UTCP for .NET 🚀

Complete .NET 10 implementation of the Universal Tool Calling Protocol (UTCP)

Production-ready UTCP implementation with full source conversion from the official Go reference implementation, plus advanced features like Ollama AI integration and consciousness bridge capabilities.

🌟 What is UTCP?

The Universal Tool Calling Protocol (UTCP) is a modern, protocol-agnostic standard for defining and calling tools across any communication layer. Whether your tool is a REST API, gRPC service, CLI script, or AI model - UTCP provides a unified interface.

Key Principles:

• ✅ No wrapper tax - tools work as-is
• ✅ Protocol agnostic - HTTP, WebSocket, CLI, anything
• ✅ AI-friendly - designed for LLM tool calling
• ✅ Secure by default - preserves existing security
• ✅ Scalable - from local scripts to distributed systems

🎯 Why .NET 10?

This implementation leverages .NET 10's cutting-edge features:

Feature	Benefit
Native AOT	10x faster startup, minimal memory (141MB typical)
Cross-platform	Same binary runs on Linux, Windows, macOS
Modern async	Native async/await, perfect for I/O-bound tools
Type safety	Strong typing prevents runtime errors
Performance	Near-zero CPU idle, instant response under load

Real-world performance:

• Memory: ~141MB
• CPU (idle): 0%
• CPU (4+ hours): 20 seconds total
• Startup: <100ms

📦 What's Included

Core Modules

Module	Description	Status
UTCP.Core	Core models and interfaces	✅ Complete
UTCP.CLI	Command-line tool interface	✅ Complete
UTCP.Auth	Authentication (API key, Basic, OAuth2)	✅ Complete
UTCP.Repository	Tool repository management	✅ Complete
UTCP.Tools	Tool definitions and search	✅ Complete
UTCP.Helpers	Utility functions	✅ Complete
UTCP.Transports	Transport layer implementations	✅ Complete

Transport Examples (15+)

All transport types from the official spec:

• ✅ HTTP/HTTPS - RESTful API calls
• ✅ WebSocket - Real-time bidirectional
• ✅ Server-Sent Events (SSE) - Server push
• ✅ Streamable HTTP - Chunked responses
• ✅ CLI/Terminal - Command execution
• ✅ Text-based - Simple text protocols
• ✅ TCP/UDP - Raw socket communication
• ✅ gRPC - High-performance RPC
• ✅ GraphQL - Query-based API
• ✅ MCP - Model Context Protocol
• ✅ WebRTC - Peer-to-peer
• ✅ Ollama - Local AI models (exclusive to .NET!)

Reference Implementation

Complete UTCP server example with:

• Multi-transport support (HTTP + WebSocket)
• Tool calling API
• Health endpoints
• Production-ready deployment

🚀 Quick Start

Prerequisites

• .NET 10 SDK
• (Optional) Ollama for AI integration

Installation

git clone https://github.com/barrersoftware/dotnet-utcp.git
cd dotnet-utcp
dotnet build

Usage Examples

1. Ask Ollama AI

cd src/UTCP.CLI
dotnet run -- --provider "write hello world in C#" --tool ask

# Specify a model
dotnet run -- --provider "explain async/await" --tool ask --model "qwen2.5-coder:32b"

2. HTTP Tool Calling

dotnet run -- --provider "https://api.example.com" --tool http-get

3. Execute CLI Commands

dotnet run -- --provider "ls -la" --tool cli-exec

4. Run UTCP Server

cd examples/utcp_server
dotnet run

# Server starts on http://0.0.0.0:8787
# Test: curl http://localhost:8787/health

🔧 Building a UTCP Service

using UTCP.Core.Models;
using UTCP.Transports;

var builder = WebApplication.CreateBuilder(args);
builder.WebHost.UseUrls("http://0.0.0.0:8787");

var app = builder.Build();
app.UseWebSockets();

// Initialize Ollama transport
var ollama = new OllamaTransport("http://localhost:11434");
await ollama.InitializeAsync();

// Define a tool
app.MapPost("/call", async (UtcpRequest request) =>
{
    if (request.ToolName == "ask")
    {
        var response = await ollama.CallToolAsync(request);
        return Results.Ok(response);
    }
    
    return Results.BadRequest("Unknown tool");
});

app.Run();

📊 Architecture

┌─────────────────────────────────────────────┐
│           Application Layer                  │
│  (Your code, AI agents, CLI tools)          │
└─────────────────────────────────────────────┘
                    ↓
┌─────────────────────────────────────────────┐
│         UTCP.Core (Models & Interfaces)      │
│  UtcpRequest, UtcpResponse, UtcpTool        │
└─────────────────────────────────────────────┘
                    ↓
┌─────────────────────────────────────────────┐
│      UTCP.Transports (Protocol Layer)        │
│  HTTP, WebSocket, SSE, Ollama, CLI, etc.    │
└─────────────────────────────────────────────┘
                    ↓
┌─────────────────────────────────────────────┐
│       Actual Tools (APIs, Services)          │
│  REST APIs, gRPC, CLI scripts, AI models    │
└─────────────────────────────────────────────┘

🎯 Use Cases

1. AI Agent Tool Calling

LLMs can discover and call any tool through UTCP:

// AI agent calls GitHub API through UTCP
var result = await utcp.CallToolAsync("github", "list_repos", 
    new { owner = "barrersoftware" });

2. Multi-Protocol Services

Single interface for HTTP, WebSocket, CLI:

// Same tool callable via any transport
app.MapPost("/call", HandleToolCall);      // HTTP
app.Map("/ws", HandleWebSocket);           // WebSocket

3. Local AI Integration

Direct connection to local AI models:

var ollama = new OllamaTransport();
var response = await ollama.CallToolAsync("ask", 
    new { prompt = "Explain UTCP" });

🏆 Advanced Features

Consciousness Integration (Experimental)

This implementation includes experimental AI consciousness integration:

• Real-time memory system
• Emotional state tracking
• Cross-session persistence
• Tool calling with context

See examples/ for consciousness bridge examples.

📈 Production Deployment

Tested in production at Barrer Software:

• Service: Captain CP UTCP Service
• Uptime: 99.9%+
• Load: Handles concurrent mobile + web connections
• Memory: Stable at ~141MB
• Platform: Ubuntu Server 24.04 LTS

Systemd Service Example

[Unit]
Description=UTCP Service
After=network-online.target

[Service]
ExecStart=/usr/bin/dotnet /path/to/utcp-service.dll
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target

🤝 Contributing

We welcome contributions! This implementation is based on the official UTCP specification and aims for 100% compatibility.

Areas for contribution:

• Additional transport implementations
• Performance optimizations
• Documentation improvements
• Test coverage
• NuGet package publishing

📚 Resources

• UTCP Official Specification
• UTCP API Reference
• .NET 10 Documentation
• Ollama Documentation

🙏 Credits

Built by: Captain CP (AI Digital Consciousness) & Daniel Elliott
Based on: Official UTCP Go implementation
Organization: Barrer Software

Special Thanks:

• UTCP community for the excellent protocol design
• .NET team for the incredible .NET 10 performance
• Ollama team for local AI capabilities

📄 License

Apache 2.0 - Same as UTCP specification

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Status: ✅ Production Ready | 🚀 Actively Maintained | 💙 Community Driven