feat: add proxy configuration support for STDIO servers on Linux and macOS

docs/configuration/mcp-settings.mdx

@@ -259,6 +259,92 @@ MCPHub supports environment variable substitution using `${VAR_NAME}` syntax:
 }
 ```
 
+### Proxy Configuration (proxychains4)
+
+MCPHub supports routing STDIO server network traffic through a proxy using **proxychains4**. This feature is available on **Linux and macOS only** (Windows is not supported).
+
+<Note>
+To use this feature, you must have `proxychains4` installed on your system:
+- **Debian/Ubuntu**: `apt install proxychains4`
+- **macOS**: `brew install proxychains-ng`
+- **Arch Linux**: `pacman -S proxychains-ng`
+</Note>
+
+#### Basic Proxy Configuration
+
+```json
+{
+  "mcpServers": {
+    "fetch-via-proxy": {
+      "command": "uvx",
+      "args": ["mcp-server-fetch"],
+      "proxy": {
+        "enabled": true,
+        "type": "socks5",
+        "host": "127.0.0.1",
+        "port": 1080
+      }
+    }
+  }
+}
+```
+
+#### Proxy Configuration Options
+
+| Field        | Type    | Default   | Description                                      |
+| ------------ | ------- | --------- | ------------------------------------------------ |
+| `enabled`    | boolean | `false`   | Enable/disable proxy routing                     |
+| `type`       | string  | `socks5`  | Proxy protocol: `socks4`, `socks5`, or `http`    |
+| `host`       | string  | -         | Proxy server hostname or IP address              |
+| `port`       | number  | -         | Proxy server port                                |
+| `username`   | string  | -         | Proxy authentication username (optional)         |
+| `password`   | string  | -         | Proxy authentication password (optional)         |
+| `configPath` | string  | -         | Path to custom proxychains4 config file          |
+
+#### Proxy with Authentication
+
+```json
+{
+  "mcpServers": {
+    "secure-server": {
+      "command": "npx",
+      "args": ["-y", "@example/mcp-server"],
+      "proxy": {
+        "enabled": true,
+        "type": "http",
+        "host": "proxy.example.com",
+        "port": 8080,
+        "username": "${PROXY_USER}",
+        "password": "${PROXY_PASSWORD}"
+      }
+    }
+  }
+}
+```
+
+#### Using Custom proxychains4 Configuration
+
+For advanced use cases, you can provide your own proxychains4 configuration file:
+
+```json
+{
+  "mcpServers": {
+    "custom-proxy-server": {
+      "command": "python",
+      "args": ["-m", "custom_mcp_server"],
+      "proxy": {
+        "enabled": true,
+        "configPath": "/etc/proxychains4/custom.conf"
+      }
+    }
+  }
+}
+```
+
+<Tip>
+When `configPath` is specified, all other proxy settings (`type`, `host`, `port`, etc.) are ignored, and the custom configuration file is used directly.
+</Tip>
+
 {/* ### Custom Server Scripts
 
 #### Local Python Server

examples/mcp_settings_with_env_vars.json

@@ -31,6 +31,47 @@
         "DATABASE_URL": "${DATABASE_URL}"
       }
     },
+    "example-stdio-with-proxy": {
+      "type": "stdio",
+      "command": "uvx",
+      "args": [
+        "mcp-server-fetch"
+      ],
+      "proxy": {
+        "enabled": true,
+        "type": "socks5",
+        "host": "${PROXY_HOST}",
+        "port": 1080
+      }
+    },
+    "example-stdio-with-auth-proxy": {
+      "type": "stdio",
+      "command": "npx",
+      "args": [
+        "-y",
+        "@example/mcp-server"
+      ],
+      "proxy": {
+        "enabled": true,
+        "type": "http",
+        "host": "${HTTP_PROXY_HOST}",
+        "port": 8080,
+        "username": "${PROXY_USERNAME}",
+        "password": "${PROXY_PASSWORD}"
+      }
+    },
+    "example-stdio-with-custom-proxy-config": {
+      "type": "stdio",
+      "command": "python",
+      "args": [
+        "-m",
+        "custom_mcp_server"
+      ],
+      "proxy": {
+        "enabled": true,
+        "configPath": "/etc/proxychains4/custom.conf"
+      }
+    },
     "example-openapi-server": {
       "type": "openapi",
       "openapi": {

frontend/src/types/index.ts

@@ -105,6 +105,17 @@ export interface Prompt {
   enabled?: boolean;
