MCP Servers

AT Bridge

MCP server that enables AI assistants to debug IoT modules by sending AT commands over serial ports, with a built-in knowledge base for chip platform commands.

README

AT Bridge

MCP server for AI-driven AT command debugging over serial port.

AT Bridge 是一个 Model Context Protocol 服务器，让 AI 助手能够通过 COM/串口直接与 IoT 模组通信，进行 AT 命令调试。内置可维护的芯片平台知识库，实测过的命令自动沉淀。

Features

串口通信 — 自动探测可用 COM 口，支持主流波特率，可配置校验位/流控
AT 命令调试 — 发送 AT 命令并解析响应，自动补全 AT 前缀
批量测试 — 一次性发送命令列表，自动分类 PASS/ERR/CME
知识库 — 按芯片平台分层存储 AT 命令（含语法、返回值含义、实测数据），支持搜索和持续积累
双层存储 — 包内 YAML 只读（随版本分发），用户数据写到 %APPDATA%（跨版本保留）

Quick Start

uv sync
uv run python main.py

MCP Configuration

{
  "mcpServers": {
    "at-bridge": {
      "command": "uv",
      "args": ["run", "--directory", "path/to/at_bridge", "python", "main.py"]
    }
  }
}

Tools

Serial Communication

Tool	Description
`at_list_ports`	枚举 COM/串口，含 VID/PID、制造商、描述
`at_auto_detect`	自动探测 — 扫描所有端口，试多种波特率，找出响应 AT 的设备
`at_configure`	配置波特率、数据位、校验位、停止位、流控
`at_open_port` / `at_close_port`	打开/关闭串口连接
`at_send_command`	发送单条 AT 命令，自动补全 `AT` 前缀，解析响应
`at_batch_test`	批量测试 — 一次发送命令列表，自动分类结果

Knowledge Base

Tool	Description
`at_knowledge_search`	按关键词/平台/标签搜索命令库
`at_knowledge_list`	列出全部命令，可按平台过滤
`at_knowledge_add`	添加/更新命令到指定芯片平台
`at_knowledge_chipsets`	查看可用的芯片平台列表
`at_knowledge_stats`	知识库统计：条目数、来源分布

Chipsets

芯片平台知识库位于 src/at_bridge/chipsets/，按平台分层：

文件	内容
`_3gpp.yaml`	3GPP 标准 AT 命令（49 条），只读基础库
`asr.yaml`	ASR 平台私有命令与平台特性
`quectel.yaml`	移远 EC200x 等私有命令（48 条）
`_custom.yaml`	用户自定义命令，自动创建于 `%APPDATA%/at-bridge/chipsets/`

加载顺序：_3gpp → 平台文件 → _custom（后者覆盖同名 key）。

Project Structure

at_bridge/
  main.py                    # Entry point — MCP server on stdio
  src/at_bridge/
    server.py                # MCP server: 12 tool definitions + handlers
    serial_handler.py        # Serial I/O + batch test engine
    knowledge_store.py       # YAML knowledge base CRUD with two-layer storage
    chipsets/                # Platform command libraries
      _3gpp.yaml / asr.yaml / quectel.yaml

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