PuzzleBox

Puzzlebox is an MCP server implementation that hosts finite state machines (puzzles) as dynamic resources that clients can subscribe to and be updated when their state changes. It enables coordination between multiple agents working on long-horizon tasks by providing a shared state machine that can transition between discrete states through valid actions, with optional guards that can prevent transitions. The server exposes tools for adding puzzles, getting snapshots of puzzle states, performing actions on puzzles, and supports resource subscriptions so clients receive real-time updates when puzzle states change, making it particularly valuable for orchestrating multi-agent workflows where different teams need to operate within distinct project phases.