Pleisto.Flappy 是由一家国内公司推出的大语言人工智能开发中间件。其开发的主要目的是消除不同变成语言和不同知识背景以及不同开发目的程序员在开发LLM应用时遇到的瓶颈。目前支持的语言有TypeScript、JavaScript、Java/Kotlin、C#，未来还会有更多的语言支持。大家有兴趣可以去Github的主页上点一个Start呢 pleisto/flappy: Production-Ready LLM Agent SDK for Every Developer (github.com)

Pleisto.Flappy目前实现了自定义函数编排与执行以及LLM调用抽象。用户可以通过自行编写不同功能的函数，让LLM根据需求对其进行编排从而实现自动化执行。并且使用JsonSchema对LLM返回结果进行规范，以便作为参数传递给其他程序使用。

B - C#开发环境安装

要使用Pleisto.Flappy这个库进行开发，我们需要提前准备以下环境:

Visual Studio 2022
Windows 10 或者 Windows 11
LLM API以及Token

由于不需要在本地运行LLM语言，所以对本机硬件没有特别要求。

安装Visual Studio

首先，我们需要 VisualStudioSetup.exe 来安装VS2022，这个可以从微软官网下载。Visual Studio: 面向软件开发人员和 Teams 的 IDE 和代码编辑器 (microsoft.com)

为方便大家使用，我把它上传到了CSDN上: 【免费】VisualStudioSetup2022资源-CSDN文库

下载完成之后，双击进行安装。

C - Pleisto.Flappy 中间件的使用

创建工程

首先，我们创建一个命令行控制台工程。

Pleisto.Flappy 支持大多数主流.net版本。这里选择6.0即可

导入依赖

Pleisto.Flappy的预览版已经发布到Nuget Gallery上了，可以直接在VS中引用。

打开VS的NuGet包管理界面

输入Pleisto进行搜索，即可发现Pleisto.Flappy包。

编写代码


// See https://aka.ms/new-console-template for more information
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Linq;
using OpenAI_API;
using Pleisto.Flappy;
using Pleisto.Flappy.Interfaces;
using Pleisto.Flappy.LLM;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
 
// OpenAI APIKey
// 从环境变量读取，Token请自行准备
string OpenAIApiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY");
 
// OpenAI 模型
// 这边先使用 GPT-3.5-Turbo
const string OpenAIModel = "gpt-3.5-turbo";
 
// LLM 大语言API客户端
var gpt35 = new ChatGPT(new OpenAIAPI
{
    Auth = new APIAuthentication(apiKey: OpenAIApiKey),
    ApiUrlFormat = "https://openai.api2d.net/{0}/{1}",
    ApiVersion = "v1",
}, OpenAIModel, null);
 
// Flappy Agent
var flappyAgent = new FlappyAgent(new FlappyAgentConfig
{
    LLM = gpt35, // 确定使用的LLM
    Functions = new IFlappyFunction[] // 自定义函数
    {
        // 定义一个数据合成函数,让LLM帮我们完成部分事务
        new SynthesizedFunction<LLMArgs,LLMReturn>(new SynthesizedFunctionDefinition<LLMArgs, LLMReturn>
        {
            Name = "getMeta",
            Description=  "从诉讼全文中提取元数据.",
            Args = new LLMArgs(),
            ReturnType = new LLMReturn()
        }),
        // 定义一个本地执行函数，以给LLM提供数据
        new InvokeFunction<MetaArgs,MetaReturns>(new InvokeFunctionDefinition<MetaArgs, MetaReturns>
        {
            Name = "getLatestLawsuitsByPlaintiff",
            Description = "获取原告的最新诉讼",
            Args = new MetaArgs(),
            ReturnType = new MetaReturns(),
            Resolve= (args) =>
            {
               return Task.FromResult(new MetaReturns
                {
                   lawsuit = "As Alex Jones continues telling his Infowars audience about his money problems and pleads for them to buy his products, his own documents show life is not all that bad — his net worth is around $14 million and his personal spending topped $93,000 in July alone, including thousands of dollars on meals and entertainment. The conspiracy theorist and his lawyers file monthly financial reports in his personal bankruptcy case, and the latest one has struck a nerve with the families of victims of Sandy Hook Elementary School shooting. They're still seeking the $1.5 billion they won last year in lawsuits against Jones and his media company for repeatedly calling the 2012 massacre a hoax on his shows. “It is disturbing that Alex Jones continues to spend money on excessive household expenditures and his extravagant lifestyle when that money rightfully belongs to the families he spent years tormenting,” said Christopher Mattei, a Connecticut lawyer for the families. “The families are increasingly concerned and will continue to contest these matters in court.” In an Aug. 29 court filing, lawyers for the families said that if Jones doesn’t reduce his personal expenses to a “reasonable” level, they will ask the bankruptcy judge to bar him from “further waste of estate assets,” appoint a trustee to oversee his spending, or dismiss the bankruptcy case. On his Infowars show Tuesday, Jones said he’s not doing anything wrong."
                });
            }
        })
    }
}, null, null);
 
// 向LLM提出我们的需求
var data = (await flappyAgent.CreateExecutePlan("找到原告为张三的最新案件并返回它的元数据"));
Console.WriteLine($"====================== Final Result =========================");
Console.WriteLine(data.ToString());
Console.WriteLine($"====================== Final Result Of Data =========================");
 
internal class MetaArgs
{
 
}
 
/// <summary>
/// 为LLM提供数据
/// </summary>
internal class MetaReturns
{
    [Description("法律原文")]
    public string lawsuit { get; set; }
}
 
/// <summary>
/// LLM 执行参数
/// </summary>
internal class LLMArgs
{
    /// <summary>
    /// 诉讼原文
    /// </summary>
    [Description("诉讼原文")]
    public string plantiff { get; set; }
}
 
/// <summary>
/// LLM 执行结果
/// </summary>
[JsonObject(ItemRequired = Required.Always)]
internal class LLMReturn
{
    /// <summary>
    /// 判决
    /// </summary>
    [JsonConverter(typeof(StringEnumConverter))]
    [DefaultValue(Verdict.Unknown)]
    public Verdict verdict { get; set; } = Verdict.Unknown;
 
    /// <summary>
    /// 原告
    /// </summary>
    public string plaintiff { get; set; } = string.Empty;
 
    /// <summary>
    /// 被告人
    /// </summary>
    public string defendant { get; set; } = string.Empty;
 
    /// <summary>
    /// 判断选项
    /// </summary>
    [AllowNull]
    public string[] judgeOptions { get; set; } = Array.Empty<string>();
}
 
/// <summary>
/// 判决内容
/// </summary>
public enum Verdict
{    /// <summary>
     /// 未知
     /// </summary>
    Unknown,
    /// <summary>
    /// 无辜的
    /// </summary>
    Innocent,
 
    /// <summary>
    /// 有罪
    /// </summary>
    Guilty,
 
 
}

执行结果

由于LLM具有不确定性，有时候可能需要重试多次才能获取比较可靠的结果。

例子可以在CSDN进行下载【免费】Pleisto.FlappyLawTestExample资源-CSDN文库

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