Valkey MCP Task Management Server is a Go-based backend that implements the Model Context Protocol (MCP) to enable AI agents to create, manage, and track plans and their tasks using Valkey as the persistence layer. It provides comprehensive plan and task CRUD operations, supports task ordering and prioritization, and tracks task statuses. Plans and tasks can include rich Markdown-formatted notes, which are sanitized for security and included in API responses. The server exposes MCP through multiple transports: Server-Sent Events (SSE) and Streamable HTTP, plus STDIO for direct process communication. By default, only one transport is enabled at a time. The MCP API includes functions for creating, updating, listing, and deleting plans and tasks, updating and retrieving notes, and reordering tasks. A health check endpoint is provided, and the system can be deployed via Docker containers with Valkey persistence. The architecture relies on Go, Valkey, Valkey-Glide v2, and the Model Context Protocol for AI-agent integration.