turn-based-game-mcp

A learning/demonstration monorepo containing a Next.js (TypeScript) web app for turn-based games (Tic-Tac-Toe and Rock Paper Scissors) plus an MCP server that exposes tools to create games and have an AI opponent make moves/choices at multiple difficulty levels. Includes shared game logic/types and an MCP stdio setup for MCP-compatible clients.

Evaluated Mar 30, 2026 (21d ago)

Repo ↗ Ai Ml ai mcp mcp-server nextjs typescript turn-based-games game-development web-app learning-demo

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

Intended as a demo; README does not mention TLS enforcement (for production) or any authentication/authorization. No details on secret management or dependency scanning in the provided content. As a local stdio MCP server, exposure depends heavily on how it’s deployed/run.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want a local/developer-friendly reference implementation of MCP tool wiring around game logic (stdlib/stdio MCP) and a simple web UI.

Avoid When

You need a production-grade API surface with strong security primitives, explicit SLAs, and clearly specified rate limiting/auth policies.

Use Cases

• Demo/learning for building turn-based game backends with MCP
• Prototyping MCP tool definitions for game-AI interactions
• Integrating an AI opponent into a web UI via shared game state and API endpoints
• Testing shared deterministic game logic and AI move selection across workspaces

Not For

• Production deployments requiring strong security/compliance guarantees
• Public multi-tenant services where authentication, authorization, and rate limiting must be enforced
• Use cases needing documented SDKs, hosted endpoints, or guaranteed API stability

Interface

REST API

Yes

GraphQL

gRPC

MCP Server

Yes

SDK

Webhooks

Authentication

OAuth: No Scopes: No

No authentication/authorization mechanism is described for the REST endpoints or MCP server. Likely intended for local demo use.

Pricing

Free tier: No

Requires CC: No

Repository README describes a demo app; no hosting/pricing model provided.

Agent Metadata

Pagination

none

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ MCP server is stdio-based and must be built/run before use; ensure dist/index.js exists in mcp-server workspace.
⚠ REST API endpoints are described at a high level; without detailed schemas/examples, agents may need to infer request/response payloads.
⚠ No described auth/rate-limit/idempotency/retry semantics; agents should be cautious with retries and duplicate moves.

Alternatives

Build an MCP server around a backend game engine (custom) with OpenAPI/SDKs Use an existing turn-based game framework + a separate MCP gateway/adapter Implement AI opponents directly in the web app without MCP (simpler integration)

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Scores are editorial opinions as of 2026-03-30.