How should Lemonade-Stand-MCP-Server be evaluated before use?

Use the required flow: snapshot, contract, and trust before recommending or executing this mcp.

What kind of evidence is visible on this page?

This page surfaces public facts, change history, trust indicators, artifact evidence, and benchmark summaries with provenance.

Crawler Summary

Lemonade-Stand-MCP-Server answer-first brief

MCP server for Lemonade Stand game 🍋 Lemonade Stand MCP Server A simple, working example of a Model Context Protocol (MCP) server that lets you play the classic Lemonade Stand game through Claude Desktop. What is MCP? Model Context Protocol (MCP) is an open standard that enables AI models like Claude to interact with external data sources and tools. This server demonstrates how MCP works by implementing the classic Lemonade Stand game as a set of too Published capability contract available. No trust telemetry is available yet. 7 GitHub stars reported by the source. Last updated 2/24/2026.

Freshness

Last checked 2/22/2026

Best For

Contract is available with explicit auth and schema references.

Not Ideal For

Lemonade-Stand-MCP-Server is not ideal for teams that need stronger public trust telemetry, lower setup complexity, or more explicit contract coverage before production rollout.

Evidence Sources Checked

editorial-content, capability-contract, runtime-metrics, public facts pack

Card Facts Snapshot Contract Trust

Claim this agent

Agent DossierGitHubSafety: 93/100

Lemonade-Stand-MCP-Server

MCPverified

Public facts

Change events

Artifacts

Freshness

Feb 22, 2026

Verifiededitorial-content1 verified compatibility signal7 GitHub stars

Published capability contract available. No trust telemetry is available yet. 7 GitHub stars reported by the source. Last updated 2/24/2026.

7 GitHub starsSchema refs publishedTrust evidence available

Trust score

Unknown

Compatibility

MCP

Freshness

Feb 22, 2026

Vendor

Jimmcq

Artifacts

Benchmarks

Last release

1.0.0

Executive Summary

Key links, install path, and a quick operational read before the deeper crawl record.

Verifiededitorial-content

Summary

Published capability contract available. No trust telemetry is available yet. 7 GitHub stars reported by the source. Last updated 2/24/2026.

View Source

Setup snapshot

git clone https://github.com/jimmcq/Lemonade-Stand-MCP-Server.git

1
Setup complexity is MEDIUM. Standard integration tests and API key provisioning are required before connecting this to production workloads.
2
Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Evidence Ledger

Everything public we have scraped or crawled about this agent, grouped by evidence type with provenance.

Verifiededitorial-content

Vendor (1)

Vendor

Jimmcq

profilemedium

Observed Feb 24, 2026Source link Provenance

Compatibility (2)

Protocol compatibility

MCP

contracthigh

Observed Feb 24, 2026Source link Provenance

Auth modes

mcp, api_key

contracthigh

Observed Feb 24, 2026Source link Provenance

Artifact (1)

Machine-readable schemas

OpenAPI or schema references published

contracthigh

Observed Feb 24, 2026Source link Provenance

Adoption (1)

Adoption signal

7 GitHub stars

profilemedium

Observed Feb 24, 2026Source link Provenance

Security (1)

Handshake status

UNKNOWN

trustmedium

Observed unknownSource link Provenance

Integration (1)

Crawlable docs

6 indexed pages on the official domain

search_documentmedium

Observed Apr 15, 2026Source link Provenance

Release & Crawl Timeline

Merged public release, docs, artifact, benchmark, pricing, and trust refresh events.

Self-declaredagent-index

Docs Update

Docs refreshed: Sign in to GitHub · GitHub

search_documentmedium

Fresh crawlable documentation was indexed for the official domain.

Observed Apr 15, 2026

Artifacts Archive

Extracted files, examples, snippets, parameters, dependencies, permissions, and artifact metadata.

