What does the server return?
It returns a JSON object with a `result` field containing the chosen hand (e.g., `"グー"`) and a `metadata` object with the same `choice`.
Janken MCP Server.js
@Takashi-Matsumura
Basic information
About Janken MCP Server.js
No overview available yet
Janken MCP Server.js config
No standard config provided
This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.
RepositoryJanken MCP Server.js tools
Tool list not available yet
This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.
We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.
Overview
What is janken-mcp-server.js?
janken-mcp-server.js is a simple HTTP server that provides a "janken" (rock-paper-scissors) game using the Model Context Protocol (MCP). It returns a random choice of グー, チョキ, or パー in response to MCP-formatted requests.
How to use janken-mcp-server.js?
Clone the repository, navigate to its directory, and start the server with node janken-mcp-server.js. It listens on http://localhost:3000 by default. Send a POST request with a JSON body containing {"query": "じゃんけん"} to receive a random hand.
Key features of janken-mcp-server.js
- Implements the MCP request/response protocol
- Randomly selects グー, チョキ, or パー
- CORS‑enabled for cross‑origin requests
- Lightweight and simple to run
Use cases of janken-mcp-server.js
- Demonstrating a basic MCP server implementation
- Adding a random rock‑paper‑scissors tool to an MCP‑compatible client
- Testing or prototyping MCP protocol interactions
Frequently asked questions
How do I send a request to the server?
Send a POST request to `http://localhost:3000` with `Content-Type: application/json` and a body like `{"query": "じゃんけん"}`.
What runtime does the server require?
The server runs on Node.js and is started with the command `node janken-mcp-server.js`.
Does janken-mcp-server.js support authentication or transport security?
The README does not mention authentication, TLS, or any transport‑level security.
What are the server's dependencies?
The README lists no additional dependencies beyond Node.js itself.
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