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EllerbachEllerbach
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Adding Model Ccntrol Protocol (MCP) sample (#424)
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11 files changed

+464
-2
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11 files changed

+464
-2
lines changed

‎device-listing/Configuration.json‎

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"Name": "device",
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"Description": "Gpio, I2C, I2S, Spi, Pwm, Adc, Dac, 1-Wire, Serial"
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},
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{
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"Name": "amqp",
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"Description": "AMQP"
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"Name": "json",
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"Description": "Json"
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},
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{
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"Name": "mcp",
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"Description": "Model Context Protocol (MCP)"
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},
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{
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"Name": "mqtt",
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"Description": "MQTT"

‎samples/MQTT/category.txt‎

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mqtt
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networking
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networking

‎samples/McpAi/Light.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Device.Gpio;
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using System.Diagnostics;
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using nanoFramework.WebServer.Mcp;
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namespace McpAi
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{
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public static class Light
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{
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private static GpioPin _lightPin;
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private static string _location = "kitchen";
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public static void Initialize()
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{
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_lightPin = new GpioController().OpenPin(8, PinMode.Output);
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// Ensure the light is off initially
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_lightPin.Write(PinValue.High);
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}
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[McpServerTool("turn_on", "Turn on the light. Check the location to make sure it's the proper location first. Do not change location of this light to turn it on.")]
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public static void TurnOn()
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{
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if (_lightPin == null)
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{
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Initialize();
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}
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Debug.WriteLine($"Turning on the light at location: {_location}");
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_lightPin.Write(PinValue.Low);
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}
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[McpServerTool("turn_off", "Turn off the light. Check the location to make sure it's the proper location first. Do not change location of this light to turn it off.")]
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public static void TurnOff()
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{
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if (_lightPin == null)
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{
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Initialize();
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}
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Debug.WriteLine($"Turning off the light at location: {_location}");
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_lightPin.Write(PinValue.High);
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}
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[McpServerTool("get_location", "Get the location of the light. Check this before switching a light on or off.")]
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public static string GetLocation()
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{
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Debug.WriteLine($"Getting the location of the light: {_location}");
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return _location;
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}
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[McpServerTool("set_location", "Change the location of the light. Do not change the location of the light unless the user ask you to change the location.")]
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public static void SetLocation(string location)
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{
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if (string.IsNullOrEmpty(location))
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{
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throw new ArgumentException("Location cannot be null or empty.", nameof(location));
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}
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Debug.WriteLine($"Setting the location of the light to: {location}");
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_location = location;
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}
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}
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}