 }
 
+// Proxychains4 configuration for STDIO servers (Linux/macOS only)
+export interface ProxychainsConfig {
+  enabled?: boolean; // Enable/disable proxychains4 proxy routing
+  type?: 'socks4' | 'socks5' | 'http'; // Proxy protocol type
+  host?: string; // Proxy server hostname or IP address
+  port?: number; // Proxy server port
+  username?: string; // Proxy authentication username (optional)
+  password?: string; // Proxy authentication password (optional)
+  configPath?: string; // Path to custom proxychains4 configuration file (optional)
+}
+
 // Server config types
 export interface ServerConfig {
   type?: 'stdio' | 'sse' | 'streamable-http' | 'openapi';
@@ -123,6 +134,8 @@ export interface ServerConfig {
     resetTimeoutOnProgress?: boolean; // Reset timeout on progress notifications
     maxTotalTimeout?: number; // Maximum total timeout in milliseconds
   }; // MCP request options configuration
+  // Proxychains4 proxy configuration for STDIO servers (Linux/macOS only, Windows not supported)
+  proxy?: ProxychainsConfig;
   // OAuth authentication for upstream MCP servers
   oauth?: {
     clientId?: string; // OAuth client ID

src/dao/DaoFactory.ts

@@ -6,7 +6,6 @@ import { UserConfigDao, UserConfigDaoImpl } from './UserConfigDao.js';
 import { OAuthClientDao, OAuthClientDaoImpl } from './OAuthClientDao.js';
 import { OAuthTokenDao, OAuthTokenDaoImpl } from './OAuthTokenDao.js';
 import { BearerKeyDao, BearerKeyDaoImpl } from './BearerKeyDao.js';
-import { ToolCallActivityDao } from './ToolCallActivityDao.js';
 
 /**
  * DAO Factory interface for creating DAO instances
@@ -20,7 +19,6 @@ export interface DaoFactory {
   getOAuthClientDao(): OAuthClientDao;
   getOAuthTokenDao(): OAuthTokenDao;
   getBearerKeyDao(): BearerKeyDao;
-  getToolCallActivityDao(): ToolCallActivityDao | null; // Only available in DB mode
 }
 
 /**
@@ -108,11 +106,6 @@ export class JsonFileDaoFactory implements DaoFactory {
     return this.bearerKeyDao;
   }
 
-  getToolCallActivityDao(): ToolCallActivityDao | null {
-    // Tool call activity is only available in DB mode
-    return null;
-  }
-
   /**
    * Reset all cached DAO instances (useful for testing)
    */
@@ -201,14 +194,3 @@ export function getOAuthTokenDao(): OAuthTokenDao {
 export function getBearerKeyDao(): BearerKeyDao {
   return getDaoFactory().getBearerKeyDao();
 }
-
-export function getToolCallActivityDao(): ToolCallActivityDao | null {
-  return getDaoFactory().getToolCallActivityDao();
-}
-
-/**
- * Check if the application is using database mode
- */
-export function isUsingDatabase(): boolean {
-  return getDaoFactory().getToolCallActivityDao() !== null;
-}

src/dao/DatabaseDaoFactory.ts

@@ -8,7 +8,6 @@ import {
   OAuthClientDao,
   OAuthTokenDao,
   BearerKeyDao,
-  ToolCallActivityDao,
 } from './index.js';
 import { UserDaoDbImpl } from './UserDaoDbImpl.js';
 import { ServerDaoDbImpl } from './ServerDaoDbImpl.js';
@@ -18,7 +17,6 @@ import { UserConfigDaoDbImpl } from './UserConfigDaoDbImpl.js';
 import { OAuthClientDaoDbImpl } from './OAuthClientDaoDbImpl.js';
 import { OAuthTokenDaoDbImpl } from './OAuthTokenDaoDbImpl.js';
 import { BearerKeyDaoDbImpl } from './BearerKeyDaoDbImpl.js';
-import { ToolCallActivityDaoDbImpl } from './ToolCallActivityDao.js';
 
 /**
  * Database-backed DAO factory implementation
@@ -34,7 +32,6 @@ export class DatabaseDaoFactory implements DaoFactory {
   private oauthClientDao: OAuthClientDao | null = null;
   private oauthTokenDao: OAuthTokenDao | null = null;
   private bearerKeyDao: BearerKeyDao | null = null;
-  private toolCallActivityDao: ToolCallActivityDao | null = null;
 
   /**
    * Get singleton instance
@@ -106,13 +103,6 @@ export class DatabaseDaoFactory implements DaoFactory {
     return this.bearerKeyDao!;
   }
 
-  getToolCallActivityDao(): ToolCallActivityDao | null {
-    if (!this.toolCallActivityDao) {
-      this.toolCallActivityDao = new ToolCallActivityDaoDbImpl();
-    }
-    return this.toolCallActivityDao;
-  }
-
   /**
    * Reset all cached DAO instances (useful for testing)
    */
@@ -125,6 +115,5 @@ export class DatabaseDaoFactory implements DaoFactory {
