"UML diagram generation tools and software like Mermaid or Visio" matching MCP servers:

An MCP server that lets Claude control a Minecraft bot with 40+ actions including movement, combat, crafting, and inventory management. Built on Mineflayer, it supports Microsoft authentication, pathfinding, and auto-reconnect.

A source-preserving MCP server for coding agents working on Hearts of Iron IV mods, combining focus tree, GUI, and map tools with transaction safety.

Diablo II Resurrected modding toolkit — character builder, mod build/deploy pipeline, save inspector, CASC reader, and MCP server for Claude/Codex/AI integration. Linux/Steam Deck.

MCP server for searching Flesh and Blood TCG cards, retrieving print variations, and browsing product catalogs via the CardVault API.

Enables exploring Steam store reviews and community discussion threads with server-side filtering, temporal analysis, and metadata context for understanding player sentiment and feedback beyond store page noise.

An MCP-based trivia game server where AI creates rounds with two true statements and one false 'twist' about various topics, letting players guess which statement is false.

Enables MCP agents to play chess locally, supporting join, state, legal moves, and move execution with per-session color ownership.

Enables solving crossword puzzles by loading grid and clue files, registering candidate words, checking consistency, and rendering final solutions. Supports Japanese crosswords with automated solving capabilities through natural language interaction.

A Minecraft MCP Server powered by Mineflayer API. It allows to control a Minecraft character in real-time, allowing AI assistants to build structures, explore the world, and interact with the game environment through natural language instruction

Enables agents to generate uniquely-solvable Sudoku puzzles, validate partial or complete grids, and solve puzzles using SMT solving with Z3, all through stateless MCP tools.

Enables rolling of standard RPG dice (d4, d6, d8, d10, d12, d20, d100, etc.) using dice notation like '3d6' or 'd20', and returns detailed results including individual rolls and totals.

An MCP server that provides tools for rolling dice using standard notation, flipping coins, and selecting random items from lists. It supports advanced tabletop gaming features such as character stat generation and keep-highest/lowest mechanics.

Provide seamless access to Magic: The Gathering Chinese card data from 大学院废墟(sbwsz.com) through a set of powerful query tools. Search cards by complex criteria, retrieve card sets, and get detailed card information to enhance your applications or workflows.

Enables playing RPGs with LLMs through tools for dice rolling (e.g., '1d6'), success checks with criticals, and random event generation.

A Model Context Protocol server for querying and analyzing double-color ball (双色球) lottery historical data from 2013 to present, offering tools for data retrieval, statistical analysis, and reference number generation.

Enables MCP clients like Claude Desktop to run dice rolling and coin flipping tools with true randomness, and to fetch basic server metadata as a read-only resource.

Enables chess analysis and move generation using the Stockfish engine via MCP tools, allowing clients to evaluate positions, get best moves, apply moves, and visualize boards.

A community-maintained MCP server for bounded management of RomM through its authenticated API, providing typed read/write tools for library tasks like ROM discovery, metadata updates, and collection management.

MCP server for refereeing tabletop RPG sessions by analyzing transcripts against a configurable charter, providing deterministic findings on rule violations like unanswered questions or unacknowledged dice rolls.

MCP server exposing 30 tools for League of Legends player analysis, match review, and training-plan generation.