50 lines
1.7 KiB
C#
50 lines
1.7 KiB
C#
using McpDotNet.Protocol.Types;
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using McpDotNet.Server;
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namespace TestServerWithHosting.Tools;
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/// <summary>
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/// This tool uses depenency injection and async method
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/// </summary>
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[McpToolType]
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public class SampleLlmTool
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{
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private readonly IMcpServer _server;
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public SampleLlmTool(IMcpServer server)
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{
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_server = server ?? throw new ArgumentNullException(nameof(server));
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}
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[McpTool(name: "sampleLLM", description: "Samples from an LLM using MCP's sampling feature")]
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public async Task<string> SampleLLM(
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[McpParameter(true, description: "The prompt to send to the LLM")] string prompt,
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[McpParameter(true, description: "Maximum number of tokens to generate")] int maxTokens,
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CancellationToken cancellationToken)
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{
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var samplingParams = CreateRequestSamplingParams(prompt ?? string.Empty, "sampleLLM", maxTokens);
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var sampleResult = await _server.RequestSamplingAsync(samplingParams, cancellationToken);
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return $"LLM sampling result: {sampleResult.Content.Text}";
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}
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private static CreateMessageRequestParams CreateRequestSamplingParams(string context, string uri, int maxTokens = 100)
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{
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return new CreateMessageRequestParams()
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{
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Messages = [new SamplingMessage()
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{
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Role = Role.User,
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Content = new Content()
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{
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Type = "text",
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Text = $"Resource {uri} context: {context}"
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}
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}],
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SystemPrompt = "You are a helpful test server.",
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MaxTokens = maxTokens,
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Temperature = 0.7f,
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IncludeContext = ContextInclusion.ThisServer
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};
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}
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}
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