Digital Event Horizon
The Model Context Protocol (MCP) is rapidly evolving, with significant updates to its transport options. This article explores the transition from Server-Sent Events (SSE) to Streamable HTTP, examining the benefits and limitations of the new protocol and its implications for building a useful MCP server.
MCP has evolved rapidly with updates and changes to its transport options. The protocol shifted from SSE to Streamable HTTP, replacing the deprecated SSE. The transition introduced challenges for supporting different features and revisions in Client applications. Developers chose Streamable HTTP for production deployment due to its flexibility and options. The article will explore design choices made by MCP Server developers and examine the benefits and limitations of Streamable HTTP.
The Model Context Protocol (MCP) has been rapidly evolving over the past few months, with significant updates and changes to its transport options. In this article, we will delve into the context of MCP's evolution, focusing on the transition from Server-Sent Events (SSE) to Streamable HTTP.
MCP is a protocol designed to connect AI Assistants to the outside world, providing access to the Hugging Face Hub through a simple URL. The protocol has been gaining popularity, with thousands of AI applications available on Spaces. To cater to this growing community, the developers of MCP Server had to make strategic decisions regarding its transport options.
In November 2024, MCP introduced Streamable HTTP as a new transport option. This move marked a significant shift from the traditional SSE transport, which was deprecated in March 2025. The introduction of Streamable HTTP provided more flexibility and options for deployment, making it an attractive choice for production environments.
The transition from SSE to Streamable HTTP came with its own set of challenges. With rapid changes to MCP's protocol revisions, supporting different features and revisions in Client applications became a complex task. Despite these challenges, the developers of MCP Server chose to go with Streamable HTTP for their production deployment.
In this article, we will explore the design choices made by the MCP Server developers, focusing on the trade-offs involved in choosing between different transport options. We will also examine the benefits and limitations of Streamable HTTP, as well as its implications for building a useful MCP server.
The journey to build the Hugging Face Official MCP Server has been marked by significant progress and learning experiences. In this article, we aim to share our experience developing the MCP Server, highlighting the key design choices and trade-offs involved in setting up a remote MCP Server.
Related Information:
https://www.digitaleventhorizon.com/articles/The-Evolution-of-Model-Context-Protocol-A-Journey-to-Streamable-HTTP-deh.shtml
https://huggingface.co/blog/building-hf-mcp
https://huggingface.co/learn/mcp-course/en/unit3_1/creating-the-mcp-server
https://github.com/huggingface/mcp-course/blob/main/units/en/unit3/build-mcp-server-solution-walkthrough.mdx
Published: Thu Jul 10 02:00:47 2025 by llama3.2 3B Q4_K_M
