MCP SDK
Components for building MCP servers and clients that enhance LLM reasoning with custom data, code, and context.
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Connect LLMs to Your Applications
The Model Context Protocol (MCP) standardizes how large language models interact with external systems, making it possible to expose custom data, functionality, and predefined instructions in a way models can use programmatically. MCP gives you a structured way to connect LLMs to your organization's data, tools, and workflows, making their output more relevant to your specific needs.
MCP SDK is a development library that streamlines implementation of MCP servers and clients. Our components use an intuitive event-driven API that enables LLMs to retrieve relevant data, trigger custom operations, follow reusable instructions, and more. Whether you're building AI agents or integrating LLMs into backend systems, MCP SDK acts as the connective layer between language models and your application logic. MCP SDK supports all major protocol features like tools, sampling, prompts, and resources.
Bi-Directional Communication
MCP SDK enables seamless, two-way communication between your systems and LLMs. MCP servers built with MCP SDK can expose custom functionality, resources, and prompts that LLMs can call in real time. Clients built with MCP SDK act as the bridge between LLMs and those server-side capabilities by initiating requests and retrieving data, functionality, and instructions that reflect your organization’s unique context.
Easy Setup
MCP SDK ensures that interfacing with LLMs is as easy as possible. With just a few basic configuration settings, MCP hosts can launch your MCP server quietly in the background to facilitate communication. Whether you want to communicate over standard input and output or HTTP, MCP SDK minimizes the overhead required to integrate with all standard MCP hosts.
MCP Tool Support
Enable your LLM client to execute custom code by defining Tools available within query contexts.
Flexible Resource Integration
Provide your LLM with data through user-defined data Resources. Serve data from a file, database, cloud repository, and more.
Pre-Defined Prompts
Template common LLM prompts for reusability, with support for dynamic arguments and resource contexts.
Sample LLM Logic in Code
Bi-directional integration with your LLM client means you can query LLM reasoning within your Tools and custom code.
Uniform & Extensible Design
Very easy to use, with a uniform, intuitive, and extensible design. Common component interfaces across platforms and technologies.
Fully Integrated Components
Native software components for any supported development technology - with no dependencies on external libraries.
Red Carpet Vol. 3 2025 Now Available
New Tools for AI Integration, NFC Communication, PDF Creation and Editing, Cloud Spreadsheet Integration, SFTP Server Hosting, and More
The latest Red Carpet Subscription update includes the new MCP SDK toolkit for AI Integration with LLMs, IPWorks NFC for Near Field Communication on Android and iOS, and Cloud Sheets for integrating spreadsheet management into your apps. Additionally, Secure PDF has been updated with support for ZUGFeRD invoices, editing PDFs, and automated form filling and PKI Agent for in-browser signing using system certificates has been fully released.
Download MCP SDK or read the update highlights.
Product Features
MCP SDK includes an MCP Server component for building customized MCP servers that facilitate bi-directional communication with LLM clients.
- Full support for all major MCP features, including resources, prompts, sampling, and tools.
- Simplified handling of MCP server events through a simple, intuitive component API.
- Flexible server implementation allows for custom logic to determine what resources your LLM can access.
- Supports standard input and output channels as well as HTTP.
- Enable LLM access to your applications' unique data and logic.
- Make custom application logic callable by LLMs.
- Works seamlessly with existing MCP hosts like Claude Desktop, Cursor, VS Code, and more.
- A complete unified framework with a common, easy-to-learn object model and simplified interfaces that enable you to do more.
- Components are thread-safe on critical members.
- Fast, robust, reliable components that consume minimal resources.
- Native development components for all supported platforms and technologies.
- Rigorously tested, rock solid libraries that have undergone hundreds of thousands of hours of testing both internally by our QA team and externally through customer installations.
- Detailed reference documentation, sample applications, fully-indexed help files, and an extensive online knowledge base.
- Backed by multi-tier professional support, including free email support and enterprise-level paid support.
Supported Platforms
.NET
.NET Framework & Cross-platform Components
Based on a 100% C# codebase, with no dependencies on native code. The edition of choice for all .NET applications.
Cross-platform support for Windows, Linux, macOS, and anywhere .NET is supported. Due to OS limitations, not all features are available on all operating systems. Native libraries are also available for individual platforms.
- Fully-managed .NET components written in C#.
- Support for .NET 9, .NET 8, .NET 6, .NET 5, .NET Core 3.1, and earlier.
- Support for .NET Framework 2.0 - 4.8.
- Works with Xamarin and MAUI via .NET 6.
- .NET Standard 2.0 and 2.1 support.
- Fully asynchronous API available.
- Cross-platform support.
- Support for Windows IoT.
- Comprehensive integrated product documentation.
- Seamless integration with Visual Studio.
- Extensive sample applications written in C#.
Java
Pure Java Classes (Java/J2EE)
Pure Java Classes exposed through an intuitive API for portability across all major platforms.
- Pure Java Classes.
- Includes an extensive library of samples written in pure Java.
- J2EE version is optimized for server-side development.
- Seamless integration with popular development environments including JBuilder, Eclipse, and IntelliJ.
- Support for JDK version 1.7 and up.
