diff --git a/README.md b/README.md
index 3b67831e..e4e758e8 100644
--- a/README.md
+++ b/README.md
@@ -193,7 +193,7 @@ MCP Server 需要配置 API 密钥才能正常工作。主要的 MCP 专属配
 
 ```bash
 # MCP 服务器配置
-MCP_DEFAULT_MODEL_PROVIDER=openai  # 可选值：openai, gemini, deepseek, siliconflow, zhipu, custom
+MCP_DEFAULT_MODEL_PROVIDER=openai  # 可选值：openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom
 MCP_LOG_LEVEL=info                 # 日志级别
 ```
 
@@ -469,4 +469,4 @@ xattr -rd com.apple.quarantine ~/Downloads/PromptOptimizer-*.dmg
 
 - 提交 Issue
 - 发起 Pull Request
-- 加入讨论组
\ No newline at end of file
+- 加入讨论组
diff --git a/README_EN.md b/README_EN.md
index fb1094ba..eec53db6 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -196,7 +196,7 @@ MCP Server requires API key configuration to function properly. Main MCP-specifi
 
 ```bash
 # MCP Server Configuration
-MCP_DEFAULT_MODEL_PROVIDER=openai  # Options: openai, gemini, deepseek, siliconflow, zhipu, custom
+MCP_DEFAULT_MODEL_PROVIDER=openai  # Options: openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom
 MCP_LOG_LEVEL=info                 # Log level
 ```
 
@@ -471,4 +471,4 @@ If this project is helpful to you, please consider giving it a Star ⭐️
 
 - Submit an Issue
 - Create a Pull Request
-- Join the discussion group 
\ No newline at end of file
+- Join the discussion group 
diff --git a/docs/user/mcp-server.md b/docs/user/mcp-server.md
index c0950170..1a0a2623 100644
--- a/docs/user/mcp-server.md
+++ b/docs/user/mcp-server.md
@@ -72,7 +72,7 @@ VITE_CUSTOM_API_MODEL=qwen2.5:0.5b
 
 ```bash
 # 首选模型提供商（当配置了多个 API 密钥时）
-# 可选值：openai, gemini, deepseek, siliconflow, zhipu, custom
+# 可选值：openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom
 MCP_DEFAULT_MODEL_PROVIDER=openai
 
 # 日志级别（可选，默认 debug）
diff --git a/docs/user/mcp-server_en.md b/docs/user/mcp-server_en.md
index 35c2b915..ca3f5611 100644
--- a/docs/user/mcp-server_en.md
+++ b/docs/user/mcp-server_en.md
@@ -72,7 +72,7 @@ VITE_CUSTOM_API_MODEL=qwen2.5:0.5b
 
 ```bash
 # Preferred model provider (when multiple API keys are configured)
-# Options: openai, gemini, deepseek, siliconflow, zhipu, custom
+# Options: openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom
 MCP_DEFAULT_MODEL_PROVIDER=openai
 
 # Log level (optional, default: debug)
diff --git a/env.local.example b/env.local.example
index dc20979b..0ba57415 100644
--- a/env.local.example
+++ b/env.local.example
@@ -11,6 +11,9 @@
 # Google Gemini API 配置
 # VITE_GEMINI_API_KEY=your-gemini-api-key-here
 
+# Anthropic Claude API 配置
+# VITE_ANTHROPIC_API_KEY=your-anthropic-api-key-here
+
 # ===== 图像生成 API 密钥配置 =====
 # Gemini 图像生成复用 VITE_GEMINI_API_KEY（无需单独配置）
 # Seedream (Doubao) / 火山方舟 ARK API Key（任选其一变量，优先级从上到下）
@@ -70,7 +73,7 @@
 # 以下配置仅在使用 MCP 服务器时需要
 
