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Ensure proper app init by providing App.CreateBuilder
Add demos for supported modes: hosting, plain, MCP
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19 files changed

+493
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‎Smith.sln‎

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@@ -1,10 +1,18 @@
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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 = 17.14.36221.1 d17.14
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VisualStudioVersion = 17.14.36221.1
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Smith", "src\Smith\Smith.csproj", "{728856C5-A241-6AD6-5CDE-1991FE2F10D7}"
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EndProject
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Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Demos", "Demos", "{02EA681E-C7D8-13C7-8484-4AC65E1B71E8}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "HostedDemo", "src\HostedDemo\HostedDemo.csproj", "{7A572273-B346-1CA7-67AE-DC4906060B7A}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SpectreDemo", "src\SpectreDemo\SpectreDemo.csproj", "{7C636145-4896-4FA2-BC7C-053AFDD6F6E9}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MCPDemo", "src\MCPDemo\MCPDemo.csproj", "{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E}"
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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
@@ -15,8 +23,28 @@ Global
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{728856C5-A241-6AD6-5CDE-1991FE2F10D7}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{728856C5-A241-6AD6-5CDE-1991FE2F10D7}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{728856C5-A241-6AD6-5CDE-1991FE2F10D7}.Release|Any CPU.Build.0 = Release|Any CPU
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{7A572273-B346-1CA7-67AE-DC4906060B7A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{7A572273-B346-1CA7-67AE-DC4906060B7A}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{7A572273-B346-1CA7-67AE-DC4906060B7A}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{7A572273-B346-1CA7-67AE-DC4906060B7A}.Release|Any CPU.Build.0 = Release|Any CPU
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{7C636145-4896-4FA2-BC7C-053AFDD6F6E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{7C636145-4896-4FA2-BC7C-053AFDD6F6E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{7C636145-4896-4FA2-BC7C-053AFDD6F6E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{7C636145-4896-4FA2-BC7C-053AFDD6F6E9}.Release|Any CPU.Build.0 = Release|Any CPU
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{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E}.Release|Any CPU.Build.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(NestedProjects) = preSolution
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{7A572273-B346-1CA7-67AE-DC4906060B7A} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
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{7C636145-4896-4FA2-BC7C-053AFDD6F6E9} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
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{63E9B9A8-3EC5-4C0F-B8E5-30C475B2275E} = {02EA681E-C7D8-13C7-8484-4AC65E1B71E8}
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {D5E491DA-619A-457D-BEBE-A137B0D9F527}
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EndGlobalSection
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EndGlobal

‎readme.md‎

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@@ -47,15 +47,20 @@ Example using Claude:
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```csharp
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#:package Smith@0.*
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var chat = new Anthropic.AnthropicClient(Throw.
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configuration["Claude:Key"] ?? throw new InvalidOperationException("Missing Claude:Key configuration."),
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var client = new Anthropic.AnthropicClient(Throw.
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Env.Get("Claude:Key") ?? throw new InvalidOperationException("Missing Claude:Key configuration."),
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services.GetRequiredService<IHttpClientFactory>().CreateClient("ai")))
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.UseLogging()
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.UseFunctionInvocation();
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var provider = services.BuildServiceProvider();
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var builder = App.CreateBuilder(args);
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builder.Services.AddChatClient(new );
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var app = builder.Build();
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var history = new List<ChatMessage> { new ChatMessage(ChatRole.System, Prompts.System) };
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var chat = provider.GetRequiredService<IChatClient>();
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var chat = app.Services.GetRequiredService<IChatClient>();
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var options = new ChatOptions
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{
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ModelId = "claude-sonnet-4-20250514",

‎samples/.github/chatmodes/math.chatmode.md‎

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---
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description: 'An Ask mode for math-related queries, which can render LaTeX equations.'
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tools: ['smith-mcp']
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---
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Actively use the #latex_to_image_markdown tool to render LaTeX equations in your responses as inline markdown images to enhance clarity and visual appeal. This tool is particularly useful for displaying mathematical equations, formulas, and other LaTeX-rendered content in a visually engaging manner.

‎samples/.github/prompts/latex.prompt.md‎

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---
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mode: ask
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---
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Showcase popular equations in LaTeX format, and ensure they are rendered as images in the response by using the `latex_to_image_markdown` tool.

‎samples/appsettings.json‎

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{
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"logging": {
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"logLevel": {
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"default": "Information",
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"Polly": "Warning",
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"System.Net.Http.HttpClient": "Warning",
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"Microsoft.AspNetCore": "Warning",
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"Microsoft.Extensions": "Warning",
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"Microsoft.Azure": "Warning",
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"Microsoft.Hosting": "Warning"
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}
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}
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}

