FantasticAgent 1.1.3
dotnet add package FantasticAgent --version 1.1.3
NuGet\Install-Package FantasticAgent -Version 1.1.3
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="FantasticAgent" Version="1.1.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="FantasticAgent" Version="1.1.3" />
<PackageReference Include="FantasticAgent" />
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add FantasticAgent --version 1.1.3
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: FantasticAgent, 1.1.3"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package FantasticAgent@1.1.3
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=FantasticAgent&version=1.1.3
#tool nuget:?package=FantasticAgent&version=1.1.3
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
Fantastic Agent
A lightweight C# library for parallel LLM orchestration with native tool calling support. Run multiple providers simultaneously and compare their responses in real-time.
Why Fantastic Agent?
- Native tool calling - Simple reflection-based function registration that works across providers
- Event-driven streaming - Real-time response chunks from all providers
- Multi-provider support - Swap between Ollama, Claude, OpenAI without rewriting code
- Unopinionated architecture - Build agents your way without framework lock-in
Quick Start
// Create a thread with Ollama
OllamaThread ollama = new OllamaThread(
"localhost",
11434,
OllamaModel,
"You are a helpful assistant."
);
// Register function tools
ollama.DeclareFunctionTool(typeof(WebSearchProviders).GetMethod("BraveSearch"));
// Subscribe to events
ollama.AssistantReplyChunkReceived += (s, e) => Console.Write(e.Message);
// Send a message and get streaming response
await ollama.SendMessageAsync("Search for the latest AI news");
Demo
The WPF demo shows three LLM providers (Ollama, Claude, ChatGPT) responding to the same Arabic query in parallel, each making tool calls to BraveSearch and streaming results independently.
Current Status
- Native LLM support with tool calling
- Multi-provider parallel execution
- Event-driven streaming
- Usage Monitoring
- NuGet package at https://www.nuget.org/packages/fantasticagent/
- Full agent orchestration (figuring it out)
Supported Providers
- Ollama
- Claude (Anthropic)
- OpenAI/ChatGPT
- Gemini
- HugginFace, and Groq (as a direct inheritance from OpenAI responses api)
License
[MIT]
| Product | Versions Compatible and additional computed target framework versions. |
|---|---|
| .NET | net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed. |
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
-
net10.0
- No dependencies.
NuGet packages
This package is not used by any NuGet packages.
GitHub repositories
This package is not used by any popular GitHub repositories.