 # 首选模型提供商（当配置了多个 API 密钥时）
-# 可选值：openai, gemini, deepseek, siliconflow, zhipu, custom, custom_<suffix>
+# 可选值：openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom, custom_<suffix>
 # 注意：必须与上面配置的 API 密钥对应
 # 示例：如果配置了 VITE_CUSTOM_API_KEY_qwen3，可以使用 custom_qwen3
 # MCP_DEFAULT_MODEL_PROVIDER=openai
diff --git a/mkdocs/docs/zh/user/mcp-server.md b/mkdocs/docs/zh/user/mcp-server.md
index 24393046..8b4d6972 100644
--- a/mkdocs/docs/zh/user/mcp-server.md
+++ b/mkdocs/docs/zh/user/mcp-server.md
@@ -76,7 +76,7 @@ VITE_CUSTOM_API_MODEL=qwen2.5:0.5b
 
 ```bash
 # 首选模型提供商（当配置了多个 API 密钥时）
-# 可选值：openai, gemini, deepseek, siliconflow, zhipu, custom
+# 可选值：openai, gemini, anthropic, deepseek, siliconflow, zhipu, dashscope, openrouter, modelscope, custom
 MCP_DEFAULT_MODEL_PROVIDER=openai
 
 # 日志级别（可选，默认 debug）
@@ -190,4 +190,3 @@ MCP_DEFAULT_MODEL_PROVIDER=openai  # 不是 OpenAI
 2. 检查 URL 是否正确
 3. 确认防火墙设置
 4. 查看 Claude Desktop 日志
-
diff --git a/packages/core/src/services/model/defaults.ts b/packages/core/src/services/model/defaults.ts
index 35cac51e..8787a9f0 100644
--- a/packages/core/src/services/model/defaults.ts
+++ b/packages/core/src/services/model/defaults.ts
@@ -11,6 +11,7 @@ import { generateDynamicModels } from './model-utils';
 const PROVIDER_ENV_KEYS = {
   openai: 'VITE_OPENAI_API_KEY',
   gemini: 'VITE_GEMINI_API_KEY',
+  anthropic: 'VITE_ANTHROPIC_API_KEY',
   deepseek: 'VITE_DEEPSEEK_API_KEY',
   siliconflow: 'VITE_SILICONFLOW_API_KEY',
   zhipu: 'VITE_ZHIPU_API_KEY',
diff --git a/packages/core/tests/unit/model/defaults.test.ts b/packages/core/tests/unit/model/defaults.test.ts
new file mode 100644
index 00000000..2e39930d
--- /dev/null
+++ b/packages/core/tests/unit/model/defaults.test.ts
@@ -0,0 +1,40 @@
+import { getBuiltinModelIds, getDefaultTextModels } from '../../../src/services/model/defaults'
+import { afterAll, beforeEach, describe, expect, it } from 'vitest'
+
+describe('model defaults provider env mapping', () => {
+  const originalAnthropicApiKey = process.env.VITE_ANTHROPIC_API_KEY
+
+  beforeEach(() => {
+    delete process.env.VITE_ANTHROPIC_API_KEY
+  })
+
+  afterAll(() => {
+    if (originalAnthropicApiKey === undefined) {
+      delete process.env.VITE_ANTHROPIC_API_KEY
+      return
+    }
+    process.env.VITE_ANTHROPIC_API_KEY = originalAnthropicApiKey
+  })
+
+  it('should include anthropic in builtin model ids', () => {
+    const builtinModelIds = getBuiltinModelIds()
+    expect(builtinModelIds).toContain('anthropic')
+  })
+
+  it('should include anthropic config and keep it disabled when api key is empty', () => {
+    const models = getDefaultTextModels()
+
+    expect(models.anthropic).toBeDefined()
+    expect(models.anthropic.providerMeta.id).toBe('anthropic')
+    expect(models.anthropic.enabled).toBe(false)
+  })
+
+  it('should enable anthropic when VITE_ANTHROPIC_API_KEY is provided', () => {
+    process.env.VITE_ANTHROPIC_API_KEY = 'test-anthropic-key'
+
+    const models = getDefaultTextModels()
+
+    expect(models.anthropic.enabled).toBe(true)
+    expect(models.anthropic.connectionConfig.apiKey).toBe('test-anthropic-key')
+  })
+})
diff --git a/packages/desktop/main.js b/packages/desktop/main.js
index 2c29b926..d288f9ac 100644
--- a/packages/desktop/main.js
+++ b/packages/desktop/main.js
@@ -537,9 +537,13 @@ async function initializeServices() {
     const staticEnvVars = [
       'VITE_OPENAI_API_KEY',
       'VITE_GEMINI_API_KEY',
+      'VITE_ANTHROPIC_API_KEY',
       'VITE_DEEPSEEK_API_KEY',
       'VITE_SILICONFLOW_API_KEY',
       'VITE_ZHIPU_API_KEY',
+      'VITE_DASHSCOPE_API_KEY',
+      'VITE_OPENROUTER_API_KEY',
+      'VITE_MODELSCOPE_API_KEY',
       'VITE_CUSTOM_API_KEY',
       'VITE_CUSTOM_API_BASE_URL',
       'VITE_CUSTOM_API_MODEL'
diff --git a/packages/mcp-server/src/config/models.ts b/packages/mcp-server/src/config/models.ts
index e5d45050..2b0e62a0 100644
--- a/packages/mcp-server/src/config/models.ts
+++ b/packages/mcp-server/src/config/models.ts
@@ -27,9 +27,15 @@ export async function setupDefaultModel(
 
   // 1. 如果指定了 preferredProvider，尝试匹配
   if (preferredProvider) {
+    const normalizedPreferred = preferredProvider.toLowerCase();
+
     selectedModel = availableModels.find(([key, config]) =>
-      config.provider === preferredProvider.toLowerCase() ||
-      config.name.toLowerCase().includes(preferredProvider.toLowerCase())
+      // 直接匹配模型 key（支持 custom_<suffix>）
+      key.toLowerCase() === normalizedPreferred ||
+      // 匹配 provider id
+      String(config.providerMeta?.id || config.modelMeta?.providerId || config.provider || '').toLowerCase() === normalizedPreferred ||
+      // 兼容通过名称模糊匹配
+      String(config.name || '').toLowerCase().includes(normalizedPreferred)
     );
   }