Tech Radar: Stateless MCP 2.0 & Kubernetes Gateway API Architecture
Tech Radar: Stateless MCP 2.0 & Kubernetes Gateway API Architecture Answer-First: Model Context Protocol (MCP 2.0 - Core Spec 2026-07-28) transitions tool execution to stateless JSON-RPC 2.0 over HTTP/SSE, eliminating sticky-session bottlenecks. Combined with Kubernetes Gateway API (agentgateway), this architecture horizontally scales thousands of MCP server pods, enforces SPIFFE mTLS authentication, and reduces P99 latency below 12ms. 1. Architectural Context & Failure Modes of Stateful MCP 1.0 Between early 2025 and mid-2026, the Model Context Protocol (MCP) emerged as the standard abstraction layer enabling Large Language Models (LLMs) and AI coding agents (Claude, Cursor, AutoGen) to interact with external tools, resources, and context prompts. ...