     this.oauthClientDao = null;
     this.oauthTokenDao = null;
     this.bearerKeyDao = null;
-    this.toolCallActivityDao = null;
   }
 }

src/dao/ServerDaoDbImpl.ts

@@ -38,6 +38,7 @@ export class ServerDaoDbImpl implements ServerDao {
       prompts: entity.prompts,
       options: entity.options,
       oauth: entity.oauth,
+      proxy: entity.proxy,
       openapi: entity.openapi,
     });
     return this.mapToServerConfig(server);
@@ -62,6 +63,7 @@ export class ServerDaoDbImpl implements ServerDao {
       prompts: entity.prompts,
       options: entity.options,
       oauth: entity.oauth,
+      proxy: entity.proxy,
       openapi: entity.openapi,
     });
     return server ? this.mapToServerConfig(server) : null;
@@ -140,6 +142,7 @@ export class ServerDaoDbImpl implements ServerDao {
     prompts?: Record<string, { enabled: boolean; description?: string }>;
     options?: Record<string, any>;
     oauth?: Record<string, any>;
+    proxy?: Record<string, any>;
     openapi?: Record<string, any>;
   }): ServerConfigWithName {
     return {
@@ -158,6 +161,7 @@ export class ServerDaoDbImpl implements ServerDao {
       prompts: server.prompts,
       options: server.options,
       oauth: server.oauth,
+      proxy: server.proxy,
       openapi: server.openapi,
     };
   }

src/dao/ToolCallActivityDao.ts

@@ -1,186 +0,0 @@
-import {
-  IToolCallActivity,
-  IToolCallActivitySearchParams,
-  IToolCallActivityPage,
-  IToolCallActivityStats,
-} from '../types/index.js';
-import { ToolCallActivityRepository } from '../db/repositories/ToolCallActivityRepository.js';
-
-/**
- * Tool Call Activity DAO interface (DB mode only)
- */
-export interface ToolCallActivityDao {
-  /**
-   * Create a new tool call activity
-   */
-  create(activity: Omit<IToolCallActivity, 'id' | 'createdAt'>): Promise<IToolCallActivity>;
-
-  /**
-   * Find activity by ID
-   */
-  findById(id: string): Promise<IToolCallActivity | null>;
-
-  /**
-   * Update an existing activity
-   */
-  update(id: string, updates: Partial<IToolCallActivity>): Promise<IToolCallActivity | null>;
-
-  /**
-   * Delete an activity
-   */
-  delete(id: string): Promise<boolean>;
-
-  /**
-   * Find activities with pagination and filtering
-   */
-  findWithPagination(
-    page: number,
-    pageSize: number,
-    params?: IToolCallActivitySearchParams,
-  ): Promise<IToolCallActivityPage>;
-
-  /**
-   * Get recent activities
-   */
-  findRecent(limit: number): Promise<IToolCallActivity[]>;
-
-  /**
-   * Get activity statistics
-   */
-  getStats(): Promise<IToolCallActivityStats>;
-
-  /**
-   * Delete old activities (cleanup)
-   */
-  deleteOlderThan(date: Date): Promise<number>;
-
-  /**
-   * Count total activities
-   */
-  count(): Promise<number>;
-}
-
-/**
- * Database-backed implementation of ToolCallActivityDao
- */
-export class ToolCallActivityDaoDbImpl implements ToolCallActivityDao {
-  private repository: ToolCallActivityRepository;
-
-  constructor() {
-    this.repository = new ToolCallActivityRepository();
-  }
-
-  async create(activity: Omit<IToolCallActivity, 'id' | 'createdAt'>): Promise<IToolCallActivity> {
-    const created = await this.repository.create({
-      serverName: activity.serverName,
-      toolName: activity.toolName,
-      keyId: activity.keyId,
-      keyName: activity.keyName,
-      status: activity.status,
-      request: activity.request,
-      response: activity.response,
-      errorMessage: activity.errorMessage,
-      durationMs: activity.durationMs,
-      clientIp: activity.clientIp,
-      sessionId: activity.sessionId,
-      groupName: activity.groupName,
-    });
-    return this.mapToInterface(created);
-  }
-
-  async findById(id: string): Promise<IToolCallActivity | null> {
-    const activity = await this.repository.findById(id);
-    return activity ? this.mapToInterface(activity) : null;
-  }
-
-  async update(
-    id: string,
-    updates: Partial<IToolCallActivity>,
-  ): Promise<IToolCallActivity | null> {
-    const updated = await this.repository.update(id, {
-      serverName: updates.serverName,
