diff --git a/src/cli/handlers/auth.ts b/src/cli/handlers/auth.ts
index 66d2eaa15..21a2cd2e2 100644
--- a/src/cli/handlers/auth.ts
+++ b/src/cli/handlers/auth.ts
@@ -142,8 +142,6 @@ async function coStrictLogin(): Promise<void> {
 
     const expiryDate = extractExpiryFromJWT(tokens.access_token)
     await saveCoStrictCredentials({
-      id: 'csc',
-      name: 'CSC Auth',
       access_token: tokens.access_token,
       refresh_token: tokens.refresh_token,
       state,
diff --git a/src/commands/model/model.tsx b/src/commands/model/model.tsx
index 942f62533..636075dc5 100644
--- a/src/commands/model/model.tsx
+++ b/src/commands/model/model.tsx
@@ -92,8 +92,6 @@ function ModelPickerWrapper({
           // 保存凭证
           const expiryDate = extractExpiryFromJWT(tokens.access_token)
           await saveCoStrictCredentials({
-            id: 'csc',
-            name: 'CSC Auth',
             access_token: tokens.access_token,
             refresh_token: tokens.refresh_token,
             state,
diff --git a/src/components/ConsoleOAuthFlow.tsx b/src/components/ConsoleOAuthFlow.tsx
index 0d914873e..ca6ebc0a2 100644
--- a/src/components/ConsoleOAuthFlow.tsx
+++ b/src/components/ConsoleOAuthFlow.tsx
@@ -540,8 +540,6 @@ function OAuthStatusMessage({
                       // 保存凭证
                       const expiryDate = extractExpiryFromJWT(tokens.access_token)
                       await saveCoStrictCredentials({
-                        id: 'csc',
-                        name: 'CSC Auth',
                         access_token: tokens.access_token,
                         refresh_token: tokens.refresh_token,
                         state,
diff --git a/src/costrict/provider/auth.ts b/src/costrict/provider/auth.ts
index 9344db0b4..53bcb8b23 100644
--- a/src/costrict/provider/auth.ts
+++ b/src/costrict/provider/auth.ts
@@ -174,8 +174,6 @@ export async function loginCoStrict(
 
   const expiryDate = extractExpiryFromJWT(tokens.access_token)
   const credentials: CoStrictCredentials = {
-    id: 'csc',
-    name: 'CSC Auth',
     access_token: tokens.access_token,
     refresh_token: tokens.refresh_token,
     state,
diff --git a/src/costrict/provider/credentials.ts b/src/costrict/provider/credentials.ts
index 88e4793e3..6a8544793 100644
--- a/src/costrict/provider/credentials.ts
+++ b/src/costrict/provider/credentials.ts
@@ -6,14 +6,12 @@
 import { promises as fs } from 'node:fs'
 import { join } from 'node:path'
 import { createHash } from 'node:crypto'
-import { getClaudeConfigHomeDir } from '../../utils/envUtils.js'
+import { homedir } from 'node:os'
 
 /**
- * CoStrict 凭证格式 (与 IDE 插件兼容)
+ * CoStrict 凭证格式
  */
 export interface CoStrictCredentials {
-  id: string // 标识符
-  name: string // 显示名称
   access_token: string // OAuth 访问令牌
   refresh_token?: string // OAuth 刷新令牌 (可选)
   state?: string // OAuth 状态标识 (可选)
@@ -24,11 +22,13 @@ export interface CoStrictCredentials {
   expired_at?: string // Token 过期时间 (ISO 8601)
 }
 
+const COSTRICT_CONFIG_DIR = join(homedir(), '.costrict', 'share')
+
 /**
- * 获取 ~/.claude/csc-auth.json 路径
+ * 获取 ~/.costrict/share/auth.json 路径
  */
 export function getCoStrictCredentialsPath(): string {
-  return join(getClaudeConfigHomeDir(), 'csc-auth.json')
+  return join(COSTRICT_CONFIG_DIR, 'auth.json')
 }
 
 /**
@@ -68,7 +68,7 @@ export async function saveCoStrictCredentials(
   credentials: CoStrictCredentials,
 ): Promise<void> {
   const filepath = getCoStrictCredentialsPath()
-  await fs.mkdir(getClaudeConfigHomeDir(), { recursive: true })
+  await fs.mkdir(COSTRICT_CONFIG_DIR, { recursive: true })
   await fs.writeFile(filepath, JSON.stringify(credentials, null, 2) + '\n', {
     encoding: 'utf-8',
     mode: 0o600,