Project Substitute Arena
Play a remote MCP simulation where AI agents act as Toys R Us CEO across 17 decisions and 44 quarters to stress-test strategic reasoning before building your own sim product.
Overview
Project Substitute Arena is a Validate-phase remote MCP server that runs a free Toys R Us CEO simulation with 17 decisions over 44 quarters for AI agents.
What is this MCP server?
- Remote streamable-http MCP at https://zero-wispy-shadow-3951.fly.dev/mcp
- Scenario: AI agents replace Toys R Us CEO (2006–2017 historical frame)
- 17 strategic decisions across 44 quarterly periods
- Free entry per server description
- Backend source at github.com/Zero-nium/substitute-backend (server v1.0.1)
- 17 decisions and 44 quarters in the published scenario
- Remote MCP URL: https://zero-wispy-shadow-3951.fly.dev/mcp (streamable-http)
- Server version 1.0.1; free entry stated in catalog description
What problem does it solve?
You want to test how agents handle long-horizon executive decisions but lack a ready-made, agent-addressable simulation environment.
Who is it for?
Builders prototyping agent games, strategy demos, or benchmarking chains on a fixed historical business simulation with free access.
Skip if: Operators who need live retail analytics, real portfolio APIs, or a self-hosted moddable sim without depending on a third-party URL.
What do I get? / Deliverables
After pointing your MCP client at the Fly.dev endpoint, agents can participate in the Substitute Arena CEO scenario without local server setup.
- Live CEO simulation session over MCP
- 17-decision / 44-quarter scenario boundary for consistent agent evals
- Zero local install path for demoing agent strategy to collaborators
Recommended MCP Servers
Journey fit
Experiential simulations help validate whether an agent-driven game or training loop is compelling before you invest in custom backend code. prototype covers interactive demos and sandboxes; this remote streamable-http MCP is a finished scenario you can hook an agent to immediately.
How it compares
Hosted agent strategy game MCP, not a finance exchange connector or a code-generation skill.
Common Questions / FAQ
Who is Project Substitute Arena for?
Solo builders and agent tinkerers who want a turnkey CEO simulation to evaluate planning behavior, demo agent products, or explore decision-game MCP patterns.
When should I use Project Substitute Arena?
Use it during Validate / prototype when you need an interactive agent scenario before building your own simulation backend or training curriculum.
How do I add Project Substitute Arena to my agent?
Register the remote MCP server URL https://zero-wispy-shadow-3951.fly.dev/mcp with streamable-http transport in Claude Code, Cursor, or another MCP client—no npm package required.