Core Viewpoint - The Model Context Protocol (MCP) is gaining traction as a standardized API for Large Language Models (LLMs) to interact with the world, similar to how USB-C standardizes connections for devices [2][5]. Group 1: MCP Overview - MCP serves as a standardized way for applications to provide context to LLMs, facilitating interaction with various data sources and tools [1]. - Major players like IBM and Google are developing their own versions of MCP, such as the Agent Communication Protocol (ACP) and Agent2Agent (A2A) [2]. Group 2: Implementation Challenges - There is a lack of mature engineering practices in MCP, with poor documentation and low-quality SDKs being common issues among major participants [3]. - The author criticizes the current HTTP transport setup, suggesting it should be replaced with WebSockets to improve efficiency and reduce complexity [3][29]. Group 3: Transport Protocols - MCP utilizes multiple transport protocols, including stdio and HTTP, with the latter being criticized for its complexity and potential security issues [8][10]. - The HTTP+SSE and "Streamable HTTP" modes introduce significant complexity, leading to potential security vulnerabilities and interoperability issues [21][24]. Group 4: Security and Complexity Issues - The flexibility of Streamable HTTP raises security concerns, including session management vulnerabilities and an expanded attack surface [24][26]. - The multiple ways to initiate sessions and respond to requests increase cognitive load for developers, complicating code maintenance and debugging [26]. Group 5: Recommendations for Improvement - The industry should focus on optimizing HTTP transport to align more closely with stdio, minimizing unnecessary complexity [28]. - WebSockets are proposed as a more efficient alternative for transport, allowing for better session management and reducing the need for complex state handling [29]. Group 6: Alternative Protocols - Other emerging protocols like ACP and A2A are seen as potentially unnecessary, as many of their functionalities can be achieved through MCP with minor adjustments [31][32].