found. Check mount: \" + dst); process.exit(1); } if (isWin) { const cmd = \"powershell -NoProfile -ExecutionPolicy Bypass -Command \\\"$ErrorActionPreference=\\\"Stop\\\"; $src=\\\"dist\\\"; $dst=\\\"Z:\\\\docker\\\\webpage\\\\frontend\\\\\\\"; if(!(Test-Path $src)){ throw \\\"dist not found. Run build first.\\\" }; if(!(Test-Path $dst)){ throw \\\"NAS drive not found. Check Z: mapping.\\\" }; robocopy $src $dst /MIR /R:1 /W:1 /E /NFL /NDL /NP; if($LASTEXITCODE -ge 8){ exit $LASTEXITCODE }\\\"\"; require(\"child_process\").execSync(cmd); } else { require(\"child_process\").execSync(\"rsync -av --delete --delete-delay --inplace dist/ \" + dst); }'",
+    "deploy:nas": "node scripts/deploy-nas.cjs",
     "release:nas": "npm run build && npm run deploy:nas",
     "lint": "eslint .",
     "preview": "vite preview"
diff --git a/public/lotto-api.md b/public/lotto-api.md
new file mode 100644
index 0000000..1669c10
--- /dev/null
+++ b/public/lotto-api.md
@@ -0,0 +1,63 @@
+# Lotto API 스펙 (프론트 참고)
+
+## 추천 1개 생성
+
+요청:
+
+GET /api/lotto/recommend?recent_window=200&recent_weight=2.0&avoid_recent_k=5&sum_min=120&sum_max=180&max_overlap_latest=1
+
+응답 핵심:
+
+{
+  "id": 123,
+  "saved": true,
+  "deduped": false,
+  "numbers": [1,2,3,4,5,6],
+  "based_on_latest_draw": 1145,
+  "explain": {...},
+  "metrics": {...},
+  "recent_overlap": {...},
+  "params": {...}
+}
+
+## 히스토리 목록 (페이지/필터/검색)
+
+기본: GET /api/history?limit=30&offset=0
+즐겨찾기만: GET /api/history?favorite=true
+태그 필터: GET /api/history?tag=jeju
+메모 검색: GET /api/history?q=맛집
+정렬: GET /api/history?sort=favorite_desc
+
+응답:
+
+{
+  "items": [
+    {
+      "id": 123,
+      "created_at": "...",
+      "numbers": [...],
+      "params": {...},
+      "based_on_draw": 1145,
+      "favorite": false,
+      "note": null,
+      "tags": [],
+      "metrics": {...},
+      "recent_overlap": {...}
+    }
+  ],
+  "limit": 30,
+  "offset": 0,
+  "filters": {...}
+}
+
+## 히스토리 수정 (즐겨찾기/메모/태그)
+
+요청:
+
+PATCH /api/history/{id}
+
+{
+  "favorite": true,
+  "note": "이번주는 이 조합",
+  "tags": ["jeju","safe"]
+}
diff --git a/scripts/deploy-nas.cjs b/scripts/deploy-nas.cjs
new file mode 100644
index 0000000..830d329
--- /dev/null
+++ b/scripts/deploy-nas.cjs
@@ -0,0 +1,27 @@
+const { execSync } = require("child_process");
+const fs = require("fs");
+
+const isWin = process.platform === "win32";
+const src = "dist";
+const dstWin = "Z:\\docker\\webpage\\frontend\\";
+const dstMac = "/Volumes/gahusb.synology.me/docker/webpage/frontend/";
+const dst = isWin ? dstWin : dstMac;
+
+if (!fs.existsSync(src)) {
+  console.error("dist not found. Run build first.");
+  process.exit(1);
+}
+if (!fs.existsSync(dst)) {
+  console.error("NAS path not found. Check mount: " + dst);
+  process.exit(1);
+}
+
+if (isWin) {
+  const cmd =
+    'powershell -NoProfile -ExecutionPolicy Bypass -Command "$ErrorActionPreference=\\"Stop\\"; $src=\\"dist\\"; $dst=\\"Z:\\\\docker\\\\webpage\\\\frontend\\\\\\"; if(!(Test-Path $src)){ throw \\"dist not found. Run build first.\\" }; if(!(Test-Path $dst)){ throw \\"NAS drive not found. Check Z: mapping.\\" }; $log = Join-Path (Get-Location) \\"robocopy.log\\"; robocopy $src $dst /MIR /R:1 /W:1 /E /NFL /NDL /NP /V /TEE /LOG:$log; $rc = $LASTEXITCODE; if($rc -ge 8){ Write-Host \\"robocopy failed with code $rc. See $log\\"; exit $rc } else { exit 0 }"';
+  execSync(cmd, { stdio: "inherit" });
+} else {
+  execSync(`rsync -av --delete --delete-delay --inplace ${src}/ ${dst}`, {
+    stdio: "inherit",
+  });
+}
diff --git a/src/pages/lotto/Functions.jsx b/src/pages/lotto/Functions.jsx
index 1122ba8..41ac9a6 100644
--- a/src/pages/lotto/Functions.jsx
+++ b/src/pages/lotto/Functions.jsx
@@ -360,7 +360,10 @@ export default function Functions() {
             </section>
 
             <footer className="lotto-foot">
-                backend: FastAPI / nginx proxy / DB: sqlite
+                backend: FastAPI / nginx proxy / DB: sqlite •{' '}
+                <a className="lotto-foot__link" href="/lotto-api.md" download>
+                    API 스펙 다운로드
+                </a>
             </footer>
         </div>
     );
diff --git a/src/pages/lotto/Lotto.css b/src/pages/lotto/Lotto.css
index 72582cc..c80e3fe 100644
--- a/src/pages/lotto/Lotto.css
+++ b/src/pages/lotto/Lotto.css
@@ -322,6 +322,10 @@
     font-size: 12px;
 }
 
+.lotto-foot__link {
+    color: var(--accent);
+}
+
 .button.danger {
     border-color: rgba(247, 116, 125, 0.5);
     color: #fbc4c8;