STS2 MCP Server

A mod for Slay the Spire 2 that lets AI agents play the game. Exposes game state and actions via a localhost REST API, with an optional MCP server for Claude Desktop / Claude Code integration.

Local serverstdio

What is the STS2 MCP Server?

STS2 is an MCP project maintained in the gennadiyev/sts2mcp repository. The maintainer describes its purpose as “A mod for Slay the Spire 2 that lets AI agents play the game. Exposes game state and actions via a localhost REST API, with…”. Read the project documentation for the complete scope.

Local setup

The project provides a local client configuration using uv. Follow the repository’s build and installation steps before copying it, and replace example paths with the paths on your own computer.

Source

Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.

How to install the STS2 MCP Server

{
  "mcpServers": {
    "sts2": {
      "command": "uv",
      "args": [
        "run",
        "--directory",
        "/path/to/STS2_MCP/mcp",
        "python",
        "server.py"
      ]
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.