mcp介绍
MCP(Model Context Protocol)是由 Anthropic(Claude的那个公司) 推出的开放标准协议,它为开发者提供了一个强大的工具,能够在数据源和 AI 驱动工具之间建立安全的双向连接。
举个好理解的例子:如果把 AI 比作电脑主机,那么 MCP 就相当于 USB 协议,而 MCP Server 则类似于各种 USB 设备(如摄像头、麦克风等)。通过实现 MCP Server,我们可以让 AI 轻松连接到各种数据源,大大扩展其功能范围。添加 MCP Server 的作用简单的说就是让你的 AI 模型具备调用外部服务的能力。
https://modelcontextprotocol.io/introduction
下载python项目
- 项目本身只有读库,读表的方法,需要进行扩展
- https://github.com/hannesrudolph/sqlite-explorer-fastmcp-mcp-server
添加增删改方法
- @mcp.tool()
- def insert_data(table_name: str, data: Dict[str, Any]) -> str:
- """Insert data into a specified table.
- Args:
- table_name: Name of the table to insert data into.
- data: A dictionary where keys are column names and values are the data to insert.
- Returns:
- A message indicating success or failure.
- """
- if not DB_PATH.exists():
- raise FileNotFoundError(f"Messages database not found at: {DB_PATH}")
- with SQLiteConnection(DB_PATH) as conn:
- cursor = conn.cursor()
- try:
- columns = ', '.join(data.keys())
- placeholders = ', '.join(['?' for _ in data])
- sql = f"INSERT INTO {table_name} ({columns}) VALUES ({placeholders})"
- cursor.execute(sql, list(data.values()))
- conn.commit() # Commit the transaction
- return f"Data inserted successfully into '{table_name}'."
- except sqlite3.Error as e:
- raise ValueError(f"SQLite error: {str(e)}")
- @mcp.tool()
- def update_data(table_name: str, updates: Dict[str, Any], condition: str) -> str:
- """Update data in a specified table.
- Args:
- table_name: Name of the table to update.
- updates: A dictionary where keys are column names and values are the new data.
- condition: The condition for which rows to update (e.g., "id = 1").
- Returns:
- A message indicating success or failure.
- """
- if not DB_PATH.exists():
- raise FileNotFoundError(f"Messages database not found at: {DB_PATH}")
- with SQLiteConnection(DB_PATH) as conn:
- cursor = conn.cursor()
- try:
- updates_string = ', '.join([f"{key} = ?" for key in updates.keys()])
- sql = f"UPDATE {table_name} SET {updates_string} WHERE {condition}"
- cursor.execute(sql, list(updates.values()))
- conn.commit() # Commit the transaction
- return f"Data updated successfully in '{table_name}' where {condition}."
- except sqlite3.Error as e:
- raise ValueError(f"SQLite error: {str(e)}")
- @mcp.tool()
- def delete_data(table_name: str, condition: str) -> str:
- """Delete data from a specified table.
- Args:
- table_name: Name of the table to delete data from.
- condition: The condition for which rows to delete (e.g., "id = 1").
- Returns:
- A message indicating success or failure.
- """
- if not DB_PATH.exists():
- raise FileNotFoundError(f"Messages database not found at: {DB_PATH}")
- with SQLiteConnection(DB_PATH) as conn:
- cursor = conn.cursor()
- try:
- sql = f"DELETE FROM {table_name} WHERE {condition}"
- cursor.execute(sql)
- conn.commit() # Commit the transaction
- return f"Data deleted successfully from '{table_name}' where {condition}."
- except sqlite3.Error as e:
- raise ValueError(f"SQLite error: {str(e)}")
复制代码 初始化数据库
- sqlite3 c:\users\user\my.db
复制代码 编译项目文件
- uv run --with fastmcp --with uvicorn fastmcp run E:/github/sqlite-explorer-fastmcp-mcp-server/sqlite_explorer.py
复制代码 在cursor里添加mcp server
- {
- "mcpServers": {
- "sqlite-explorer": {
- "command": "uv",
- "args": [
- "run",
- "--with",
- "fastmcp",
- "--with",
- "uvicorn",
- "fastmcp",
- "run",
- "E:/github/sqlite-explorer-fastmcp-mcp-server/sqlite_explorer.py"
- ],
- "env": {
- "SQLITE_DB_PATH": "c:/users/user/my.db"
- }
- }
- }
- }
复制代码 添加后,将它改为开启状态,绿色圆点
在cursor的chat里就可以对话了
- 它在大模型(mcp client)翻译后会与你本地配置的mcp server通讯
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