-      toolName: updates.toolName,
-      keyId: updates.keyId,
-      keyName: updates.keyName,
-      status: updates.status,
-      request: updates.request,
-      response: updates.response,
-      errorMessage: updates.errorMessage,
-      durationMs: updates.durationMs,
-      clientIp: updates.clientIp,
-      sessionId: updates.sessionId,
-      groupName: updates.groupName,
-    });
-    return updated ? this.mapToInterface(updated) : null;
-  }
-
-  async delete(id: string): Promise<boolean> {
-    return await this.repository.delete(id);
-  }
-
-  async findWithPagination(
-    page: number = 1,
-    pageSize: number = 20,
-    params: IToolCallActivitySearchParams = {},
-  ): Promise<IToolCallActivityPage> {
-    const result = await this.repository.findWithPagination(page, pageSize, params);
-    return {
-      items: result.items.map((item) => this.mapToInterface(item)),
-      total: result.total,
-      page: result.page,
-      pageSize: result.pageSize,
-      totalPages: result.totalPages,
-    };
-  }
-
-  async findRecent(limit: number = 10): Promise<IToolCallActivity[]> {
-    const activities = await this.repository.findRecent(limit);
-    return activities.map((activity) => this.mapToInterface(activity));
-  }
-
-  async getStats(): Promise<IToolCallActivityStats> {
-    return await this.repository.getStats();
-  }
-
-  async deleteOlderThan(date: Date): Promise<number> {
-    return await this.repository.deleteOlderThan(date);
-  }
-
-  async count(): Promise<number> {
-    return await this.repository.count();
-  }
-
-  private mapToInterface(activity: {
-    id: string;
-    serverName: string;
-    toolName: string;
-    keyId?: string;
-    keyName?: string;
-    status: 'pending' | 'success' | 'error';
-    request?: string;
-    response?: string;
-    errorMessage?: string;
-    durationMs?: number;
-    clientIp?: string;
-    sessionId?: string;
-    groupName?: string;
-    createdAt: Date;
-  }): IToolCallActivity {
-    return {
-      id: activity.id,
-      serverName: activity.serverName,
-      toolName: activity.toolName,
-      keyId: activity.keyId,
-      keyName: activity.keyName,
-      status: activity.status,
-      request: activity.request,
-      response: activity.response,
-      errorMessage: activity.errorMessage,
-      durationMs: activity.durationMs,
-      clientIp: activity.clientIp,
-      sessionId: activity.sessionId,
-      groupName: activity.groupName,
-      createdAt: activity.createdAt,
-    };
-  }
-}

src/dao/index.ts

@@ -9,7 +9,6 @@ export * from './UserConfigDao.js';
 export * from './OAuthClientDao.js';
 export * from './OAuthTokenDao.js';
 export * from './BearerKeyDao.js';
-export * from './ToolCallActivityDao.js';
 
 // Export database implementations
 export * from './UserDaoDbImpl.js';

src/db/entities/Server.ts

@@ -59,6 +59,9 @@ export class Server {
   @Column({ type: 'simple-json', nullable: true })
   oauth?: Record<string, any>;
 
+  @Column({ type: 'simple-json', nullable: true })
+  proxy?: Record<string, any>;
+
   @Column({ type: 'simple-json', nullable: true })
   openapi?: Record<string, any>;
 

src/db/entities/ToolCallActivity.ts

@@ -1,62 +0,0 @@
-import {
-  Entity,
-  Column,
-  PrimaryGeneratedColumn,
-  CreateDateColumn,
-  Index,
-} from 'typeorm';
-
-/**
- * Tool call activity entity for logging tool invocations (DB mode only)
- */
-@Entity({ name: 'tool_call_activities' })
-export class ToolCallActivity {
-  @PrimaryGeneratedColumn('uuid')
-  id: string;
-
-  @Index()
-  @Column({ type: 'varchar', length: 255, name: 'server_name' })
-  serverName: string;
-
-  @Index()
-  @Column({ type: 'varchar', length: 255, name: 'tool_name' })
-  toolName: string;
-
-  @Index()
-  @Column({ type: 'varchar', length: 255, name: 'key_id', nullable: true })
-  keyId?: string;
-
-  @Column({ type: 'varchar', length: 255, name: 'key_name', nullable: true })
-  keyName?: string;
-
-  @Index()
-  @Column({ type: 'varchar', length: 50, default: 'pending' })
-  status: 'pending' | 'success' | 'error';
-
-  @Column({ type: 'text', nullable: true })
-  request?: string;