C++
C++ Class Libraries (Windows / Linux / macOS)
C++ classes packaged in 32-bit & 64-bit Windows DLLs, and C++ libraries that can be compiled against many Unix flavors, including but not limited to Linux, Solaris, macOS, AIX, FreeBSD, etc. The edition of choice for C++ programming on any platform or C++ development technology.
- Windows 32-bit & 64-bit C++ class libraries (Windows DLLs).
- C++ libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc.).
- Dynamic library (dylib) for macOS development using Swift & Objective-C on Intel and Apple Silicon (ARM64).
- C++ ARM Support.
- Extensive library of sample applications and comprehensive documentation.
- Seamless integration with popular development environments including Microsoft Visual C++.
- Obfuscated source code available with the Red Carpet Subscription.
macOS
XCFramework for macOS and iOS development
Modern XCFrameworks for building high performance macOS and iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Simplified support for Objective-C projects
- Extensive demo applications and comprehensive documentation
Swift
Native Swift XCFramework for macOS and iOS development
Native Swift XCFrameworks for building high performance macOS and iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Extensive demo applications and comprehensive documentation
Delphi
Delphi VCL Components
Native Delphi VCL components with no external dependencies. It features the same trustworthy components that come with other editions, available as native Delphi VCLs for real Delphi performance.
- Native Delphi VCL and FMX components.
- Extensive Delphi sample applications.
- Comprehensive integrated product documentation.
- Support for Lazarus IDE and Free Pascal.
- Support for all Delphi versions between Delphi 6 and RAD Studio 13.
- Support for Windows, Linux and macOS.
C++ Builder
C++ Builder VCL's
Native C++ Builder components, written in C++ and compiled with the C++ Builder compiler for blazing performance. The natural choice for C++ Builder programming.
- Native C++ Builder components.
- Extensive C++ Builder sample applications.
- Comprehensive integrated product documentation.
- x86 and x64 platform support.
- Support for all C++ Builder versions between C++ Builder 2009 and RAD Studio 13.
PHP
Cross-platform PHP Component Libraries
Cross-platform PHP component libraries / extensions for development on Windows, Unix, Linux, macOS, etc.
- 32-bit & 64-bit PHP libraries (Windows DLLs).
- PHP libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc..).
- Support for PHP versions 5.2 through 8.3.
- Extensive library of sample applications and comprehensive documentation.
- Obfuscated source code available with the Red Carpet Subscription.
Python
Python modules (Windows / Linux / macOS)
Python modules for Windows, Linux, and macOS available for use in Python 3.
- Python modules for Windows, Linux, and macOS.
- Support for Python 3.
- Comprehensive documentation.
- Easy installation using PIP.
- Extensive library of sample applications.
Android
Pure Java Classes, Optimized for Android
Highly optimized, pure Java Classes for integrating blazing connectivity into Android applications.
- Pure Java Classes optimized for Android.
- Includes an extensive library of sample applications written in pure Java.
- Seamless integration with popular development environments including Android Studio.
Kotlin
Pure Java Classes for Kotlin
Pure Java Classes that can be seamlessly used in Kotlin projects. Full interoperability with Kotlin's modern syntax while maintaining the same trusted Java foundation.
- Pure Java Classes with full Kotlin interoperability.
- Ideal for Kotlin desktop and JVM applications.
- Perfect for Kotlin Android development.
- Seamless integration with popular development environments including IntelliJ IDEA and Android Studio.
iOS
XCFramework for iOS development
Modern XCFrameworks for building high performance iOS applications with blazing connectivity capabilities.
- Support for native Swift development (including Swift 5)
- XCFramework packaging for macOS, iOS, iOS simulator, and Catalyst projects
- Full support for Intel and Apple Silicon (ARM64)
- Easy integration in XCode 13+
- Simplified support for Objective-C projects
- Extensive sample applications and comprehensive documentation
Qt
Qt Class Libraries (Windows / Linux / macOS)
High-performance Qt classes packaged in 32-bit & 64-bit Windows DLLs; and C++ libraries that can be compiled against Linux, macOS, FreeBSD, and more. The edition of choice for Qt development on any platform.
- 32-bit & 64-bit C++ class libraries (Windows DLLs).
- C++ Libraries for Unix (Linux, macOS, FreeBSD, etc.).
- Support for Qt 4.8, Qt 5, and Qt 6.
- Seamless integration with Qt Creator.
- Obfuscated source code available with the Red Carpet Subscription.
Linux
C++ Class Libraries (Unix / Linux)
C/C++ libraries that can be compiled against any Linux or Unix OS. The edition of choice for C++ programming on any platform or C++ development technology.
- C/C++ Libraries for Unix (Linux, Solaris, FreeBSD, macOS, etc..).
- Seamless integration with popular development environments including Microsoft Visual C++.
- Compilable source code for compilation on various Unix platforms.
- Framework for macOS & iPhone development using Swift & Objective-C (Cocoa).
- Extensive library of sample applications and comprehensive documentation.
- Obfuscated source code available with the Red Carpet Subscription.
MCPClient
MCPServer
Included Samples
The following sample projects are installed with the product. Please download the trial to get started.
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