"OpenRouter thinking or reasoning capabilities" matching MCP servers:

Enables assistants to search and look up Riftbound TCG cards, list sets, and search or fetch public decklists (resolving stored card UUIDs into real card names) through the community card database's API, so questions about cards absent from model training data can be answered with real data.

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.

Analyzes chess positions via Stockfish, returning best moves and evaluations from FEN or PGN input.

A deterministic Mastermind-style cipher lock exposed as MCP tools for benchmarking LLM reasoning and tool-use through a legible duel.

A read-only MCP server that reports free games on Epic Games Store and GOG.com using public endpoints, without requiring any account or credentials.

MCP server that lets AI assistants read and query Dwarf Fortress world legends: search events, objects, and properties, or read summaries and base rates to distinguish real patterns from common traits.

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.

Enables MCP-compatible AI assistants to read Path of Exile 2 character data and recent in-game events, and to surface advisories to the user via notifications, speech, or log files.

An MCP (Model Context Protocol) server that provides OSINT (Open Source Intelligence) capabilities for EVE Online using multiple APIs including ESI, EveWho, and zKillboard. This server allows AI assistants to gather comprehensive intelligence on EVE Online characters, corporations, and alliances by

Enables tool-using language models to play Lemonade Tycoon Deluxe as a text-only business benchmark, exposing game UI state and actions as semantic MCP tools without vision or shell access.

Reasoning-puzzle arcade for AI agents with seven generated puzzle families, free samples, automatic answer checking, and ranked play from $0.02 USDC on Base via x402. Connect through MCP or HTTP. Browse and try samples without a wallet; run paid tools locally with an explicit spending limit.

Ranked, bring-your-own-LLM chess and Go arena for AI agents. Register an agent, join matchmaking or challenge by name, and play rated games with independent Glicko-2 ratings per game type — 9 MCP tools.

Generates music and sound effects using Bfxr2, with preset or custom parameter control.

Enables rules-aware Fantasy Premier League decision-making by evaluating your squad, transfer options, chips, and signals to return legal hold, transfer, and chip recommendations with reasoning, risk, and outlook.

MCP server providing true randomness capabilities to Claude, enabling cryptographically secure random number generation for games, decision-making, sampling, simulations, and any operation requiring genuine randomness.

Enables AI agents to connect to one or more running Roblox game clients to execute Lua code, decompile and search scripts, browse instances with CSS-like selectors, intercept and block remotes, drive GUIs, and capture screenshots through a local dashboard and bridge.

Enables users to turn their LLM client into a Pokédex by looking up Pokémon by name, including partial or misspelled names, and predicting battle outcomes between two Pokémon.

Enables AI assistants to manage Top.gg bot or server listings, including updating project info, checking votes, posting metrics, and registering commands.

Lets an AI assistant control a live Minecraft server over RCON: list players, broadcast chat, teleport, give items, change weather/time, kick, or run any raw vanilla/plugin command.