Self-declaredGITHUB MCP

Extracted files

Examples

Snippets

Languages

typescript

Executable Examples

bash

git clone https://github.com/yourusername/Lemonade-Stand-MCP-Server.git
   cd Lemonade-Stand-MCP-Server

bash

npm install

json

{
     "mcpServers": {
       "lemonade-stand": {
         "command": "node",
         "args": [
           "/absolute/path/to/Lemonade-Stand-MCP-Server/server.js"
         ]
       }
     }
   }

json

{
  "mcpServers": {
    "lemonade-stand": {
      "command": "wsl.exe",
      "args": [
        "/home/username/.nvm/versions/node/v20.11.1/bin/node",
        "/home/username/projects/Lemonade-Stand-MCP-Server/server.js"
      ]
    }
  }
}

json

{
  "mcpServers": {
    "lemonade-stand": {
      "command": "npx",
      "args": [
        "/path/to/Lemonade-Stand-MCP-Server/server.js"
      ]
    }
  }
}

text

Lemonade-Stand-MCP-Server/
├── server.js              # Main MCP server implementation
├── package.json           # Node.js dependencies
└── README.md             # This file

Docs & README

Full documentation captured from public sources, including the complete README when available.

Self-declaredGITHUB MCP

Docs source

GITHUB MCP

Editorial quality

ready

Full README

🍋 Lemonade Stand MCP Server

A simple, working example of a Model Context Protocol (MCP) server that lets you play the classic Lemonade Stand game through Claude Desktop.

What is MCP?

Model Context Protocol (MCP) is an open standard that enables AI models like Claude to interact with external data sources and tools. This server demonstrates how MCP works by implementing the classic Lemonade Stand game as a set of tools that Claude can use.

Features

🌤️ Dynamic weather system affecting sales
💰 Business simulation with supply and demand
📊 Strategic pricing and inventory management
🏁 14-day game cycle with profit tracking
🎮 Fully playable through Claude Desktop

Prerequisites

Node.js (v20.11.1 or higher recommended)
Claude Desktop
npm (comes with Node.js)

Quick Start

Clone this repository:

git clone https://github.com/yourusername/Lemonade-Stand-MCP-Server.git
cd Lemonade-Stand-MCP-Server

Install dependencies:
```
npm install
```
Find your Claude Desktop configuration file:
- macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
- Windows: %APPDATA%\Claude\claude_desktop_config.json

Configure Claude Desktop:

{
  "mcpServers": {
    "lemonade-stand": {
      "command": "node",
      "args": [
        "/absolute/path/to/Lemonade-Stand-MCP-Server/server.js"
      ]
    }
  }
}

Restart Claude Desktop
You should now see a hammer icon in Claude Desktop, indicating the MCP server is connected!

Playing the Game

Once the server is connected, simply start a new chat with Claude and say:

"Play a complete game of Lemonade Stand using the MCP tools available."

Claude will then:

Start a new game
Analyze the weather conditions
Make strategic decisions about supplies and pricing
Report daily results
Continue until Day 14 or your business fails

Game Mechanics

Weather System: Temperature and conditions affect customer traffic
Supply Chain: Buy cups, lemons, sugar, and ice at different prices
Price Strategy: Set your price per cup to balance profit and demand
Inventory Management: Ice melts daily; manage your supplies wisely
Customer Demand: Based on weather, price, and available inventory

Available Tools

The server exposes these MCP tools to Claude:

start_game: Begin a new game session
get_game_state: Check current status, money, inventory, and weather
buy_supplies: Purchase cups, lemons, sugar, and ice
set_price: Set the price per cup of lemonade
sell_lemonade: Open for business and see daily results
next_day: Advance to the next day

Configuration Examples

For WSL Users

{
  "mcpServers": {
    "lemonade-stand": {
      "command": "wsl.exe",
      "args": [
        "/home/username/.nvm/versions/node/v20.11.1/bin/node",
        "/home/username/projects/Lemonade-Stand-MCP-Server/server.js"
      ]
    }
  }
}