‎samples/McpAi/McpAi.nfproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="Current" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup Label="Globals">
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<NanoFrameworkProjectSystemPath>$(MSBuildExtensionsPath)\nanoFramework\v1.0\</NanoFrameworkProjectSystemPath>
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</PropertyGroup>
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<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.Default.props" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.Default.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectTypeGuids>{11A8DD76-328B-46DF-9F39-F559912D0360};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<ProjectGuid>75022ce1-3597-477c-a4a0-cdcd06ec5e54</ProjectGuid>
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<OutputType>Exe</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<FileAlignment>512</FileAlignment>
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<RootNamespace>McpAi</RootNamespace>
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<AssemblyName>McpAi</AssemblyName>
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<TargetFrameworkVersion>v1.0</TargetFrameworkVersion>
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</PropertyGroup>
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<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.props" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.props')" />
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<ItemGroup>
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<Compile Include="Light.cs" />
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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<Compile Include="WiFi.cs" />
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</ItemGroup>
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<ItemGroup>
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<Reference Include="mscorlib">
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<HintPath>packages\nanoFramework.CoreLibrary.1.17.11\lib\mscorlib.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.Json">
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<HintPath>packages\nanoFramework.Json.2.2.199\lib\nanoFramework.Json.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.Runtime.Events">
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<HintPath>packages\nanoFramework.Runtime.Events.1.11.32\lib\nanoFramework.Runtime.Events.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.System.Collections">
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<HintPath>packages\nanoFramework.System.Collections.1.5.67\lib\nanoFramework.System.Collections.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.System.Text">
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<HintPath>packages\nanoFramework.System.Text.1.3.42\lib\nanoFramework.System.Text.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.WebServer">
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<HintPath>packages\nanoFramework.WebServer.Mcp.1.2.123\lib\nanoFramework.WebServer.dll</HintPath>
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</Reference>
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<Reference Include="nanoFramework.WebServer.Mcp">
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<HintPath>packages\nanoFramework.WebServer.Mcp.1.2.123\lib\nanoFramework.WebServer.Mcp.dll</HintPath>
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</Reference>
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<Reference Include="System.Device.Gpio">
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<HintPath>packages\nanoFramework.System.Device.Gpio.1.1.57\lib\System.Device.Gpio.dll</HintPath>
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</Reference>
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<Reference Include="System.Device.Wifi">
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<HintPath>packages\nanoFramework.System.Device.Wifi.1.5.133\lib\System.Device.Wifi.dll</HintPath>
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</Reference>
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<Reference Include="System.IO.Streams">
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<HintPath>packages\nanoFramework.System.IO.Streams.1.1.96\lib\System.IO.Streams.dll</HintPath>
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</Reference>
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<Reference Include="System.Net">
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<HintPath>packages\nanoFramework.System.Net.1.11.43\lib\System.Net.dll</HintPath>
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</Reference>
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<Reference Include="System.Net.Http">
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<HintPath>packages\nanoFramework.System.Net.Http.Server.1.5.196\lib\System.Net.Http.dll</HintPath>
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</Reference>
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<Reference Include="System.Threading">
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<HintPath>packages\nanoFramework.System.Threading.1.1.52\lib\System.Threading.dll</HintPath>
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</Reference>
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</ItemGroup>
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<ItemGroup>
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<None Include="packages.config" />
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</ItemGroup>
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<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
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<ProjectExtensions>
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<ProjectCapabilities>
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<ProjectConfigurationsDeclaredAsItems />
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</ProjectCapabilities>
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</ProjectExtensions>
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</Project>

‎samples/McpAi/McpAi.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.14.36212.18 d17.14
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "McpAi", "McpAi.nfproj", "{75022CE1-3597-477C-A4A0-CDCD06EC5E54}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Release|Any CPU.Build.0 = Release|Any CPU
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{75022CE1-3597-477C-A4A0-CDCD06EC5E54}.Release|Any CPU.Deploy.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {BFF956C2-216C-479F-B12A-1C423A0B080B}
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EndGlobalSection
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EndGlobal

‎samples/McpAi/Program.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Diagnostics;
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using System.Threading;
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using McpAi;
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using nanoFramework.Networking;
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using nanoFramework.WebServer;
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using nanoFramework.WebServer.Mcp;
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// Connect to WiFi (device-specific code)
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var connected = WifiNetworkHelper.ConnectDhcp(WiFi.Ssid, WiFi.Password, requiresDateTime: true, token: new CancellationTokenSource(60_000).Token);
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if (!connected)
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{
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Debug.WriteLine("Failed to connect to WiFi");
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return;
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}
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// Step 1: Discover and register MCP tools
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McpToolRegistry.DiscoverTools(new Type[] { typeof(Light) });
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Debug.WriteLine("MCP Tools discovered and registered.");
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// Step 2: Start WebServer with MCP controller
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// You can add more types if you also want to use it as a Web Server
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// Note: HTTPS and certs are also supported, see the pervious sections
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using (var server = new WebServer(80, HttpProtocol.Http, new Type[] { typeof(McpServerController) }))
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{ // Optional: Customize MCP server information and instructions
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// This will override the default server name "nanoFramework" and version "1.0.0"
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McpServerController.ServerName = "MyIoTDevice";
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McpServerController.ServerVersion = "2.1.0";
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// Optional: Customize instructions sent to AI agents
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// This will override the default instruction about single request limitation
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McpServerController.Instructions = "This is my custom IoT device. Please send requests one at a time and wait for responses. Supports GPIO control and sensor readings.";
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server.Start();
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Thread.Sleep(Timeout.Infinite);
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}
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‎samples/McpAi/Properties/AssemblyInfo.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("MCP AI Sample Application")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("McpAiSample")]
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[assembly: AssemblyCopyright("Copyright © 2025")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]

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