27-0 MCP Server

27-0 NRL Game - Build the Perfect XIII, Go Undefeated

A Model Context Protocol server that exposes the canonical 27-0 knowledge surface — game rules, roster constraints, and entry points, FAQ, official links — to MCP-compatible AI clients such as Claude Desktop, Cursor, Windsurf, and Continue. Read-only, no API keys, no quota, ~50 ms cold start.

Official website: https://27-0game.com

🎮 About 27-0

27-0 is a free browser game for NRL fans who want to build an all-time rugby league XIII and see whether it can survive a perfect season. The site turns an ordinary greatest-player debate into a constrained draft: each round spins an NRL club and era, then the player chooses one eligible legend for the open position. After thirteen picks, the lineup is run through a seeded 27-round season simulation. The goal is an undefeated 27-0 record and the highest available grade, not a prediction of a real NRL result.

Key Features

• Fixed 13-player lineup — The roster follows the NRL jersey structure: fullback, two wings, two centres, five-eighth, halfback, two props, hooker, two second-rowers, and lock. A pick must fit the position currently open, so famous names alone cannot solve the draft.
• Club-and-era spins — Every selection starts from a historical club and era pool. Players choose from the legends eligible for that spin instead of searching an unrestricted database.
• 27-round simulation — A completed XIII is evaluated across 27 rounds, with regular-season and finals stages leading to a grand final. The simulation is deterministic for a given seed and roster, which makes shared runs reproducible.
• Three draft experiences — Classic keeps player stats visible for number-based decisions. Daily uses the same thirteen spins for everyone, allows one attempt, and resets at midnight AEST. Footy IQ hides the stats so the draft relies on memory and rugby knowledge.
• Leaderboards and share codes — Players can submit a result to the leaderboard and share a compact code that recreates the run. Leaderboard entries are user-submitted game results, not certified competitive records. The public pages include the play screen, daily challenge, leaderboard, and share routes.
• Free and independent — The game runs in a browser without an account requirement for play. It is an independent fan project and is not affiliated with the NRL or any club. Player names, statistics, and ratings are site-curated game data used for commentary and parody, not official NRL records.

Use Cases

NRL fans can use Classic to compare the game's displayed player profiles, use Footy IQ to test historical knowledge, or return to Daily for a shared challenge. A group can play the same daily seed, post the resulting record, and open a share link to inspect the lineup and round-by-round story. The fixed positions create meaningful trade-offs between backs, forwards, spine roles, and the strength of each club-era pool.

Who Is It For

27-0 is for rugby league supporters who enjoy all-time debates, roster builders, daily games, and short competitive sessions. It is designed to be completed in a few minutes on desktop or mobile. The simulation is an entertainment mechanic: it should not be read as an official ranking of players, clubs, or likely real-world match outcomes.

Tools

get_game_rules

Return the verified game rules, roster constraints, and public entry points the site exposes. (27-0)

Input: no parameters. Returns: text/markdown.

get_official_links

Return the canonical list of official links for 27-0 (website, support, docs when available).

Input: no parameters. Returns: text/markdown.

Resources

• site://27-0/rules — Verified game rules, roster-building constraints, and public entry points.
• site://27-0/faq — Short FAQ generated from public site metadata.
• site://27-0/links — Canonical URLs to share with users.

Prompts

tell_me_about_27_0

Summarize what the site is, who it's for, and how it works. — 27-0

plan_a_run_27_0

Plan a single play-through using verified rules and entry points. — 27-0

Installation

Install via Smithery

npx -y @smithery/cli install 27-0-mcp --client claude

(Replace claude with cursor, windsurf, or continue for those clients.)

Install from source

git clone https://github.com/Rocniubi/27-0-mcp.git
cd 27-0-mcp
pnpm install

Then add to your MCP client config (claude_desktop_config.json for Claude Desktop, mcp.json for Cursor / Windsurf / Continue):

{
  "mcpServers": {
    "27-0-mcp": {
      "command": "node",
      "args": [
        "/absolute/path/to/27-0-mcp/src/index.mjs"
      ]
    }
  }
}

Debug with MCP Inspector

npx @modelcontextprotocol/inspector node src/index.mjs

Official Links

• Website: https://27-0game.com
• Support: hello@27-0game.com

Development

pnpm install
pnpm start                 # run the server over stdio

License

MIT