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AT Bridge

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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.

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About

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

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

from github.com/zeng-andrew/at_bridge

Installing AT Bridge

This server has no published package — it is built from source. Open the repository and follow its README.

▸ github.com/zeng-andrew/at_bridge

FAQ

Is AT Bridge MCP free?

Yes, AT Bridge MCP is free — one-click install via Unyly at no cost.

Does AT Bridge need an API key?

No, AT Bridge runs without API keys or environment variables.

Is AT Bridge hosted or self-hosted?

Self-hosted: the server runs locally on your machine via the install command above.

How do I install AT Bridge in Claude Desktop, Claude Code or Cursor?

Open AT Bridge on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.

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