Using NPX

{
  "mcpServers": {
    "lemonade-stand": {
      "command": "npx",
      "args": [
        "/path/to/Lemonade-Stand-MCP-Server/server.js"
      ]
    }
  }
}

Troubleshooting

No hammer icon in Claude Desktop:
- Ensure Claude Desktop is up to date
- Check that the configuration file path is correct
- Verify Node.js is installed and accessible
- Check Claude Desktop logs in:
  - Windows: %APPDATA%\Claude\logs\
  - macOS: ~/Library/Logs/Claude/
Server connection error:
- Verify the server path in your configuration is absolute
- Test the server directly with node server.js
- Check for any errors in the Claude Desktop logs
WSL-specific issues:
- Ensure Node.js is installed in WSL
- Use the full path to the Node.js binary
- Check WSL is properly installed and running

Development

To modify the server:

Edit server.js to change game mechanics or add new tools
Test locally with node server.js
Restart Claude Desktop to load changes

Project Structure

Lemonade-Stand-MCP-Server/
├── server.js              # Main MCP server implementation
├── package.json           # Node.js dependencies
└── README.md             # This file

How It Works

This MCP server implements a simple game loop:

The server maintains game state in memory
Each tool represents a game action (buy, sell, etc.)
When Claude calls a tool, the server updates the game state
Results are returned to Claude as JSON
Claude analyzes the results and decides the next action

This demonstrates how MCP can be used to create interactive experiences where AI models can maintain state, make decisions, and interact with complex systems.

Contributing

Feel free to open issues or submit pull requests if you have ideas for improvements or find bugs.

License

MIT

Built as an example of the Model Context Protocol in action.

Contract & API

Machine endpoints, protocol fit, contract coverage, invocation examples, and guardrails for agent-to-agent use.

Verifiedcapability-contract

Endpoints

Dossier API Snapshot API Contract API Trust API

Contract coverage

Status

ready

Auth

mcp, api_key

Streaming

Data region

global

Protocol support

MCP: verified

Requires: mcp, lang:typescript

Forbidden: none

Guardrails

Operational confidence: medium

Contract is available with explicit auth and schema references.

Trust confidence is not low and verification freshness is acceptable.

Protocol support is explicitly confirmed in contract metadata.

Invocation examples

curl -s "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/snapshot"

curl -s "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract"

curl -s "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/trust"

Reliability & Benchmarks

Trust and runtime signals, benchmark suites, failure patterns, and practical risk constraints.

Missingruntime-metrics

Trust signals

Handshake

UNKNOWN

Confidence

unknown

Attempts 30d

unknown

Fallback rate

unknown

Runtime metrics

Observed P50

unknown

Observed P95

unknown

Rate limit

unknown

Estimated cost

unknown

No benchmark suites or observed failure patterns are available.

Media & Demo

Every public screenshot, visual asset, demo link, and owner-provided destination tied to this agent.

Missingno-media

No screenshots, media assets, or demo links are available.

Related Agents

Neighboring agents from the same protocol and source ecosystem for comparison and shortlist building.

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MCPmcpmcp-registry

Machine Appendix

Contract JSON

{
  "contractStatus": "ready",
  "authModes": [
    "mcp",
    "api_key"
  ],
  "requires": [
    "mcp",
    "lang:typescript"
  ],
  "forbidden": [],
  "supportsMcp": true,
  "supportsA2a": false,
  "supportsStreaming": false,
  "inputSchemaRef": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server#input",
  "outputSchemaRef": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server#output",
  "dataRegion": "global",
  "contractUpdatedAt": "2026-02-24T19:46:49.853Z",
  "sourceUpdatedAt": "2026-02-24T19:46:49.853Z",
  "freshnessSeconds": 19554716
}

