diff --git a/@sammo/api_def/package.json b/@sammo/api_def/package.json
index d49ada0..ee3ef5d 100644
--- a/@sammo/api_def/package.json
+++ b/@sammo/api_def/package.json
@@ -5,6 +5,7 @@
   "main": "dist/index.js",
   "exports": {
     ".": "./dist/index.js",
+    "./gateway": "./dist/gateway.js",
     "./def": "./dist/def/index.js"
   },
   "scripts": {
diff --git a/@sammo/api_def/src/gateway.ts b/@sammo/api_def/src/gateway.ts
new file mode 100644
index 0000000..d6d87ec
--- /dev/null
+++ b/@sammo/api_def/src/gateway.ts
@@ -0,0 +1,72 @@
+import { GET, POST, type DefAPINamespace } from "@strpc/def";
+
+//굳이 할 필요는 없지만, d.ts가 깔끔해짐
+import type {
+	InvalidResponse, ValidResponse
+} from "@strpc/def";
+import type {
+	ArgDeleteAPI,
+	ArgGetAPI,
+	ArgHeadAPI,
+	ArgPatchAPI,
+	ArgPostAPI,
+	ArgPutAPI,
+	EmptyDeleteAPI,
+	EmptyGetAPI,
+	EmptyHeadAPI,
+	EmptyPatchAPI,
+	EmptyPostAPI,
+	EmptyPutAPI,
+} from "@strpc/def/types";
+
+
+export type LoginResponse = {
+    result: true,
+    nextToken: [number, string] | undefined,
+}
+
+export type LoginFailed = {
+    result: false,
+    reqOTP: boolean,
+    reason: string,
+}
+
+
+export type AutoLoginNonceResponse = {
+    result: true,
+    loginNonce: string,
+};
+
+export type AutoLoginResponse = {
+    result: true,
+    nextToken: [number, string] | undefined,
+}
+
+
+export type AutoLoginFailed = {
+    result: false,
+    silent: boolean,
+    reason: string,
+}
+
+/** @internal */
+export const structure = {
+    Login: {
+        LoginByID: POST<{
+            id: string,
+            password: string,
+        }, LoginResponse, LoginFailed>(),
+        LoginByToken: POST<{
+            hashedToken: string,
+            token_id: number,
+        }, AutoLoginResponse, AutoLoginFailed>(),
+        ReqNonce: GET<AutoLoginNonceResponse, AutoLoginFailed>(),
+        test: GET<{result: true, hello:'world'}>(),
+    },
+    GetGameLoginToken: GET<{
+        result: true,
+        gameLoginToken: string,
+        userID: number,
+    }>(),
+
+} satisfies DefAPINamespace;
\ No newline at end of file
diff --git a/@sammo/api_def/src/index.ts b/@sammo/api_def/src/index.ts
index 1994fbe..cc4d393 100644
--- a/@sammo/api_def/src/index.ts
+++ b/@sammo/api_def/src/index.ts
@@ -22,10 +22,6 @@ import type {
 } from "@strpc/def/types";
 import { GET, POST } from '@strpc/def';
 
-import type { Base64String, WrappedBuffer } from "@sammo/util";
-import type { ECDSASignatureBSON, ECDSASignatureJSON, ECDSASignatureRaw, ECDSA_P384_VerifyKey, ECDSA_PKCS8_P384_SignKey } from "@sammo/crypto/RawTypes";
-import type { PEMString } from "@sammo/crypto";
-
 export type {
 	InferResponse,
 	InferError,
diff --git a/package.json b/package.json
index b9c6f0e..6f97327 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,8 @@
     "tslib": "^2.6.1",
     "vue": "^3.3.4",
     "vue-router": "^4.2.4",
-    "zod": "^3.22.1"
+    "zod": "^3.22.1",
+    "@sammo/api_def": "workspace:^"
   },
   "devDependencies": {
     "@rushstack/eslint-patch": "^1.3.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 712c6a1..f6f9853 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -14,6 +14,9 @@ importers:
       '@popperjs/core':
         specifier: ^2.11.8
         version: 2.11.8
+      '@sammo/api_def':
+        specifier: workspace:^
+        version: link:@sammo/api_def
       async-lock:
         specifier: ^1.4.0
         version: 1.4.0