stateless-mcp

# Stateless MCP A **stateless**, **multi-worker compatible** JSON-RPC 2.0 server with streaming support for MCP (Model Context Protocol). This library provides a drop-in replacement for FastMCP with true stateless architecture. ## Key Features - **Stateless Architecture**: No session state, works with multiple workers - **JSON-RPC 2.0**: Full compliance with JSON-RPC 2.0 specification - **In-Band Streaming**: Streaming responses over HTTP without external infrastructure - **Multi-Worker Safe**: Deploy with multiple Uvicorn workers - **Simple API**: Decorator-based tool registration - **No External Dependencies**: No Redis, no message queues - **Autogen Compatible**: Works seamlessly with Autogen agents ## Version 2.0 Features (New!) Version 2.0 adds production-ready observability, security, and operational features: ### Observability & Monitoring - **Structured Logging**: JSON and console logging with request ID tracking and sensitive data masking - **Prometheus Metrics**: Request counters, duration histograms, streaming metrics, and active request gauges - **Enhanced Health Checks**: Kubernetes-compatible liveness, readiness, and startup probes ### Security - **API Key Authentication**: Header-based authentication with multi-key support - **Rate Limiting**: Sliding window rate limiter with per-client tracking - **Permission System**: Role-based and permission-based access control ### Operational - **Request Tracing**: Automatic request ID generation and tracking across logs - **Metrics Export**: `/metrics` endpoint for Prometheus scraping - **Tool Introspection**: Enhanced `/tools` and `/tools/{name}` endpoints for discovery - **Better Error Handling**: Contextual error messages with proper JSON-RPC error codes All v2 features are **opt-in** and **backward compatible** with v1. See the [Version 2.0 Documentation](#version-20-documentation) section below for detailed usage. ## Why Stateless MCP? FastMCP has fundam…