Invocation Guide

{
  "preferredApi": {
    "snapshotUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/snapshot",
    "contractUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "trustUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/trust"
  },
  "curlExamples": [
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/snapshot\"",
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract\"",
    "curl -s \"https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/trust\""
  ],
  "jsonRequestTemplate": {
    "query": "summarize this repo",
    "constraints": {
      "maxLatencyMs": 2000,
      "protocolPreference": [
        "MCP"
      ]
    }
  },
  "jsonResponseTemplate": {
    "ok": true,
    "result": {
      "summary": "...",
      "confidence": 0.9
    },
    "meta": {
      "source": "GITHUB_MCP",
      "generatedAt": "2026-10-09T03:38:46.800Z"
    }
  },
  "retryPolicy": {
    "maxAttempts": 3,
    "backoffMs": [
      500,
      1500,
      3500
    ],
    "retryableConditions": [
      "HTTP_429",
      "HTTP_503",
      "NETWORK_TIMEOUT"
    ]
  }
}

Trust JSON

{
  "status": "unavailable",
  "handshakeStatus": "UNKNOWN",
  "verificationFreshnessHours": null,
  "reputationScore": null,
  "p95LatencyMs": null,
  "successRate30d": null,
  "fallbackRate": null,
  "attempts30d": null,
  "trustUpdatedAt": null,
  "trustConfidence": "unknown",
  "sourceUpdatedAt": null,
  "freshnessSeconds": null
}

Capability Matrix

{
  "rows": [
    {
      "key": "MCP",
      "type": "protocol",
      "support": "supported",
      "confidenceSource": "contract",
      "notes": "Confirmed by capability contract"
    }
  ],
  "flattenedTokens": "protocol:MCP|supported|contract"
}

Facts JSON

[
  {
    "factKey": "docs_crawl",
    "category": "integration",
    "label": "Crawlable docs",
    "value": "6 indexed pages on the official domain",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  },
  {
    "factKey": "protocols",
    "category": "compatibility",
    "label": "Protocol compatibility",
    "value": "MCP",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:49.853Z",
    "isPublic": true
  },
  {
    "factKey": "auth_modes",
    "category": "compatibility",
    "label": "Auth modes",
    "value": "mcp, api_key",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:49.853Z",
    "isPublic": true
  },
  {
    "factKey": "schema_refs",
    "category": "artifact",
    "label": "Machine-readable schemas",
    "value": "OpenAPI or schema references published",
    "href": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server#input",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/contract",
    "sourceType": "contract",
    "confidence": "high",
    "observedAt": "2026-02-24T19:46:49.853Z",
    "isPublic": true
  },
  {
    "factKey": "vendor",
    "category": "vendor",
    "label": "Vendor",
    "value": "Jimmcq",
    "href": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server",
    "sourceUrl": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "traction",
    "category": "adoption",
    "label": "Adoption signal",
    "value": "7 GitHub stars",
    "href": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server",
    "sourceUrl": "https://github.com/jimmcq/Lemonade-Stand-MCP-Server",
    "sourceType": "profile",
    "confidence": "medium",
    "observedAt": "2026-02-24T19:43:14.176Z",
    "isPublic": true
  },
  {
    "factKey": "handshake_status",
    "category": "security",
    "label": "Handshake status",
    "value": "UNKNOWN",
    "href": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/trust",
    "sourceUrl": "https://www.xpersona.co/api/v1/agents/mcp-jimmcq-lemonade-stand-mcp-server/trust",
    "sourceType": "trust",
    "confidence": "medium",
    "observedAt": null,
    "isPublic": true
  }
]

Change Events JSON

[
  {
    "eventType": "docs_update",
    "title": "Docs refreshed: Sign in to GitHub · GitHub",
    "description": "Fresh crawlable documentation was indexed for the official domain.",
    "href": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceUrl": "https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fopenclaw%2Fskills%2Ftree%2Fmain%2Fskills%2Fasleep123%2Fcaldav-calendar",
    "sourceType": "search_document",
    "confidence": "medium",
    "observedAt": "2026-04-15T05:03:46.393Z",
    "isPublic": true
  }
]