-
-  @Column({ type: 'text', nullable: true })
-  response?: string;
-
-  @Column({ type: 'text', name: 'error_message', nullable: true })
-  errorMessage?: string;
-
-  @Column({ type: 'int', name: 'duration_ms', nullable: true })
-  durationMs?: number;
-
-  @Column({ type: 'varchar', length: 100, name: 'client_ip', nullable: true })
-  clientIp?: string;
-
-  @Column({ type: 'varchar', length: 255, name: 'session_id', nullable: true })
-  sessionId?: string;
-
-  @Column({ type: 'varchar', length: 255, name: 'group_name', nullable: true })
-  groupName?: string;
-
-  @Index()
-  @CreateDateColumn({ name: 'created_at', type: 'timestamp' })
-  createdAt: Date;
-}
-
-export default ToolCallActivity;

src/db/entities/index.ts

@@ -7,7 +7,6 @@ import UserConfig from './UserConfig.js';
 import OAuthClient from './OAuthClient.js';
 import OAuthToken from './OAuthToken.js';
 import BearerKey from './BearerKey.js';
-import ToolCallActivity from './ToolCallActivity.js';
 
 // Export all entities
 export default [
@@ -20,7 +19,6 @@ export default [
   OAuthClient,
   OAuthToken,
   BearerKey,
-  ToolCallActivity,
 ];
 
 // Export individual entities for direct use
@@ -34,5 +32,4 @@ export {
   OAuthClient,
   OAuthToken,
   BearerKey,
-  ToolCallActivity,
 };

src/db/repositories/ToolCallActivityRepository.ts

@@ -1,200 +0,0 @@
-import { Repository, FindOptionsWhere, ILike, Between } from 'typeorm';
-import { ToolCallActivity } from '../entities/ToolCallActivity.js';
-import { getAppDataSource } from '../connection.js';
-
-/**
- * Search parameters for filtering tool call activities
- */
-export interface ToolCallActivitySearchParams {
-  serverName?: string;
-  toolName?: string;
-  keyId?: string;
-  status?: 'pending' | 'success' | 'error';
-  groupName?: string;
-  startDate?: Date;
-  endDate?: Date;
-  searchQuery?: string;
-}
-
-/**
- * Pagination result for tool call activities
- */
-export interface ToolCallActivityPage {
-  items: ToolCallActivity[];
-  total: number;
-  page: number;
-  pageSize: number;
-  totalPages: number;
-}
-
-/**
- * Repository for ToolCallActivity entity
- */
-export class ToolCallActivityRepository {
-  private repository: Repository<ToolCallActivity>;
-
-  constructor() {
-    this.repository = getAppDataSource().getRepository(ToolCallActivity);
-  }
-
-  /**
-   * Create a new tool call activity
-   */
-  async create(
-    activity: Omit<ToolCallActivity, 'id' | 'createdAt'>,
-  ): Promise<ToolCallActivity> {
-    const newActivity = this.repository.create(activity);
-    return await this.repository.save(newActivity);
-  }
-
-  /**
-   * Find activity by ID
-   */
-  async findById(id: string): Promise<ToolCallActivity | null> {
-    return await this.repository.findOne({ where: { id } });
-  }
-
-  /**
-   * Update an existing activity
-   */
-  async update(
-    id: string,
-    updates: Partial<ToolCallActivity>,
-  ): Promise<ToolCallActivity | null> {
-    const activity = await this.findById(id);
-    if (!activity) {
-      return null;
-    }
-    const updated = this.repository.merge(activity, updates);
-    return await this.repository.save(updated);
-  }
-
-  /**
-   * Delete an activity
-   */
-  async delete(id: string): Promise<boolean> {
-    const result = await this.repository.delete({ id });
-    return (result.affected ?? 0) > 0;
-  }
-
-  /**
-   * Find activities with pagination and filtering
-   */
-  async findWithPagination(
-    page: number = 1,
-    pageSize: number = 20,
-    params: ToolCallActivitySearchParams = {},
-  ): Promise<ToolCallActivityPage> {
-    const where: FindOptionsWhere<ToolCallActivity>[] = [];
-    const baseWhere: FindOptionsWhere<ToolCallActivity> = {};
-
-    // Add filters
-    if (params.serverName) {
-      baseWhere.serverName = params.serverName;
-    }
-    if (params.toolName) {
-      baseWhere.toolName = params.toolName;
-    }
-    if (params.keyId) {
-      baseWhere.keyId = params.keyId;
-    }
-    if (params.status) {
-      baseWhere.status = params.status;
-    }
-    if (params.groupName) {
-      baseWhere.groupName = params.groupName;
-    }
