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lw-ble-mcp — 轻量级蓝牙调试 MCP Server

lw-ble-mcp 是一个面向 AI Agent 的轻量级蓝牙低功耗(BLE)调试 MCP 服务器。基于 MCP Python SDK(FastMCP)与 bleak 构建,以 lw_ble_* 前缀提供 21 个工具:扫描、连接、GATT 读写、描述符访问、MTU 查询、通知订阅、一键设备侦查(lw_ble_dump)与引擎诊断(lw_ble_engine_status)。

核心特性:连接永不挂死(全部原生调用在专用 I/O 事件循环上运行,带硬超时)· 下划线工具名兼容广泛 MCP 客户端 · 分层测试体系(76 个用例,含真机回环验证)。

工具标识统一使用 lw_ble_ 前缀与下划线风格:lw(lightweight,轻量级)沿用嵌入式领域惯例(如 lwIP),ble 明确标注协议为蓝牙低功耗。命名刻意保持独立命名空间,避免与常见 ble_* 工具名冲突。

lw-ble-mcp is a lightweight Bluetooth Low Energy (BLE) debug MCP server for AI agents. Built on the MCP Python SDK (FastMCP) and bleak, it exposes 21 tools under the lw_ble_* prefix: scan, connect, GATT read/write, descriptor access, MTU query, notification subscription, one-shot device recon (lw_ble_dump), and engine diagnostics (lw_ble_engine_status).

Key features: connect never hangs (all native calls run on a dedicated I/O event loop with hard timeouts) · underscore tool names for broad MCP-client compatibility · a layered test suite (76 cases, including real-hardware echo-loop verification).

设计要点

关注点

实现

连接边界保护

全部 bleak 调用跑在独立线程的专用事件循环上,外层用 asyncio.wait_for 包裹,卡死也能真正超时返回

客户端兼容性

工具名一律用下划线(lw_ble_scan),避免点号工具名与部分 MCP 网关冲突

错误可诊断

区分 entity_not_found / operation_timeout / link_not_connected / internal_error 等错误码

依赖

使用最新的 bleak 3.x

Related MCP server: blew BLE MCP

安装

方式一:PyPI 安装(推荐)

pip install lw-ble-mcp

方式二:源码安装

pip install -r requirements.txt

在 Cursor 中配置

编辑全局 C:\Users\Administrator\.cursor\mcp.json(PyPI 安装后可直接用命令名):

{
  "mcpServers": {
    "ble": {
      "type": "stdio",
      "command": "ble_mcp",
      "args": []
    }
  }
}

源码运行时把 command 改为你的 Python 路径、args 用模块方式:

{
  "mcpServers": {
    "ble": {
      "type": "stdio",
      "command": "D:/DevTools/Python/v314/python.exe",
      "args": ["-m", "ble_mcp"]
    }
  }
}

配置后重启 Cursor。

工具列表

扫描

工具

说明

lw_ble_scan

启动后台扫描(支持 name_filter / service_uuid),返回 scan_id

lw_ble_scan_poll

非阻塞获取扫描结果

lw_ble_scan_stop

提前停止扫描

lw_ble_scan_list

列出所有扫描

连接

工具

说明

lw_ble_connect

连接外设(带硬超时,不挂死),返回 connection_id

lw_ble_disconnect

断开连接

lw_ble_connection_status

查询单个连接状态

lw_ble_connection_list

列出所有连接

GATT 读写

工具

说明

lw_ble_discover

枚举服务的特征/描述符

lw_ble_read

读 GATT 特征(返回 base64 + hex)

lw_ble_write

写 GATT 特征(data_b64 或 data_hex)

lw_ble_read_descriptor

按句柄读 GATT 描述符

lw_ble_write_descriptor

按句柄写 GATT 描述符

lw_ble_mtu

查询协商 MTU

通知订阅

工具

说明

lw_ble_subscribe / lw_ble_unsubscribe

订阅/取消订阅通知

lw_ble_poll_notifications

非阻塞拉取通知缓冲

lw_ble_wait_notification

阻塞等待下一条通知

lw_ble_subscription_list

列出订阅

设备侦查与引擎诊断

工具

说明

lw_ble_dump

一键侦查:服务表 + 全部可读特征值 + MTU(单个调用完成设备摸底)

lw_ble_engine_status

引擎资源状态:连接/扫描/订阅计数、I/O 线程健康度

信号强度(RSSI)通过 lw_ble_scan / lw_ble_scan_poll 返回的每个设备记录获取。不提供独立的 RSSI 工具,因为 Windows 的 WinRT API 不支持从已建立连接中读取 RSSI。

测试

测试体系(常规/边界/参数/连接/稳定性/压力)详见 tests/README.md

pip install -r requirements-dev.txt
pytest          # mock 测试(无需硬件)
pytest -m hw    # 真机测试(需 HP_RDTS_P 在线)

直接运行(冒烟测试)

python -m ble_mcp

MCP stdio server 会等待 stdin 的协议消息。可用 npx @modelcontextprotocol/inspector python -m ble_mcp 进行图形化调试。

本地开发运行

python -m ble_mcp

相关信息

项目

模块名

lw-ble-mcp

作者

linzhiwei(zevonlin)

邮箱

zevonlin@gmail.com

日期

2026-08-10

PyPI

https://pypi.org/project/lw-ble-mcp/

GitHub

https://github.com/zevonlin/lw-ble-mcp

项目主页

https://github.com/zevonlin

版本

v0.1.0

A
license - permissive license
-
quality - not tested
B
maintenance

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