Let AI agents interact with serial devices — list ports, connect, send, and read.
Connect Runs on your machine
claude mcp add serial-mcp-server -e SERIAL_MCP_MAX_CONNECTIONS=<SERIAL_MCP_MAX_CONNECTIONS> -e SERIAL_MCP_PLUGINS=<SERIAL_MCP_PLUGINS> -e SERIAL_MCP_MIRROR=<SERIAL_MCP_MIRROR> -e SERIAL_MCP_MIRROR_LINK=<SERIAL_MCP_MIRROR_LINK> -e SERIAL_MCP_TOOL_SEPARATOR=<SERIAL_MCP_TOOL_SEPARATOR> -- uvx serial-mcp-server==0.1.3{
"mcpServers": {
"serial-mcp-server": {
"command": "uvx",
"args": [
"serial-mcp-server==0.1.3"
],
"env": {
"SERIAL_MCP_MAX_CONNECTIONS": "<SERIAL_MCP_MAX_CONNECTIONS>",
"SERIAL_MCP_PLUGINS": "<SERIAL_MCP_PLUGINS>",
"SERIAL_MCP_MIRROR": "<SERIAL_MCP_MIRROR>",
"SERIAL_MCP_MIRROR_LINK": "<SERIAL_MCP_MIRROR_LINK>",
"SERIAL_MCP_TOOL_SEPARATOR": "<SERIAL_MCP_TOOL_SEPARATOR>"
}
}
}
}{
"mcpServers": {
"serial-mcp-server": {
"command": "uvx",
"args": [
"serial-mcp-server==0.1.3"
],
"env": {
"SERIAL_MCP_MAX_CONNECTIONS": "<SERIAL_MCP_MAX_CONNECTIONS>",
"SERIAL_MCP_PLUGINS": "<SERIAL_MCP_PLUGINS>",
"SERIAL_MCP_MIRROR": "<SERIAL_MCP_MIRROR>",
"SERIAL_MCP_MIRROR_LINK": "<SERIAL_MCP_MIRROR_LINK>",
"SERIAL_MCP_TOOL_SEPARATOR": "<SERIAL_MCP_TOOL_SEPARATOR>"
}
}
}
}{
"servers": {
"serial-mcp-server": {
"type": "stdio",
"command": "uvx",
"args": [
"serial-mcp-server==0.1.3"
],
"env": {
"SERIAL_MCP_MAX_CONNECTIONS": "<SERIAL_MCP_MAX_CONNECTIONS>",
"SERIAL_MCP_PLUGINS": "<SERIAL_MCP_PLUGINS>",
"SERIAL_MCP_MIRROR": "<SERIAL_MCP_MIRROR>",
"SERIAL_MCP_MIRROR_LINK": "<SERIAL_MCP_MIRROR_LINK>",
"SERIAL_MCP_TOOL_SEPARATOR": "<SERIAL_MCP_TOOL_SEPARATOR>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
SERIAL_MCP_MAX_CONNECTIONSOptional | Maximum simultaneous open serial connections (default 10) |
SERIAL_MCP_PLUGINSOptional | Plugin policy: 'all' or comma-separated plugin names. Unset = disabled. |
SERIAL_MCP_MIRROROptional | PTY mirror mode: 'off' (default), 'ro' (read-only), or 'rw' (read-write). macOS/Linux only. |
SERIAL_MCP_MIRROR_LINKOptional | Base path for PTY symlinks (default /tmp/serial-mcp when mirror is enabled). Connections get numbered: /tmp/serial-mcp0, /tmp/serial-mcp1, etc. |
SERIAL_MCP_TOOL_SEPARATOROptional | Tool name separator character (default '.'). Set to '_' for clients that reject dots (e.g. Cursor). |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 7 Mar 2026 |
| Last updated | 7 Mar 2026 |
| Registry name | io.github.es617/serial-mcp-server |
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