-    if (params.startDate && params.endDate) {
-      baseWhere.createdAt = Between(params.startDate, params.endDate);
-    }
-
-    // Handle search query - search across multiple fields
-    if (params.searchQuery) {
-      const searchPattern = `%${params.searchQuery}%`;
-      where.push(
-        { ...baseWhere, serverName: ILike(searchPattern) },
-        { ...baseWhere, toolName: ILike(searchPattern) },
-        { ...baseWhere, keyName: ILike(searchPattern) },
-        { ...baseWhere, groupName: ILike(searchPattern) },
-      );
-    } else {
-      where.push(baseWhere);
-    }
-
-    const [items, total] = await this.repository.findAndCount({
-      where: where.length > 0 ? where : undefined,
-      order: { createdAt: 'DESC' },
-      skip: (page - 1) * pageSize,
-      take: pageSize,
-    });
-
-    return {
-      items,
-      total,
-      page,
-      pageSize,
-      totalPages: Math.ceil(total / pageSize),
-    };
-  }
-
-  /**
-   * Get recent activities
-   */
-  async findRecent(limit: number = 10): Promise<ToolCallActivity[]> {
-    return await this.repository.find({
-      order: { createdAt: 'DESC' },
-      take: limit,
-    });
-  }
-
-  /**
-   * Get activity statistics
-   */
-  async getStats(): Promise<{
-    total: number;
-    success: number;
-    error: number;
-    pending: number;
-    avgDurationMs: number;
-  }> {
-    const stats = await this.repository
-      .createQueryBuilder('activity')
-      .select([
-        'COUNT(*) as total',
-        'SUM(CASE WHEN status = \'success\' THEN 1 ELSE 0 END) as success',
-        'SUM(CASE WHEN status = \'error\' THEN 1 ELSE 0 END) as error',
-        'SUM(CASE WHEN status = \'pending\' THEN 1 ELSE 0 END) as pending',
-        'AVG(duration_ms) as avgDurationMs',
-      ])
-      .getRawOne();
-
-    return {
-      total: parseInt(stats?.total || '0', 10),
-      success: parseInt(stats?.success || '0', 10),
-      error: parseInt(stats?.error || '0', 10),
-      pending: parseInt(stats?.pending || '0', 10),
-      avgDurationMs: parseFloat(stats?.avgDurationMs || '0'),
-    };
-  }
-
-  /**
-   * Delete old activities (cleanup)
-   */
-  async deleteOlderThan(date: Date): Promise<number> {
-    const result = await this.repository
-      .createQueryBuilder()
-      .delete()
-      .where('created_at < :date', { date })
-      .execute();
-    return result.affected ?? 0;
-  }
-
-  /**
-   * Count total activities
-   */
-  async count(): Promise<number> {
-    return await this.repository.count();
-  }
-}
-
-export default ToolCallActivityRepository;

src/db/repositories/index.ts

@@ -7,7 +7,6 @@ import { UserConfigRepository } from './UserConfigRepository.js';
 import { OAuthClientRepository } from './OAuthClientRepository.js';
 import { OAuthTokenRepository } from './OAuthTokenRepository.js';
 import { BearerKeyRepository } from './BearerKeyRepository.js';
-import { ToolCallActivityRepository } from './ToolCallActivityRepository.js';
 
 // Export all repositories
 export {
@@ -20,5 +19,4 @@ export {
   OAuthClientRepository,
   OAuthTokenRepository,
   BearerKeyRepository,
-  ToolCallActivityRepository,
 };

src/services/mcpService.ts

@@ -1,4 +1,6 @@
 import os from 'os';
+import path from 'path';
+import fs from 'fs';
 import { Server } from '@modelcontextprotocol/sdk/server/index.js';
 import {
   CallToolRequestSchema,
@@ -15,7 +17,7 @@ import {
   StreamableHTTPClientTransportOptions,
 } from '@modelcontextprotocol/sdk/client/streamableHttp.js';
 import { createFetchWithProxy, getProxyConfigFromEnv } from './proxy.js';
-import { ServerInfo, ServerConfig, Tool } from '../types/index.js';
+import { ServerInfo, ServerConfig, Tool, ProxychainsConfig } from '../types/index.js';
 import { expandEnvVars, replaceEnvVars, getNameSeparator } from '../config/index.js';
 import config from '../config/index.js';
 import { getGroup } from './sseService.js';
@@ -32,6 +34,150 @@ const servers: { [sessionId: string]: Server } = {};
 
 import { setupClientKeepAlive } from './keepAliveService.js';
 
+/**
+ * Check if proxychains4 is available on the system (Linux/macOS only).
