diff --git a/docs/content/docs/mcp.cn.mdx b/docs/content/docs/mcp.cn.mdx
index 48beca2d9b..ccde3bd061 100644
--- a/docs/content/docs/mcp.cn.mdx
+++ b/docs/content/docs/mcp.cn.mdx
@@ -124,6 +124,35 @@ DBX MCP Server 提供以下工具，AI 助手会根据你的需求自动调用
 | `connection_name` | 是 | DBX 连接名称 |
 | `sql` | 是 | SQL 查询语句 |
 
+### `dbx_add_connection`
+
+添加新的数据库连接。
+
+| 参数 | 必填 | 说明 |
+|---|---|---|
+| `name` | 是 | 连接名称 |
+| `db_type` | 是 | 数据库类型（postgres、mysql、sqlite、redis 等） |
+| `host` | 是 | 数据库主机 |
+| `port` | 是 | 数据库端口 |
+| `username` | 否 | 用户名 |
+| `password` | 否 | 密码 |
+| `database` | 否 | 默认数据库名 |
+| `ssl` | 否 | 是否启用 SSL（默认 false） |
+
+**示例对话：**
+> "添加一个 PostgreSQL 连接，名称 prod-db，地址 db.example.com:5432"
+
+### `dbx_remove_connection`
+
+删除数据库连接。
+
+| 参数 | 必填 | 说明 |
+|---|---|---|
+| `connection_name` | 是 | 要删除的连接名称 |
+
+**示例对话：**
+> "删除 test-db 连接"
+
 ### `dbx_open_table`
 
 在 DBX 桌面端打开指定表。**需要 DBX 正在运行。**
@@ -151,15 +180,13 @@ DBX 会自动新开一个 tab 显示数据，窗口自动置前。
 
 ### 连接配置
 
-MCP Server 从 DBX 的配置目录读取连接信息：
+MCP Server 从 DBX 的 SQLite 数据库读取连接信息：
 
 | 平台 | 路径 |
 |---|---|
-| macOS | `~/Library/Application Support/com.dbx.app/connections.json` |
-| Linux | `~/.config/com.dbx.app/connections.json` |
-| Windows | `%APPDATA%\com.dbx.app\connections.json` |
-
-密码从系统钥匙串中获取（macOS Keychain / Linux Secret Service / Windows 凭据管理器）。
+| macOS | `~/Library/Application Support/com.dbx.app/dbx.db` |
+| Linux | `~/.config/com.dbx.app/dbx.db` |
+| Windows | `%APPDATA%\com.dbx.app\dbx.db` |
 
 ### UI 联动
 
diff --git a/docs/content/docs/mcp.mdx b/docs/content/docs/mcp.mdx
index e82f0cba6e..d1632e51c3 100644
--- a/docs/content/docs/mcp.mdx
+++ b/docs/content/docs/mcp.mdx
@@ -124,6 +124,35 @@ Execute a SQL query and return results (max 100 rows).
 | `connection_name` | Yes | DBX connection name |
 | `sql` | Yes | SQL query |
 
+### `dbx_add_connection`
+
+Add a new database connection to DBX.
+
+| Parameter | Required | Description |
+|---|---|---|
+| `name` | Yes | Connection name |
+| `db_type` | Yes | Database type (postgres, mysql, sqlite, redis, etc.) |
+| `host` | Yes | Database host |
+| `port` | Yes | Database port |
+| `username` | No | Username |
+| `password` | No | Password |
+| `database` | No | Default database name |
+| `ssl` | No | Enable SSL (default: false) |
+
+**Example:**
+> "Add a PostgreSQL connection named prod-db on db.example.com:5432"
+
+### `dbx_remove_connection`
+
+Remove a database connection from DBX.
+
+| Parameter | Required | Description |
+|---|---|---|
+| `connection_name` | Yes | Name of the connection to remove |
+
+**Example:**
+> "Remove the test-db connection"
+
 ### `dbx_open_table`
 
 Open a table in DBX desktop app UI. **Requires DBX to be running.**
@@ -151,15 +180,13 @@ Execute a SQL query in DBX desktop app UI. **Requires DBX to be running.**
 
 ### Connection Configs
 
-The MCP Server reads DBX's connection config files:
+The MCP Server reads DBX's SQLite database:
 
 | Platform | Path |
 |---|---|
-| macOS | `~/Library/Application Support/com.dbx.app/connections.json` |
-| Linux | `~/.config/com.dbx.app/connections.json` |
-| Windows | `%APPDATA%\com.dbx.app\connections.json` |
-
-Passwords are retrieved from the system keyring (macOS Keychain / Linux Secret Service / Windows Credential Manager).
+| macOS | `~/Library/Application Support/com.dbx.app/dbx.db` |
+| Linux | `~/.config/com.dbx.app/dbx.db` |
+| Windows | `%APPDATA%\com.dbx.app\dbx.db` |
 
 ### UI Integration
 
diff --git a/mcp/README.md b/mcp/README.md
index 2bd14b28cf..7f78cc8f39 100644
--- a/mcp/README.md
+++ b/mcp/README.md
@@ -7,7 +7,7 @@ MCP server for [DBX](https://github.com/t8y2/dbx) — lets AI agents (Claude Cod
 ## Features
 
