mpc-csharp-semantickernel

Okay, here's an example demonstrating how to use Microsoft Semantic Kernel with OpenAI and a hypothetical "MCP Server" (assuming MCP stands for something like "My Custom Processing Server" or "Message Control Protocol Server"). Since "MCP Server" is vague, I'll make some assumptions about its functionality and how it might interact with Semantic Kernel. You'll need to adapt this to your specific MCP Server's capabilities. **Conceptual Overview** The core idea is to use Semantic Kernel to orchestrate interactions between OpenAI (for language understanding and generation) and your MCP Server (for specialized processing, data retrieval, or control actions). **Assumptions about the MCP Server** * **API Endpoint:** It exposes an API endpoint (e.g., REST API) for receiving requests and sending responses. * **Functionality:** Let's assume it can perform a specific task, like: * **Data Lookup:** Retrieve information from a database based on a query. * **System Control:** Execute a command on a system. * **Message Routing:** Route a message to a specific destination. * **Input/Output:** It expects structured input (e.g., JSON) and returns structured output (e.g., JSON). **Example Scenario: Smart Home Control** Let's imagine an MCP Server that controls smart home devices. We want to use Semantic Kernel and OpenAI to allow users to control their home with natural language. **Code Example (C#)** ```csharp using Microsoft.SemanticKernel; using Microsoft.SemanticKernel.Connectors.OpenAI; using System.Net.Http; using System.Text; using System.Text.Json; using System.Threading.Tasks; public class SmartHomePlugin { private readonly HttpClient _httpClient; private readonly string _mcpServerEndpoint; public SmartHomePlugin(string mcpServerEndpoint) { _httpClient = new HttpClient(); _mcpServerEndpoint = mcpServerEndpoint; } [KernelFunction, Description("Controls a smart home device.")] public async Task<string> ControlDevice( [Description("The device to control (e.g., lights, thermostat).")] string device, [Description("The action to perform (e.g., turn on, turn off, set temperature).")] string action, [Description("The value to set (e.g., 22 for temperature).")] string value = "" ) { // 1. Prepare the request to the MCP Server var requestData = new { device = device, action = action, value = value }; string jsonRequest = JsonSerializer.Serialize(requestData); var content = new StringContent(jsonRequest, Encoding.UTF8, "application/json"); // 2. Send the request to the MCP Server HttpResponseMessage response = await _httpClient.PostAsync(_mcpServerEndpoint, content); // 3. Handle the response from the MCP Server if (response.IsSuccessStatusCode) { string jsonResponse = await response.Content.ReadAsStringAsync(); // Deserialize the JSON response (assuming MCP Server returns JSON) try { var responseObject = JsonSerializer.Deserialize<Dictionary<string, string>>(jsonResponse); return responseObject?["status"] ?? "Unknown status"; // Assuming MCP returns a "status" field } catch (JsonException ex) { Console.WriteLine($"Error deserializing MCP Server response: {ex.Message}"); return "Error processing MCP Server response."; } } else { Console.WriteLine($"MCP Server request failed: {response.StatusCode}"); return $"MCP Server request failed with status code: {response.StatusCode}"; } } } public class Example { public static async Task Main() { // 1. Configure Semantic Kernel string apiKey = "YOUR_OPENAI_API_KEY"; string orgId = "YOUR_OPENAI_ORG_ID"; // Optional Kernel kernel = Kernel.CreateBuilder() .AddOpenAIChatCompletion("gpt-3.5-turbo", apiKey, orgId) // Or "gpt-4" .Build(); // 2. Define the MCP Server endpoint string mcpServerEndpoint = "http://your-mcp-server.com/api/control"; // Replace with your actual endpoint // 3. Import the SmartHomePlugin var smartHomePlugin = new SmartHomePlugin(mcpServerEndpoint); kernel.ImportPluginFromObject(smartHomePlugin, "SmartHome"); // 4. Create a Semantic Function (Prompt) string prompt = @" Control the smart home device. Device: {{$device}} Action: {{$action}} Value: {{$value}} {{SmartHome.ControlDevice $device $action $value}} "; var smartHomeFunction = kernel.CreateFunction(prompt); // 5. Run the Semantic Function with user input var arguments = new KernelArguments { ["device"] = "lights", ["action"] = "turn on", ["value"] = "" }; var result = await smartHomeFunction.InvokeAsync(kernel, arguments); Console.WriteLine($"Result: {result.GetValue<string>()}"); // Example 2: More natural language input using OpenAI to extract parameters string naturalLanguagePrompt = "Turn on the living room lights."; // Define a prompt to extract device, action, and value from the natural language input string extractionPrompt = @" Extract the device, action, and value from the following text: Text: {{$text}} Device: Action: Value: "; var extractionFunction = kernel.CreateFunction(extractionPrompt); var extractionResult = await extractionFunction.InvokeAsync(kernel, new KernelArguments { ["text"] = naturalLanguagePrompt }); string extractedText = extractionResult.GetValue<string>()!; // Parse the extracted text (this is a simplified example; you might need more robust parsing) string extractedDevice = extractedText.Split("Device:")[1].Split("Action:")[0].Trim(); string extractedAction = extractedText.Split("Action:")[1].Split("Value:")[0].Trim(); string extractedValue = extractedText.Split("Value:")[1].Trim(); Console.WriteLine($"Extracted Device: {extractedDevice}"); Console.WriteLine($"Extracted Action: {extractedAction}"); Console.WriteLine($"Extracted Value: {extractedValue}"); // Now use the extracted parameters with the SmartHome.ControlDevice