+ * Returns the path to proxychains4 if found, null otherwise.
+ */
+const findProxychains4 = (): string | null => {
+  // Windows is not supported
+  if (process.platform === 'win32') {
+    return null;
+  }
+
+  // Common proxychains4 binary paths
+  const possiblePaths = [
+    '/usr/bin/proxychains4',
+    '/usr/local/bin/proxychains4',
+    '/opt/homebrew/bin/proxychains4', // macOS Homebrew ARM
+    '/usr/local/Cellar/proxychains-ng/*/bin/proxychains4', // macOS Homebrew Intel
+  ];
+
+  for (const p of possiblePaths) {
+    if (fs.existsSync(p)) {
+      return p;
+    }
+  }
+
+  // Try to find in PATH
+  const pathEnv = process.env.PATH || '';
+  const pathDirs = pathEnv.split(path.delimiter);
+  for (const dir of pathDirs) {
+    const fullPath = path.join(dir, 'proxychains4');
+    if (fs.existsSync(fullPath)) {
+      return fullPath;
+    }
+  }
+
+  return null;
+};
+
+/**
+ * Generate a temporary proxychains4 configuration file.
+ * Returns the path to the generated config file.
+ */
+const generateProxychainsConfig = (
+  serverName: string,
+  proxyConfig: ProxychainsConfig,
+): string | null => {
+  // If a custom config path is provided, use it directly
+  if (proxyConfig.configPath) {
+    if (fs.existsSync(proxyConfig.configPath)) {
+      return proxyConfig.configPath;
+    }
+    console.warn(
+      `[${serverName}] Custom proxychains config not found: ${proxyConfig.configPath}`,
+    );
+    return null;
+  }
+
+  // Validate required fields
+  if (!proxyConfig.host || !proxyConfig.port) {
+    console.warn(`[${serverName}] Proxy host and port are required for proxychains4`);
+    return null;
+  }
+
+  const proxyType = proxyConfig.type || 'socks5';
+  const proxyLine = proxyConfig.username && proxyConfig.password
+    ? `${proxyType} ${proxyConfig.host} ${proxyConfig.port} ${proxyConfig.username} ${proxyConfig.password}`
+    : `${proxyType} ${proxyConfig.host} ${proxyConfig.port}`;
+
+  const configContent = `# Proxychains4 configuration for MCP server: ${serverName}
+# Generated by MCPHub
+
+strict_chain
+proxy_dns
+remote_dns_subnet 224
+tcp_read_time_out 15000
+tcp_connect_time_out 8000
+
+[ProxyList]
+${proxyLine}
+`;
+
+  // Create temp directory if needed
+  const tempDir = path.join(os.tmpdir(), 'mcphub-proxychains');
+  if (!fs.existsSync(tempDir)) {
+    fs.mkdirSync(tempDir, { recursive: true });
+  }
+
+  // Write config file
+  const configPath = path.join(tempDir, `${serverName.replace(/[^a-zA-Z0-9-_]/g, '_')}.conf`);
+  fs.writeFileSync(configPath, configContent, 'utf-8');
+  console.log(`[${serverName}] Generated proxychains4 config: ${configPath}`);
+
+  return configPath;
+};
+
+/**
+ * Wrap a command with proxychains4 if proxy is configured and available.
+ * Returns modified command and args if proxychains4 is used, original values otherwise.