‎samples/latex.cs‎

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#:package Smith@0.2.3
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#:package ModelContextProtocol@0.3.0-preview.*
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#:package Microsoft.Extensions.Http@9.*
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#:package SixLabors.ImageSharp@3.1.*
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using Smith;
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using System.ComponentModel;
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using ModelContextProtocol.Server;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.PixelFormats;
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using Microsoft.Extensions.Logging;
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var builder = Host.CreateApplicationBuilder(args);
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builder.Services.AddHttpClient();
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builder.Logging.AddConsole(consoleLogOptions =>
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{
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// Configure all logs to go to stderr
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consoleLogOptions.LogToStandardErrorThreshold = LogLevel.Trace;
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});
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builder.Services
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.AddMcpServer()
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.WithStdioServerTransport()
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.WithToolsFromAssembly();
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await builder.Build().RunAsync();
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[McpServerToolType]
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public class LaTeX(IHttpClientFactory httpFactory)
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{
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[McpServerTool, Description("Converts LaTeX equations into markdown-formatted images for display inline.")]
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public async Task<string> LatexToImageMarkdown(
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[Description("The LaTeX equation to render.")] string latex,
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[Description("Use dark mode by inverting the colors in the output.")] bool darkMode)
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{
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var colors = darkMode ? @"\bg{black}\fg{white}" : @"\bg{white}\fg{black}";
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var query = WebUtility.UrlEncode(@"\small\dpi{300}" + colors + latex);
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var url = $"https://latex.codecogs.com/png.image?{query}";
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using var client = httpFactory.CreateClient();
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using var response = await client.GetAsync(url);
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if (response.IsSuccessStatusCode)
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{
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using var image = Image.Load<Rgba32>(await response.Content.ReadAsStreamAsync());
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using var ms = new MemoryStream();
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image.SaveAsPng(ms);
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var base64 = Convert.ToBase64String(ms.ToArray());
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return
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$"""
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![{latex}](
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data:image/png;base64,{base64}
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)
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""";
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}
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else
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{
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return
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$"""
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```latex
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{latex}
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```
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> {response.ReasonPhrase}
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""";
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}
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}
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}

‎src/HostedDemo/HostedDemo.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<Import Project="..\Smith\Smith.props" />
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net10.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Anthropic" Version="3.7.1" />
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<PackageReference Include="Microsoft.Extensions.Http" Version="9.0.7" />
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<PackageReference Include="Spectre.Console" Version="0.50.0" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Smith\Smith.csproj" />
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</ItemGroup>
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<Import Project="..\Smith\Smith.targets" />
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</Project>

‎src/HostedDemo/Program.cs‎

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using Anthropic;
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const string Instructions =
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"""
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Your responses will be rendered using Spectre.Console.AnsiConsole.Write(new Markup(string text))).
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This means that you can use rich text formatting, colors, and styles in your responses, but you must
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ensure that the text is valid markup syntax.
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""";
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var builder = App.CreateBuilder(args);
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builder.Services.AddHttpClient();
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builder.Services
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.AddChatClient(services => new AnthropicClient(
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Throw.IfNullOrEmpty(Env.Get("ANTHROPIC_KEY")),
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services.GetRequiredService<IHttpClientFactory>().CreateClient()))
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.UseLogging()
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.UseFunctionInvocation();
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var app = builder.Build(async (IChatClient chat, CancellationToken token) =>
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{
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var history = new List<ChatMessage> { new(ChatRole.System, Instructions) };
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var options = new ChatOptions
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{
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ModelId = "claude-sonnet-4-20250514",
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MaxOutputTokens = 1000,
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Temperature = 0.7f,
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Tools = [AIFunctionFactory.Create(() => DateTime.Now, "get_datetime", "Gets the current date and time on the user's local machine.")]
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};
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AnsiConsole.MarkupLine($":robot: Ready");
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AnsiConsole.Markup($":person_beard: ");
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while (!token.IsCancellationRequested)
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{
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var input = Console.ReadLine()?.Trim();
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if (string.IsNullOrEmpty(input))
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continue;
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history.Add(new ChatMessage(ChatRole.User, input));
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try
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{
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var response = await AnsiConsole.Status().StartAsync(":robot: Thinking...",
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ctx => chat.GetResponseAsync(input, options));
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45+
history.AddRange(response.Messages);
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try
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{
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// Try rendering as formatted markup
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if (response.Text is { Length: > 0 })
50+
AnsiConsole.MarkupLine($":robot: {response.Text}");
51+
}
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catch (Exception)
53+
{
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// Fallback to escaped markup text if rendering fails
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AnsiConsole.MarkupLineInterpolated($":robot: {response.Text}");
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}
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58+
AnsiConsole.Markup($":person_beard: ");
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}
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catch (Exception e)
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{
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AnsiConsole.WriteException(e);
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}
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}
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66+
AnsiConsole.MarkupLine($":robot: Shutting down...");
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});
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Console.WriteLine("Powered by Smith");
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await app.RunAsync();

‎src/HostedDemo/appsettings.json‎

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{
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"logging": {
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"logLevel": {
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"default": "Information",
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"Polly": "Warning",
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"System.Net.Http.HttpClient": "Warning",
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"Microsoft.AspNetCore": "Warning",
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"Microsoft.Extensions": "Warning",
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"Microsoft.Azure": "Warning",
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"Microsoft.Hosting": "Warning"
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}
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}
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}

‎src/MCPDemo/MCPDemo.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<Import Project="..\Smith\Smith.props" />
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net10.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.Extensions.Http" Version="9.0.7" />
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<PackageReference Include="ModelContextProtocol" Version="0.3.0-preview.2" />
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<PackageReference Include="SixLabors.ImageSharp" Version="3.1.10" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Smith\Smith.csproj" />
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</ItemGroup>
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<Import Project="..\Smith\Smith.targets" />
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</Project>

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