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| 1 | +using EverythingServer; |
| 2 | +using EverythingServer.Prompts; |
| 3 | +using EverythingServer.Tools; |
| 4 | +using Microsoft.Extensions.AI; |
| 5 | +using Microsoft.Extensions.DependencyInjection; |
| 6 | +using Microsoft.Extensions.Hosting; |
| 7 | +using Microsoft.Extensions.Logging; |
| 8 | +using ModelContextProtocol; |
| 9 | +using ModelContextProtocol.Protocol.Types; |
| 10 | +using ModelContextProtocol.Server; |
| 11 | + |
| 12 | +var builder = Host.CreateApplicationBuilder(args); |
| 13 | +builder.Logging.AddConsole(consoleLogOptions => |
| 14 | +{ |
| 15 | + // Configure all logs to go to stderr |
| 16 | + consoleLogOptions.LogToStandardErrorThreshold = LogLevel.Trace; |
| 17 | +}); |
| 18 | + |
| 19 | +HashSet<string> subscriptions = []; |
| 20 | +var _minimumLoggingLevel = LoggingLevel.Debug; |
| 21 | + |
| 22 | +builder.Services |
| 23 | + .AddMcpServer() |
| 24 | + .WithStdioServerTransport() |
| 25 | + .WithTools<AddTool>() |
| 26 | + .WithTools<AnnotatedMessageTool>() |
| 27 | + .WithTools<EchoTool>() |
| 28 | + .WithTools<LongRunningTool>() |
| 29 | + .WithTools<PrintEnvTool>() |
| 30 | + .WithTools<SampleLlmTool>() |
| 31 | + .WithTools<TinyImageTool>() |
| 32 | + .WithPrompts<ComplexPromptType>() |
| 33 | + .WithPrompts<SimplePromptType>() |
| 34 | + .WithListResourceTemplatesHandler((ctx, ct) => |
| 35 | + { |
| 36 | + return Task.FromResult(new ListResourceTemplatesResult |
| 37 | + { |
| 38 | + ResourceTemplates = |
| 39 | + [ |
| 40 | + new ResourceTemplate { Name = "Static Resource", Description = "A static resource with a numeric ID", UriTemplate = "test://static/resource/{id}" } |
| 41 | + ] |
| 42 | + }); |
| 43 | + }) |
| 44 | + .WithReadResourceHandler((ctx, ct) => |
| 45 | + { |
| 46 | + var uri = ctx.Params?.Uri; |
| 47 | + |
| 48 | + if (uri is null || !uri.StartsWith("test://static/resource/")) |
| 49 | + { |
| 50 | + throw new NotSupportedException($"Unknown resource: {uri}"); |
| 51 | + } |
| 52 | + |
| 53 | + int index = int.Parse(uri["test://static/resource/".Length..]) - 1; |
| 54 | + |
| 55 | + if (index < 0 || index >= ResourceGenerator.Resources.Count) |
| 56 | + { |
| 57 | + throw new NotSupportedException($"Unknown resource: {uri}"); |
| 58 | + } |
| 59 | + |
| 60 | + var resource = ResourceGenerator.Resources[index]; |
| 61 | + |
| 62 | + if (resource.MimeType == "text/plain") |
| 63 | + { |
| 64 | + return Task.FromResult(new ReadResourceResult |
| 65 | + { |
| 66 | + Contents = [new TextResourceContents |
| 67 | + { |
| 68 | + Text = resource.Description!, |
| 69 | + MimeType = resource.MimeType, |
| 70 | + Uri = resource.Uri, |
| 71 | + }] |
| 72 | + }); |
| 73 | + } |
| 74 | + else |
| 75 | + { |
| 76 | + return Task.FromResult(new ReadResourceResult |
| 77 | + { |
| 78 | + Contents = [new BlobResourceContents |
| 79 | + { |
| 80 | + Blob = resource.Description!, |
| 81 | + MimeType = resource.MimeType, |
| 82 | + Uri = resource.Uri, |
| 83 | + }] |
| 84 | + }); |
| 85 | + } |
| 86 | + }) |
| 87 | + .WithSubscribeToResourcesHandler(async (ctx, ct) => |
| 88 | + { |
| 89 | + var uri = ctx.Params?.Uri; |
| 90 | + |
| 91 | + if (uri is not null) |
| 92 | + { |
| 93 | + subscriptions.Add(uri); |
| 94 | + |
| 95 | + await ctx.Server.RequestSamplingAsync([ |
| 96 | + new ChatMessage(ChatRole.System, "You are a helpful test server"), |
| 97 | + new ChatMessage(ChatRole.User, $"Resource {uri}, context: A new subscription was started"), |