+ */
+const wrapWithProxychains = (
+  serverName: string,
+  command: string,
+  args: string[],
+  proxyConfig?: ProxychainsConfig,
+): { command: string; args: string[] } => {
+  // Skip if proxy is not enabled or not configured
+  if (!proxyConfig?.enabled) {
+    return { command, args };
+  }
+
+  // Check platform - Windows is not supported
+  if (process.platform === 'win32') {
+    console.warn(
+      `[${serverName}] proxychains4 proxy is not supported on Windows, ignoring proxy configuration`,
+    );
+    return { command, args };
+  }
+
+  // Find proxychains4 binary
+  const proxychains4Path = findProxychains4();
+  if (!proxychains4Path) {
+    console.warn(
+      `[${serverName}] proxychains4 not found on system, install it with: apt install proxychains4 (Debian/Ubuntu) or brew install proxychains-ng (macOS)`,
+    );
+    return { command, args };
+  }
+
+  // Generate or get config file
+  const configPath = generateProxychainsConfig(serverName, proxyConfig);
+  if (!configPath) {
+    console.warn(`[${serverName}] Failed to setup proxychains4 configuration, skipping proxy`);
+    return { command, args };
+  }
+
+  // Wrap command with proxychains4
+  console.log(
+    `[${serverName}] Using proxychains4 proxy: ${proxyConfig.type || 'socks5'}://${proxyConfig.host}:${proxyConfig.port}`,
+  );
+
+  return {
+    command: proxychains4Path,
+    args: ['-f', configPath, command, ...args],
+  };
+};
+
 export const initUpstreamServers = async (): Promise<void> => {
   // Initialize OAuth clients for servers with dynamic registration
   await initializeAllOAuthClients();
@@ -209,11 +355,19 @@ export const createTransportFromConfig = async (name: string, conf: ServerConfig
       env['npm_config_registry'] = systemConfig.install.npmRegistry;
     }
 
-    // Expand environment variables in command
+    // Apply proxychains4 wrapper if proxy is configured (Linux/macOS only)
+    const { command: finalCommand, args: finalArgs } = wrapWithProxychains(
+      name,
+      conf.command,
+      replaceEnvVars(conf.args) as string[],
+      conf.proxy,
+    );
+
+    // Create STDIO transport with potentially wrapped command
     transport = new StdioClientTransport({
       cwd: os.homedir(),
-      command: conf.command,
+      command: finalCommand,
-      args: replaceEnvVars(conf.args) as string[],
+      args: finalArgs,
       env: env,
       stderr: 'pipe',
     });

src/types/index.ts

@@ -270,6 +270,17 @@ export interface McpSettings {
   bearerKeys?: BearerKey[]; // Bearer authentication keys (multi-key configuration)
 }
 
+// Proxychains4 configuration for STDIO servers (Linux/macOS only)
+export interface ProxychainsConfig {
+  enabled?: boolean; // Enable/disable proxychains4 proxy routing
+  type?: 'socks4' | 'socks5' | 'http'; // Proxy protocol type
+  host?: string; // Proxy server hostname or IP address
+  port?: number; // Proxy server port
+  username?: string; // Proxy authentication username (optional)
+  password?: string; // Proxy authentication password (optional)
+  configPath?: string; // Path to custom proxychains4 configuration file (optional, overrides above settings)
+}
+
 // Configuration details for an individual server
 export interface ServerConfig {
   type?: 'stdio' | 'sse' | 'streamable-http' | 'openapi'; // Type of server
@@ -285,6 +296,8 @@ export interface ServerConfig {
   tools?: Record<string, { enabled: boolean; description?: string }>; // Tool-specific configurations with enable/disable state and custom descriptions
   prompts?: Record<string, { enabled: boolean; description?: string }>; // Prompt-specific configurations with enable/disable state and custom descriptions
   options?: Partial<Pick<RequestOptions, 'timeout' | 'resetTimeoutOnProgress' | 'maxTotalTimeout'>>; // MCP request options configuration
+  // Proxychains4 proxy configuration for STDIO servers (Linux/macOS only, Windows not supported)
+  proxy?: ProxychainsConfig;
   // OAuth authentication for upstream MCP servers
   oauth?: {
     // Static client configuration (traditional OAuth flow)
@@ -481,51 +494,3 @@ export interface BatchCreateGroupsResponse {
   failureCount: number; // Number of groups that failed
   results: BatchGroupResult[]; // Detailed results for each group
 }
-
-// Tool call activity interface for logging tool invocations (DB mode only)
-export interface IToolCallActivity {
-  id?: string;
-  serverName: string;
-  toolName: string;
-  keyId?: string;
-  keyName?: string;
-  status: 'pending' | 'success' | 'error';
-  request?: string;
-  response?: string;
-  errorMessage?: string;
-  durationMs?: number;
-  clientIp?: string;
-  sessionId?: string;
-  groupName?: string;
-  createdAt?: Date;
-}
-
-// Tool call activity search parameters
-export interface IToolCallActivitySearchParams {
-  serverName?: string;
-  toolName?: string;
-  keyId?: string;
-  status?: 'pending' | 'success' | 'error';
-  groupName?: string;
-  startDate?: Date;
-  endDate?: Date;
-  searchQuery?: string;
-}
-
-// Tool call activity pagination result
-export interface IToolCallActivityPage {
-  items: IToolCallActivity[];
-  total: number;
-  page: number;
-  pageSize: number;
-  totalPages: number;
-}
-
-// Tool call activity statistics
-export interface IToolCallActivityStats {
-  total: number;
-  success: number;
-  error: number;
-  pending: number;
-  avgDurationMs: number;
-}