serial-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| SERIAL_MCP_MAX_BUFFER | No | Maximum number of lines kept in the buffer. When exceeded, the oldest lines are discarded first. | unlimited |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| start_bufferingB | Start (or restart) the serial monitor on the given device. Args: device: Serial port path, e.g. /dev/ttyUSB0 or /dev/ttyACM0 baudrate: Baud rate for the serial connection (default 115200) |
| next_chunkB | Return the next batch of buffered serial output lines. Args: nlines: Maximum number of lines to return (default 50) pattern: Optional regex pattern to filter lines (only matching lines are returned) |
| stop_bufferingA | Stop the serial monitor. Buffered output remains readable via next_chunk. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 3 tools
Each tool has a clearly distinct purpose: start_buffering initiates monitoring, next_chunk reads buffered output, and stop_buffering terminates it. No overlap or ambiguity in selecting the right tool.
All names use snake_case, but start_buffering and stop_buffering follow a verb_noun pattern while next_chunk uses an adjective_noun pattern, creating a minor inconsistency. The deviation is small and still readable.
Three tools are sufficient for basic serial monitoring (start, read, stop), earning their place. However, a tool to list available serial ports or check status would make the set feel more complete without being excessive.
The surface covers the core lifecycle of starting, reading, and stopping a serial monitor. Minor gaps exist, such as no tool to list available serial devices or to write to the port, but these may be outside the stated monitoring purpose.