| 98 | + ], |
| 99 | + options: new ChatOptions |
| 100 | + { |
| 101 | + MaxOutputTokens = 100, |
| 102 | + Temperature = 0.7f, |
| 103 | + }, |
| 104 | + cancellationToken: ct); |
| 105 | + } |
| 106 | + |
| 107 | + return new EmptyResult(); |
| 108 | + }) |
| 109 | + .WithUnsubscribeFromResourcesHandler((ctx, ct) => |
| 110 | + { |
| 111 | + var uri = ctx.Params?.Uri; |
| 112 | + if (uri is not null) |
| 113 | + { |
| 114 | + subscriptions.Remove(uri); |
| 115 | + } |
| 116 | + return Task.FromResult(new EmptyResult()); |
| 117 | + }) |
| 118 | + .WithGetCompletionHandler((ctx, ct) => |
| 119 | + { |
| 120 | + var exampleCompletions = new Dictionary<string, IEnumerable<string>> |
| 121 | + { |
| 122 | + { "style", ["casual", "formal", "technical", "friendly"] }, |
| 123 | + { "temperature", ["0", "0.5", "0.7", "1.0"] }, |
| 124 | + { "resourceId", ["1", "2", "3", "4", "5"] } |
| 125 | + }; |
| 126 | + |
| 127 | + if (ctx.Params is not { } @params) |
| 128 | + { |
| 129 | + throw new NotSupportedException($"Params are required."); |
| 130 | + } |
| 131 | + |
| 132 | + var @ref = @params.Ref; |
| 133 | + var argument = @params.Argument; |
| 134 | + |
| 135 | + if (@ref.Type == "ref/resource") |
| 136 | + { |
| 137 | + var resourceId = @ref.Uri?.Split("/").Last(); |
| 138 | + |
| 139 | + if (resourceId is null) |
| 140 | + { |
| 141 | + return Task.FromResult(new CompleteResult()); |
| 142 | + } |
| 143 | + |
| 144 | + var values = exampleCompletions["resourceId"].Where(id => id.StartsWith(argument.Value)); |
| 145 | + |
| 146 | + return Task.FromResult(new CompleteResult |
| 147 | + { |
| 148 | + Completion = new Completion { Values = [..values], HasMore = false, Total = values.Count() } |
| 149 | + }); |
| 150 | + } |
| 151 | + |
| 152 | + if (@ref.Type == "ref/prompt") |
| 153 | + { |
| 154 | + if (!exampleCompletions.TryGetValue(argument.Name, out IEnumerable<string>? value)) |
| 155 | + { |
| 156 | + throw new NotSupportedException($"Unknown argument name: {argument.Name}"); |
| 157 | + } |
| 158 | + |
| 159 | + var values = value.Where(value => value.StartsWith(argument.Value)); |
| 160 | + return Task.FromResult(new CompleteResult |
| 161 | + { |
| 162 | + Completion = new Completion { Values = [..values], HasMore = false, Total = values.Count() } |
| 163 | + }); |
| 164 | + } |
| 165 | + |
| 166 | + throw new NotSupportedException($"Unknown reference type: {@ref.Type}"); |
| 167 | + }) |
| 168 | + .WithSetLoggingLevelHandler(async (ctx, ct) => |
| 169 | + { |
| 170 | + if (ctx.Params?.Level is null) |
| 171 | + { |
| 172 | + throw new McpException("Missing required argument 'level'"); |
| 173 | + } |
| 174 | + |
| 175 | + _minimumLoggingLevel = ctx.Params.Level; |
| 176 | + |
| 177 | + await ctx.Server.SendNotificationAsync("notifications/message", new |
| 178 | + { |
| 179 | + Level = "debug", |
| 180 | + Logger = "test-server", |
| 181 | + Data = $"Logging level set to {_minimumLoggingLevel}", |
| 182 | + }, cancellationToken: ct); |
| 183 | + |
| 184 | + return new EmptyResult(); |
| 185 | + }) |
| 186 | + ; |
| 187 | + |
| 188 | +builder.Services.AddSingleton(subscriptions); |
| 189 | +builder.Services.AddHostedService<SubscriptionMessageSender>(); |
| 190 | +builder.Services.AddHostedService<LoggingUpdateMessageSender>(); |
| 191 | + |
| 192 | +builder.Services.AddSingleton<Func<LoggingLevel>>(_ => () => _minimumLoggingLevel); |
| 193 | + |
| 194 | +await builder.Build().RunAsync(); |
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