Un servidor del Protocolo de Contexto de Modelo (MCP) para la comunicación por puerto serie, que permite a los LLM interactuar con dispositivos de hardware a través de conexiones serie.
Listar puertos serie disponibles
Abrir/cerrar conexiones de puerto serie
Leer y escribir datos en puertos serie
Controlar señales serie (DTR, RTS, CTS, DSR, DCD)
Soporte para velocidades en baudios, bits de datos, bits de parada y paridad personalizados
Formatos de salida JSON y Markdown
Related MCP server: UART MCP Server
# Install from PyPI (when published)
pip install serial-mcp-new# Run with stdio transport (default, for local use)
serial-mcp "mcpServers": {
"ssh-mcp": {
"command": "C:\\Users\\DELL\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python311\\Scripts\\serial-mcp.exe",
"args": [],
"env": {}
}
},Herramienta | Descripción |
| Listar todos los puertos serie disponibles |
| Abrir una conexión de puerto serie |
| Cerrar una conexión de puerto serie |
| Escribir datos en un puerto serie |
| Leer datos de un puerto serie |
| Establecer estados de señales de control |
| Leer estados actuales de las señales |
| Listar todas las conexiones activas |
Listar puertos disponibles:
serial_list_ports()Abrir una conexión:
serial_open(port="COM3", baud_rate=115200)Escribir datos:
serial_write(connection_id="conn_1", data="Hello, device!")Leer respuesta:
serial_read(connection_id="conn_1", timeout=2.0)Cerrar al finalizar:
serial_close(connection_id="conn_1")Python 3.10+
mcp >= 1.6.1
pyserial >= 3.5
pydantic >= 2.0.0
MIT
Close a serial port connection.
Closes the specified serial port connection and releases resources. The connection ID becomes invalid after closing.
Args: params (ClosePortInput): Validated input parameters containing: - connection_id (str): Connection ID returned by serial_open
Returns: str: Success message or error message.
Success response: "Connection closed: conn_1" Error response: "Error: Connection 'conn_1' not found"
Inputs: params (required). Returns: result
Read the current state of serial port signals.
Returns the current state of all control signals including input signals (CTS, DSR, DCD) and output signals (DTR, RTS).
Args: params (GetSignalsInput): Validated input parameters containing: - connection_id (str): Connection ID returned by serial_open - response_format (ResponseFormat): Output format (default: 'markdown')
Returns: str: Formatted signal states or error message.
Success format for JSON: { "connection_id": "conn_1", "dtr": true, "rts": false, "cts": true, "dsr": true, "dcd": false }
Error response: "Error: Connection 'conn_1' not found or not open"
Inputs: params (required). Returns: result
List all active serial port connections.
Returns information about all currently open serial port connections.
Args: params (ListConnectionsInput): Validated input parameters containing: - response_format (ResponseFormat): Output format (default: 'markdown')
Returns: str: Formatted list of connections or empty message.
Success format for JSON: [ { "id": "conn_1", "port": "COM3", "baud_rate": 9600, "path": "COM3", "is_open": true, "created_at": "2024-01-15T10:30:00Z" } ]
Error response: "No active connections"
Inputs: params (required). Returns: result
List all available serial ports on the system.
This tool scans the system for available serial ports and returns detailed information about each port including device path, manufacturer, and serial number.
Args: params (ListPortsInput): Validated input parameters containing: - response_format (ResponseFormat): Output format (default: 'markdown')
Returns: str: Formatted list of serial ports.
Success response format: For JSON: Array of port objects with path, manufacturer, serialNumber, etc. For Markdown: Formatted list with port details
Error response: "Error: "
Inputs: params (required). Returns: result
Open a serial port connection.
Opens a new serial port connection with specified parameters. Returns a connection ID that must be used for subsequent operations on this port.
Args: params (OpenPortInput): Validated input parameters containing: - port (str): Serial port path (e.g., 'COM3', '/dev/ttyUSB0') - baud_rate (int): Baud rate (default: 9600) - data_bits (int): Data bits, 5-8 (default: 8) - stop_bits (float): Stop bits, 1.0-2.0 (default: 1.0) - parity (str): Parity: 'N', 'E', or 'O' (default: 'N')
Returns: str: Connection ID or error message.
Success response: "Connection opened: conn_1" Error response: "Error: "
Inputs: params (required). Returns: result
Read data from a serial port connection.
Reads available data from the serial port up to the specified maximum bytes. Times out after the specified timeout period if no data is available.
Args: params (ReadDataInput): Validated input parameters containing: - connection_id (str): Connection ID returned by serial_open - max_bytes (int): Maximum bytes to read (default: 1024, max: 65536) - timeout (float): Read timeout in seconds (default: 1.0) - encoding (str): Text encoding (default: 'utf-8') - response_format (ResponseFormat): Output format (default: 'markdown')
Returns: str: Formatted data or error message.
Success format for JSON: { "connection_id": "conn_1", "bytes_read": 42, "hex": "48656c6c6f", "data": "Hello", "timestamp": "2024-01-15T10:30:00Z" }
Error response: "Error: Connection 'conn_1' not found or not open"
Inputs: params (required). Returns: result
Set control signal states on a serial port connection.
Sets the DTR (Data Terminal Ready) and/or RTS (Request To Send) control signals.
Args: params (SetSignalsInput): Validated input parameters containing: - connection_id (str): Connection ID returned by serial_open - dtr (Optional[bool]): DTR signal state (True=HIGH, False=LOW, None=unchanged) - rts (Optional[bool]): RTS signal state (True=HIGH, False=LOW, None=unchanged)
Returns: str: Success message or error message.
Success response: "Signals set on conn_1: DTR=HIGH, RTS=LOW" Error response: "Error: Connection 'conn_1' not found or not open"
Inputs: params (required). Returns: result
Write data to a serial port connection.
Writes the specified data string to the serial port using the specified encoding.
Args: params (WriteDataInput): Validated input parameters containing: - connection_id (str): Connection ID returned by serial_open - data (str): Data to write as a string - encoding (str): Text encoding (default: 'utf-8') - timeout (float): Write timeout in seconds (default: 5.0)
Returns: str: Success message with bytes written or error message.
Success response: "Wrote 12 bytes to conn_1" Error response: "Error: Connection 'conn_1' not found or not open"
Inputs: params (required). Returns: result
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Scored across 8 tools
Each tool targets a distinct operation on serial ports: opening, closing, listing ports/connections, reading, writing, and getting/setting signals. There is no ambiguity between them.
All tools follow a consistent 'serial_verb' pattern (e.g., serial_open, serial_read, serial_write, serial_close, etc.), making it easy to predict tool names.
With 8 tools covering connection management, data I/O, and signal control, the count is well-scoped for a serial port server. No tool feels unnecessary or missing.
The toolset covers the core operations: open, close, list ports, list connections, read, write, get/set signals. A potential gap is flushing buffers or handling break conditions, but these are advanced and not essential.
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