Maplestory MCP Server

Official-style NEXON MapleStory MCP Server for Claude Desktop - Complete character info, union details, guild data, rankings, and game mechanics

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What is the Maplestory MCP server?

If you already use Maplestory, the maplestory mcp server is the piece that lets your assistant work with it directly. Official-style NEXON MapleStory MCP Server for Claude Desktop - Complete character info, union details, guild data, rankings, and game mechanics.

What the server does

NEXON 메이플스토리 오픈 API 데이터에 접근할 수 있는 종합적인 MCP(Model Context Protocol) 서버입니다. Claude Desktop 및 기타 MCP 호환 AI 어시스턴트를 통해 캐릭터 정보, 유니온 세부사항, 길드 데이터, 랭킹, 게임 메커니즘에 구조화된 접근을 제공합니다.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • get_character_basic_info — The get_character_basic_info tool exposed by this server
  • get_character_stats — The get_character_stats tool exposed by this server
  • get_union_info — The get_union_info tool exposed by this server

Installation

Installation goes through your MCP client rather than a global install: point it at maplestory-mcp-server on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

Credentials and setup notes

Configuration is passed through the environment: NEXON_API_KEY, YOUR_NEXON_API_KEY, YOUR_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Where it fits

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Maplestory's toolset — get_character_basic_info, get_character_stats, get_union_info — is a fair guide to whether it matches your workflow. It is maintained by ljy9303; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
get_character_basic_infoThe get_character_basic_info tool exposed by this server.
get_character_statsThe get_character_stats tool exposed by this server.
get_union_infoThe get_union_info tool exposed by this server.

How to install the Maplestory MCP server

{
  "mcpServers": {
    "maplestory-mcp-server": {
      "command": "npx",
      "args": ["-y", "maplestory-mcp-server"],
      "env": {
        "NEXON_API_KEY": "여기에_발급받은_API_키_입력"
      }
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

VariableDescriptionRequired
NEXON_API_KEYCredential the server authenticates with.Yes
YOUR_NEXON_API_KEYCredential the server authenticates with.Yes
YOUR_API_KEYCredential the server authenticates with.Yes

Example prompts to try

  • Use Maplestory to get character basic info.
  • Use Maplestory to get character stats.
  • Use Maplestory to get union info.

Frequently asked questions

It connects Maplestory to MCP-compatible AI assistants such as Claude and Cursor, exposing 3 tools (get_character_basic_info, get_character_stats, get_union_info) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Maplestory directly.