MCPD
MCP Server SDK for Microcontrollers — Expose ESP32/RP2040 hardware as AI-accessible tools via Model Context Protocol
What is MCPD?
MCPD is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to mcp server sdk for microcontrollers — expose esp32/rp2040 hardware as ai-accessible tools via model context protocol
MCP Server SDK for Microcontrollers — Expose ESP32/RP2040 hardware as AI-accessible tools via Model Context Protocol
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- MCP Server SDK for Microcontrollers — Expose ESP32/RP2040 ha
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx mcpdConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use MCPD
mcpd (MCP daemon) is a single-binary MCP server written in Rust that turns any executable script into an MCP tool. It scans a directory of scripts, reads their self-describing --help output to extract parameter definitions, and exposes each script as a named tool over HTTP JSON-RPC. It includes a built-in web dashboard, optional authentication, TLS support, and works with Claude Desktop, Cursor, and any MCP-compatible client.
Prerequisites
- macOS, Linux, or Windows operating system
- Docker (optional, for the container-based quick start)
- Executable scripts to expose as tools (shell scripts, Python, etc.)
- Claude Desktop or another MCP-compatible client
- curl or wget for downloading the binary
Download the mcpd binary
Download the prebuilt single binary for your platform from GitHub Releases and make it executable.
# macOS Apple Silicon
curl -Lo mcpd https://github.com/pouriya/mcpd/releases/latest/download/mcpd-aarch64-apple-darwin
chmod +x mcpd
# Linux x86_64
curl -Lo mcpd https://github.com/pouriya/mcpd/releases/latest/download/mcpd-x86_64-unknown-linux-musl
chmod +x mcpd
# Or use Docker
docker pull ghcr.io/pouriya/mcpd:latestCreate a scripts directory with your first tool
Create a directory for your scripts. Each executable file becomes an MCP tool. Scripts must respond to --help with JSON metadata on stdout and parameter definitions on stderr.
mkdir -p ~/mcpd-scripts
cat > ~/mcpd-scripts/date << 'EOF'
#!/bin/sh
if [ "$1" = "--help" ]; then
echo '{"description": "Get the current date and time"}'
echo '{"format": {"description": "Date format string e.g. +%Y-%m-%d", "type": "string", "default": ""}}' >&2
exit 0
fi
if [ -n "$format" ]; then
date "$format"
else
date
fi
EOF
chmod +x ~/mcpd-scripts/dateStart the mcpd server
Run mcpd pointing at your scripts directory. The server listens on port 1995 by default and opens a web dashboard.
./mcpd --script-root-directory ~/mcpd-scripts
# Or with Docker
docker run --rm -it -p 1995:1995 \
-v "$(pwd)/scripts:/var/lib/mcpd" \
ghcr.io/pouriya/mcpd:latestVerify via the web dashboard
Open http://localhost:1995 in your browser to see the web dashboard, browse available tools, and run test calls.
Add mcpd to Claude Desktop config
Configure Claude Desktop to connect to the running mcpd server using the HTTP transport URL.
{
"mcpServers": {
"mcpd": {
"url": "http://localhost:1995/api/mcp"
}
}
}MCPD Examples
Client configuration
Claude Desktop and Cursor configuration connecting to a locally running mcpd server via HTTP transport.
{
"mcpServers": {
"mcpd": {
"url": "http://localhost:1995/api/mcp"
}
}
}Prompts to try
Example prompts after exposing scripts as mcpd tools.
- "What tools are available in mcpd?"
- "Run the date tool with format +%Y-%m-%d"
- "Execute my system-info script and summarize the output"
- "Run the calculator tool with expression 42 * 17"
- "Check the key-value store for the entry named 'config'"Troubleshooting MCPD
Scripts are not appearing as tools
Ensure each script file is executable (chmod +x script) and returns valid JSON on stdout when called with --help. Parameter definitions must go to stderr. Run the script manually with --help to verify the output format matches mcpd's expectations.
Claude Desktop cannot connect to http://localhost:1995
By default mcpd binds to 127.0.0.1. Ensure mcpd is running before starting Claude Desktop, or set MCPD_HTTP_HOST=0.0.0.0 if connecting from a container. Check the port is not blocked by a firewall.
Permission denied when running the binary on macOS
macOS Gatekeeper may block unsigned binaries. Run: sudo xattr -rd com.apple.quarantine ./mcpd to remove the quarantine flag, then retry. You may also need to allow it in System Preferences > Security & Privacy.
Frequently Asked Questions about MCPD
What is MCPD?
MCPD is a Model Context Protocol (MCP) server that mcp server sdk for microcontrollers — expose esp32/rp2040 hardware as ai-accessible tools via model context protocol It connects AI assistants to external tools and data sources through a standardized interface.
How do I install MCPD?
Follow the installation instructions on the MCPD GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with MCPD?
MCPD works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is MCPD free to use?
Yes, MCPD is open source and available under the BSD-3-Clause license. You can use it freely in both personal and commercial projects.
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Quick Config Preview
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