function var controlArguments = new KernelArguments { ["device"] = extractedDevice, ["action"] = extractedAction, ["value"] = extractedValue }; var controlResult = await smartHomeFunction.InvokeAsync(kernel, controlArguments); Console.WriteLine($"Control Result: {controlResult.GetValue<string>()}"); } } ``` **Explanation:** 1. **`SmartHomePlugin`:** * This class represents a Semantic Kernel plugin that interacts with the MCP Server. * It takes the MCP Server endpoint as a constructor parameter. * The `ControlDevice` function is decorated with `[KernelFunction]` to make it available to Semantic Kernel. * It constructs a JSON request based on the input parameters (`device`, `action`, `value`). * It sends a POST request to the MCP Server. * It handles the response from the MCP Server, deserializing the JSON and returning a status message. Error handling is included. 2. **`Example.Main`:** * **Configure Semantic Kernel:** Sets up the Semantic Kernel with your OpenAI API key and organization ID. * **Define MCP Server Endpoint:** Replace `"http://your-mcp-server.com/api/control"` with the actual URL of your MCP Server's API endpoint. * **Import Plugin:** Creates an instance of the `SmartHomePlugin` and imports it into the Semantic Kernel. This makes the `ControlDevice` function available for use in prompts. * **Create Semantic Function (Prompt):** Defines a prompt that uses the `SmartHome.ControlDevice` function. The prompt takes `device`, `action`, and `value` as input parameters. * **Run Semantic Function:** Creates a `KernelArguments` object with the desired device, action, and value, and then invokes the semantic function. The result from the MCP Server is printed to the console. * **Natural Language Example:** Demonstrates how to use OpenAI to extract the device, action, and value from a natural language prompt. This allows users to control their smart home with more natural commands. A separate prompt is used for extraction. The extracted parameters are then used to call the `SmartHome.ControlDevice` function. **Key Points and Considerations:** * **MCP Server API:** The most important part is understanding the API of your MCP Server. You need to know the endpoint, the expected request format (JSON schema), and the format of the response. * **Error Handling:** The example includes basic error handling for network requests and JSON deserialization. You should add more robust error handling for production code. * **Security:** If your MCP Server requires authentication, you'll need to add authentication headers to the `HttpClient` requests. Never hardcode sensitive information like API keys directly in your code. Use environment variables or a secure configuration mechanism. * **Prompt Engineering:** The prompts are crucial for getting the desired behavior. Experiment with different prompts to improve the accuracy and reliability of the system. Consider using techniques like few-shot learning to provide examples to the language model. * **JSON Serialization/Deserialization:** The example uses `System.Text.Json`. You can use other JSON libraries like Newtonsoft.Json if you prefer. * **Dependency Injection:** For larger applications, consider using dependency injection to manage the `HttpClient` and other dependencies. * **Asynchronous Operations:** The example uses `async` and `await` for asynchronous operations. This is important for avoiding blocking the main thread and improving performance. * **Parameter Extraction:** The natural language example uses a simple string splitting approach to extract parameters. For more complex scenarios, you might need to use more sophisticated techniques like regular expressions or a dedicated natural language processing library. Semantic Kernel also offers more advanced techniques for parameter extraction. * **Semantic Kernel Plugins:** Consider breaking down your MCP Server functionality into multiple Semantic Kernel plugins for better organization and reusability. * **Testing:** Write unit tests to verify the functionality of your Semantic Kernel plugins and the interactions with the MCP Server. **How to Adapt This Example:** 1. **Replace Placeholders:** Replace `"YOUR_OPENAI_API_KEY"`, `"YOUR_OPENAI_ORG_ID"`, and `"http://your-mcp-server.com/api/control"` with your actual values. 2. **Implement MCP Server Interaction:** Modify the `SmartHomePlugin` to match the API of your MCP Server. Adjust the request format, response handling, and error handling accordingly. 3. **Customize Prompts:** Adjust the prompts to match the specific tasks you want to perform. 4. **Add Error Handling:** Implement more robust error handling to handle potential issues with the MCP Server or the OpenAI API. 5. **Add Security:** Implement appropriate security measures to protect your API keys and other sensitive information. **Chinese Translation of Key Concepts:** * **Microsoft Semantic Kernel:** 微软语义内核 (Wēiruǎn yǔyì kènèi) * **OpenAI:** 开放人工智能 (Kāifàng réngōng zhìnéng) * **MCP Server:** (You'll need to translate this based on what MCP stands for in your context. For example, if it's "My Custom Processing Server," you could translate it as: 我的自定义处理服务器 (Wǒ de zì dìngyì chǔlǐ fúwùqì)) * **Plugin:** 插件 (Chājiàn) * **Kernel Function:** 内核函数 (Nèihé hánshù) * **Prompt:** 提示 (Tíshì) * **Semantic Function:** 语义函数 (Yǔyì hánshù) * **API Endpoint:** 应用程序接口端点 (Yìngyòng chéngxù jiēkǒu duāndiǎn) * **Natural Language:** 自然语言 (Zìrán yǔyán) This comprehensive example should give you a solid foundation for using Microsoft Semantic Kernel with OpenAI and your MCP Server. Remember to adapt the code to your specific needs and to thoroughly test your implementation. Good luck!