 - **Zero config** — Automatically reads your DBX connections (including passwords from system keyring)
-- **5 tools** — List connections, list tables, describe table, execute SQL, open table in DBX UI
+- **7 tools** — List/add/remove connections, list tables, describe table, execute SQL, open table in DBX UI
 - **Connection pooling** — Reuses database connections across queries
 - **PostgreSQL & MySQL** — Supports PostgreSQL, MySQL, and compatible databases (Doris, StarRocks, etc.)
 - **DBX UI integration** — Open tables directly in the DBX desktop app from your AI agent
@@ -69,6 +69,8 @@ In Claude Code, just ask:
 | Tool | Description |
 |---|---|
 | `dbx_list_connections` | List all database connections configured in DBX |
+| `dbx_add_connection` | Add a new database connection |
+| `dbx_remove_connection` | Remove a database connection |
 | `dbx_list_tables` | List tables and views for a connection |
 | `dbx_describe_table` | Get column definitions for a table |
 | `dbx_execute_query` | Execute a SQL query (max 100 rows) |
@@ -79,17 +81,14 @@ In Claude Code, just ask:
 ```
 AI Agent → MCP Server → Database
                 ↓
-         DBX connections.json
-         + system keyring (passwords)
+         DBX SQLite database (dbx.db)
 ```
 
-The MCP server reads your database connections from DBX's config directory:
+The MCP server reads your database connections from DBX's SQLite database:
 
-- **macOS**: `~/Library/Application Support/com.dbx.app/connections.json`
-- **Linux**: `~/.config/com.dbx.app/connections.json`
-- **Windows**: `%APPDATA%\com.dbx.app\connections.json`
-
-Passwords are retrieved from the system keyring (macOS Keychain / Linux Secret Service / Windows Credential Manager).
+- **macOS**: `~/Library/Application Support/com.dbx.app/dbx.db`
+- **Linux**: `~/.config/com.dbx.app/dbx.db`
+- **Windows**: `%APPDATA%\com.dbx.app\dbx.db`
 
 ## DBX UI Integration
 
@@ -112,8 +111,8 @@ MIT
 
 ### 特性
 
-- **零配置** — 自动读取 DBX 的连接配置（包括系统钥匙串中的密码）
-- **5 个工具** — 列出连接、列出表、查看表结构、执行 SQL、在 DBX 中打开表
+- **零配置** — 自动读取 DBX 的连接配置
+- **7 个工具** — 列出/添加/删除连接、列出表、查看表结构、执行 SQL、在 DBX 中打开表
 - **连接池** — 跨查询复用数据库连接
 - **PostgreSQL 和 MySQL** — 支持 PostgreSQL、MySQL 及兼容数据库（Doris、StarRocks 等）
 - **DBX UI 联动** — 从 AI 助手直接在 DBX 桌面端打开表
@@ -161,6 +160,8 @@ npx @dbx-app/mcp-server
 | 工具 | 说明 |
 |---|---|
 | `dbx_list_connections` | 列出 DBX 中所有已配置的数据库连接 |
+| `dbx_add_connection` | 添加新的数据库连接 |
+| `dbx_remove_connection` | 删除数据库连接 |
 | `dbx_list_tables` | 列出指定连接的表和视图 |
 | `dbx_describe_table` | 获取表的列定义 |
 | `dbx_execute_query` | 执行 SQL 查询（最多返回 100 行） |
@@ -168,13 +169,11 @@ npx @dbx-app/mcp-server
 
 ### 工作原理
 
-MCP Server 从 DBX 的配置目录读取连接信息：
+MCP Server 从 DBX 的 SQLite 数据库读取连接信息：
 
-- **macOS**: `~/Library/Application Support/com.dbx.app/connections.json`
-- **Linux**: `~/.config/com.dbx.app/connections.json`
-- **Windows**: `%APPDATA%\com.dbx.app\connections.json`
-
-密码从系统钥匙串中获取（macOS Keychain / Linux Secret Service / Windows 凭据管理器）。
+- **macOS**: `~/Library/Application Support/com.dbx.app/dbx.db`
+- **Linux**: `~/.config/com.dbx.app/dbx.db`
+- **Windows**: `%APPDATA%\com.dbx.app\dbx.db`
 
 ### DBX UI 联动
 
diff --git a/mcp/package.json b/mcp/package.json
index bbeb5f734d..1be53ba037 100644
--- a/mcp/package.json
+++ b/mcp/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dbx-app/mcp-server",
-  "version": "0.1.3",
+  "version": "0.2.0",
   "mcpName": "io.github.t8y2/dbx",
   "description": "MCP server for DBX \u2014 query databases from Claude Code, Cursor, and other AI agents",
   "type": "module",
diff --git a/mcp/server.json b/mcp/server.json
index 1e0ade33f3..d3232b7792 100644
--- a/mcp/server.json
+++ b/mcp/server.json
@@ -1,17 +1,17 @@
 {
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "io.github.t8y2/dbx",
-  "description": "Query databases from AI agents using connections configured in DBX.",
+  "description": "Query and manage databases from AI agents using connections configured in DBX.",
   "repository": {
     "url": "https://github.com/t8y2/dbx",
     "source": "github"
   },
-  "version": "0.1.3",
+  "version": "0.2.0",
   "packages": [
     {
       "registryType": "npm",
       "identifier": "@dbx-app/mcp-server",
-      "version": "0.1.3",
+      "version": "0.2.0",
       "transport": {
         "type": "stdio"
       }
diff --git a/mcp/src/index.ts b/mcp/src/index.ts
index 70e993ae5d..73f433b4b0 100644
--- a/mcp/src/index.ts
+++ b/mcp/src/index.ts
@@ -61,7 +61,7 @@ function mdTable(headers: string[], rows: string[][]): string {
 
 const server = new McpServer({
   name: "dbx",
-  version: "0.1.1",
+  version: "0.2.0",
 });
 
 server.tool(