20 0 MCP

What 20-0 MCP MCP server does

The 20-0 MCP MCP server gives MCP-compatible AI clients access to the public information surface for 20-0, a browser game about building an all-time NFL roster and attempting a 20-0 season. The game uses historical team-and-decade combinations to define player pools. Players draft twelve positions, then the site simulates 17 regular-season games, three playoff rounds, and a Super Bowl.

The server is intended for questions about the site's available modes, scenarios, and official destinations rather than for controlling a game session. It can help an agent explain free play, daily mode, leaderboards, and other published scenarios, or provide the official website and support address.

How it works

The server communicates with an MCP client over standard input and output. Its responses are read-only text or Markdown. No account, API key, or quota is required according to the project documentation, and the documented cold-start time is approximately 50 milliseconds.

The underlying game remains browser-based. Drafting, roster completion, and season simulation happen on the 20-0 site, while this MCP server supplies structured reference information about the site's modes and links. Daily mode uses a shared sequence for comparing scores, and the game supports shareable roster URLs; these are characteristics of 20-0 rather than interactive operations exposed by the listed MCP tools.

Setup and configuration

Installation can be handled through Smithery or from the source repository. Smithery provides a client-specific command, with documented examples for Claude Desktop, Cursor, Windsurf, and Continue. Source installation requires Node.js 18 or newer, pnpm, cloning the repository, and running pnpm install.

For a local client configuration, register a server entry whose command is node and whose argument points to the absolute path of src/index.mjs. The server starts over stdio with pnpm start, and the MCP Inspector can launch it for debugging. No environment variables or additional credentials are documented.

Tools and capabilities

The 20-0 MCP MCP server exposes two tools:

• list_scenarios takes no parameters and returns the canonical game modes and scenarios published by 20-0. The documented examples include free play, daily mode, and leaderboards.
• get_official_links takes no parameters and returns the canonical official URLs, including the website and support information when available.

The package also documents three read-only resources: site://20-0/scenarios for modes and roster constraints, site://20-0/faq for a short public FAQ, and site://20-0/links for canonical URLs. Two prompts are listed for supported clients: one for summarizing 20-0 and another for planning a play-through.

Limitations and notes

The listed tools do not draft players, submit scores, run simulations, read leaderboards, or mutate a roster. They expose descriptive information and links. A user who wants to play must open the 20-0 website. The server also does not require configuration for game data, and the documentation does not identify environment variables or an external API integration.

The project is licensed under MIT. Its stated transport is stdio, so the MCP client must support local process-based server connections. The game itself is free and does not require an account, but those properties apply to the website and should not be interpreted as additional server tools.