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Showing content from https://blog.marcnuri.com/model-context-protocol-mcp-introduction below:

Introduction to the Model Context Protocol (MCP): The Future of AI Integration

Introduction

The Model Context Protocol (MCP) is a groundbreaking open standard designed to simplify and enhance the way artificial intelligence (AI) applications, particularly those powered by Large Language Models (LLMs), interact with external data sources, tools, and systems.

Introduced by Anthropic in late 2024, MCP has rapidly evolved into a mature ecosystem with hundreds of community-contributed servers and widespread adoption across major AI platforms, development tools, and on-device agents.

What is MCP?

MCP is a protocol that acts as a bridge between LLMs and external systems. It provides a standardized way for applications to provide context to LLMs. The protocol enables a seamless exchange of information between the AI model and the external world. Its main goal is to help models provide more accurate and relevant responses and enable them to interact with the world in a more human-like manner. As AI agents evolve and become mainstream, MCP has become the de facto standard for enabling them to understand and respond to the world around them.

Recent updates to the protocol have introduced better support for streamed server responses, richer metadata structures, and improved client registration mechanisms.

Why is MCP Important?

MCP provides a structured approach to managing the context of AI applications by addressing challenges such as:

Seamless Integration: It eliminates the need for developers to write custom code to integrate AI models with external systems by providing a standard approach.
Scalability: It allows developers to build modular AI applications that can easily scale and adapt to new use cases.
Ease of Maintenance: Developers can update individual LLM context layers without retraining the model or rewriting the application logic.
Security and Control: MCP enforces best practices for handling sensitive data and ensures that AI models interact with external systems securely.
Interoperability: Provides the flexibility to switch between different AI models and external systems without changing the underlying infrastructure.
Reusability: Developers can leverage a vast ecosystem of pre-built MCP servers covering everything from cloud services to development tools.
Enterprise Adoption: Major companies have adopted MCP for production AI workflows, validating its stability and enterprise readiness.

How Does MCP Work?

MCP is designed with a modular and scalable architecture that ensures flexibility, extensibility, and interoperability across different environments and systems. It is based on a client-server architecture, where a host is an AI agent or application that interacts with MCP servers.

MCP Protocol (http-stream) Model Context Protocol Architecture

The previous diagram illustrates the basic architecture of an MCP-enabled application which is composed of the following components:

Host Application: The AI agent or LLM application that interacts with the MCP servers via MCP clients. Goose, Claude, and custom AI agents are examples of host applications.
MCP Client: The client-side implementation of the MCP protocol that communicates with the MCP servers. Each client establishes a dedicated connection with a single MCP server within the host application.
MCP Server: The server-side implementation of the MCP protocol that provides context, tools, and prompts to the AI agent.
MCP Protocol: The communication protocol used by MCP clients and servers to exchange context information. Can be one of the following:
- stdio: Uses standard input/output for communication. Suitable for local servers.
- streamable http: Uses HTTP POST and GET requests to stream multiple server messages. Suitable for remote servers.
- sse: (Deprecated) Uses Server-Sent Events for communication. Suitable for remote servers.
Local Data Sources: Local data sources such as files, databases, and APIs that provide context to the AI agent.
Remote Services: External services that provide context to the AI agent, for example via web APIs.

What kinds of context can MCP servers provide?

MCP servers can provide the following types of context to AI agents:

Resources: Any kind of data that can be read by clients and used as context for LLM interactions.
Tools: Allow AI agents to execute actions and perform tasks. This is a very powerful (and dangerous) feature that essentially allows AI agents to interact with the world.
Prompts: Reusable prompt templates that help users accomplish specific tasks. They are like shortcuts to common interactions that the AI agent can perform.

Conclusion

The Model Context Protocol (MCP) has evolved from an experimental standard to a mature ecosystem that is transforming how AI applications interact with the world. With widespread adoption across development tools, cloud platforms, and enterprise applications, MCP has proven its value in building modular, scalable, and context-aware AI systems.

By providing a structured approach to managing context, MCP enables developers to build more modular, scalable, and context-aware AI applications. As AI agents become more sophisticated and integrated into our daily lives, MCP will play a crucial role in enabling them to understand and respond to the world around them.

The growing ecosystem of MCP servers, from specialized tools like Kubernetes and GitHub integrations to comprehensive cloud service connectors, demonstrates the protocol's versatility and the community's commitment to building interoperable AI tools.

Continue reading the Goose introductory post to learn how to use the Goose AI agent to interact with MCP servers.

References