diff --git a/src/generator/dts/index.ts b/src/generator/dts/index.ts
index 4678e24..4fa0a72 100644
--- a/src/generator/dts/index.ts
+++ b/src/generator/dts/index.ts
@@ -19,20 +19,19 @@ export const run: Runner = async (config) => {
   const distDir = 'dts'
   mkdirSync(distDir, { recursive: true })
 
-  let connection: Record<string, string | undefined> = { 'base-url': `https://${context.host}` }
+  const connection: Record<string, string | undefined> = { 'base-url': `https://${context.host}` }
   if (context.oauth) {
-    connection = {
-      ...connection,
-      'oauth-token': await getOauthToken(context.host, {} /* context.agentOptions */),
-    }
+    connection['oauth-token'] = await getOauthToken({
+      domain: context.host,
+      scope: typeof context.oauth === 'object' ? context.oauth.scope : undefined,
+      proxy: context.proxy,
+      pfx: context.pfx,
+    })
   } else {
-    connection = {
-      ...connection,
-      'username': process.env.GOQOO_USERNAME,
-      'password': process.env.GOQOO_PASSWORD,
-      'basic-auth-username': process.env.GOQOO_BASICAUTH_USERNAME,
-      'basic-auth-password': process.env.GOQOO_BASICAUTH_PASSWORD,
-    }
+    connection['username'] = process.env.GOQOO_USERNAME
+    connection['password'] = process.env.GOQOO_PASSWORD
+    connection['basic-auth-username'] = process.env.GOQOO_BASICAUTH_USERNAME
+    connection['basic-auth-password'] = process.env.GOQOO_BASICAUTH_PASSWORD
   }
 
   const skipApps = dtsGen?.skip || []
diff --git a/src/lib/types.ts b/src/lib/types.ts
index b1aa75f..347d847 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -1,8 +1,12 @@
+import type { ProxyOption, PfxOption } from 'gyuma'
+
 type _Context<Env> = {
   env: Env
   host: string
   appId: Record<string, number>
-  oauth?: boolean
+  oauth?: boolean | { scope: string }
+  proxy?: ProxyOption
+  pfx?: PfxOption
 }
 
 export type Config<Env extends string = string, Context extends _Context<Env> = _Context<Env>> = {
diff --git a/src/oauth.ts b/src/oauth.ts
index 934099a..f26e5c0 100644
--- a/src/oauth.ts
+++ b/src/oauth.ts
@@ -1,18 +1,27 @@
-import gyuma from 'gyuma'
+import netrc from 'netrc-parser'
+import { gyuma, PfxOption, ProxyOption } from 'gyuma'
 
-type ProxyOption =
-  | string
-  | {
-      protocol: string
-      auth: string
-      hostname: string
-      port: number
+export const getOauthToken = async ({
+  domain,
+  scope = 'k:app_settings:read',
+  proxy,
+  pfx,
+}: {
+  domain: string
+  scope?: string
+  proxy?: ProxyOption
+  pfx?: PfxOption
+}): Promise<string> => {
+  // プロキシサーバーの認証情報がnetrcにある場合は読み取る
+  // 認証はオプションなので、認証情報が見つからなくても標準入力はさせない
+  if (proxy instanceof Object && !proxy.auth) {
+    netrc.loadSync()
+    const netrcProxyProps = netrc.machines[proxy.hostname]
+    if (netrcProxyProps) {
+      proxy.auth = `${netrcProxyProps.login}:${netrcProxyProps.password}`
     }
-type PfxOption = { filepath: string; password: string }
-type AgentOptions = { proxy?: ProxyOption; pfx?: PfxOption }
+  }
 
-export const getOauthToken = async (domain: string, agentOptions: AgentOptions) => {
-  const scope = 'k:app_settings:read'
-  const token = await gyuma({ domain, scope, ...agentOptions }, true)
+  const token = await gyuma({ domain, scope, proxy, pfx }, true)
   return token
 }