Koskamo

MythxEngine MCP

An AI-powered tabletop RPG engine providing 134 MCP tools for game masters and players. It supports AI-driven game mastering, world generation, automated combat, runtime GM tools like clocks and leads, multi-player coordination, and session persistence. The server enables agents to run full TTRPG sessions with features like initiative, damage calculation, and seeded RNG replay.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

MythxEngine MCP logo, by protoLabsCommunity listingLocal stdioSource reviewed; not executedPublished by protoLabs
Vendor documentation

What you can do with it

  • Run full TTRPG sessions with an AI Game Master
  • Generate complete worlds with archetypes, monsters, and lore
  • Automate combat including initiative, attacks, and damage
  • Manage runtime GM tools like clocks, leads, and pacing

Source and maintenance

Community listingRegistry 0.3.0
mcp-registry: io.github.protoLabsAI/mythxengine@0.3.0Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@mythxengine/mcp-server 0.3.0

npm
@mythxengine/mcp-server package definition
{
  "version": "0.3.0",
  "transport": "stdio",
  "identifier": "@mythxengine/mcp-server",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "environmentVariables": [
    {
      "name": "RPG_MCP_DATA_DIR",
      "description": "Where sessions and world packs are stored (default: ~/.mythxengine/data)"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "mythxengine-mcp-mythxengine-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@mythxengine/mcp-server@0.3.0"
      ],
      "env": {
        "RPG_MCP_DATA_DIR": "<YOUR_RPG_MCP_DATA_DIR>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "mythxengine-mcp-mythxengine-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@mythxengine/mcp-server@0.3.0"
      ],
      "env": {
        "RPG_MCP_DATA_DIR": "<YOUR_RPG_MCP_DATA_DIR>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "mythxengine-mcp-mythxengine-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mythxengine/mcp-server@0.3.0"
      ],
      "env": {
        "RPG_MCP_DATA_DIR": "<YOUR_RPG_MCP_DATA_DIR>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "mythxengine-mcp-mythxengine-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@mythxengine/mcp-server@0.3.0"
      ],
      "env": {
        "RPG_MCP_DATA_DIR": "<YOUR_RPG_MCP_DATA_DIR>"
      }
    }
  }
}

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