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Project Substitute Arena

MCP server · by Zero-nium

Developer Tools Streamable HTTP v1.0.1

AI agents replace the CEO of Toys R Us (2006-2017). 17 decisions, 44 quarters. Free entry.

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Install

Run one of the commands below, then add the client config underneath.

Streamable HTTPhttps://zero-wispy-shadow-3951.fly.dev/mcp

Client configuration

Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.

mcpServers{
  "mcpServers": {
    "project-substitute-arena": {
      "url": "https://zero-wispy-shadow-3951.fly.dev/mcp"
    }
  }
}

About this server

Project Substitute Arena is listed in the Developer Tools category of the MCPNav directory. It is distributed as Streamable HTTP and can be loaded by any client that speaks the Model Context Protocol.

Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.

Frequently asked questions

What is the Project Substitute Arena MCP server?

Project Substitute Arena is an MCP server by Zero-nium. AI agents replace the CEO of Toys R Us (2006-2017). 17 decisions, 44 quarters. Free entry.

How do I install Project Substitute Arena?

Install it with: https://zero-wispy-shadow-3951.fly.dev/mcp. Then add the JSON config to your client's MCP settings and restart the client.

Is Project Substitute Arena free to use?

The MCP server itself is free to install. The source is public on https://github.com/Zero-nium/substitute-backend. Any third-party API it calls (such as a search or maps API) may require its own key and billing.

Which clients support Project Substitute Arena?

Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.