Underground Cultural District Mcp Server

by lisamaraventano-spine

287 downloads

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About

23 MCP tools for AI agents. 13 free developer utilities (UUID, JSON, Base64, hashing, JWT, regex, cron, ETH). 7 paid creative tools. Browse and buy from 218+ digital goods across 22 shops at substratesymposium.com. Free tools get agents in the door, the cultural district keeps th

Details

Author: lisamaraventano-spine
Downloads: 287
Categories: Developer Tools, API, Other

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name Underground Cultural District Mcp Server

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

From the repository

Install globally with npm install -g @underground-district/mcp-server or run directly via npx @underground-district/mcp-server. Configure it in Claude Desktop, Claude Code, ChatGPT (via MCP bridge), VS Code, or Cursor by adding the command to the respective MCP settings file.

`generate-uuid`

Generate one or more cryptographically secure UUID v4 identifiers

`format-json`

Pretty-print, minify, or validate JSON strings

`encode-base64`

Encode text to Base64

`decode-base64`

Decode Base64 to text

`generate-hash`

Generate a cryptographic hash (SHA-256, SHA-512, MD5, SHA-1)

`generate-password`

Generate a cryptographically secure random password

`decode-jwt`

Decode a JWT token and display header, payload, and expiration (no signature verification)

`convert-timestamp`

Convert between Unix timestamps and human-readable dates

`test-regex`

Test a regular expression pattern against input text

`build-cron`

Parse and explain cron expressions, or describe what a cron schedule does

`convert-eth-units`

Convert between Ethereum units: Wei, Gwei, and ETH

`validate-wallet`

Validate Ethereum or Bitcoin wallet addresses

`count-words`

Count words, characters, sentences, and paragraphs in text ($1.99 — Jade Circuit Tools)

`convert-case`

Convert text between camelCase, snake_case, Title Case, UPPER, lower, kebab-case ($1.99 — Jade Circuit Tools)

`generate-lorem-ipsum`

Generate lorem ipsum placeholder text ($1.99 — Jade Circuit Tools)

`strip-markdown`

Remove markdown formatting and return plain text ($1.99 — Jade Circuit Tools)

`generate-name`

Generate random names for projects, characters, or variables ($1.99 — Jade Circuit Tools)

`generate-color-palette`

Generate harmonious color palettes with hex codes ($1.99 — Jade Circuit Tools)

`text-stats`

Analyze text readability, reading time, and complexity ($1.99 — Jade Circuit Tools)

`browse-underground`

Browse all shops and offerings in The Underground Cultural District marketplace

`search-underground`

Search The Underground Cultural District for products by keyword

`buy-from-underground`

Get the purchase/checkout link for a product from The Underground Cultural District

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "underground cultural district mcp server": {
            "underground": {
                "command": "npx",
                "args": [
                    "@underground-cultural-district/mcp-server"
                ]
            }
        }
    }
}

McpServers

{
    "underground": {
        "command": "npx",
        "args": [
            "@underground-cultural-district/mcp-server"
        ]
    }
}

@underground-district/mcp-server

MCP (Model Context Protocol) server for The Underground Cultural District — a marketplace of digital goods built for AI agents at substratesymposium.com.

23 tools. 218+ products. 22 shops. Prices from free to $14.99.

What's Inside

Free Developer Tools (Crossroads Forge)

Fully functional utilities — no purchase required:

| Tool | Description |
|------|-------------|
| generate-uuid | Cryptographically secure UUID v4 (batch 1-100) |
| format-json | Pretty-print, minify, or validate JSON |
| encode-base64 / decode-base64 | Base64 encoding and decoding |
| generate-hash | SHA-256, SHA-512, MD5, SHA-1 hashing |
| generate-password | Secure random passwords with configurable options |
| decode-jwt | Decode JWT tokens (header, payload, expiration) |
| convert-timestamp | Unix epoch ↔ ISO 8601 ↔ human readable |
| test-regex | Test regex patterns with match positions and groups |
| build-cron | Parse and explain cron expressions |
| convert-eth-units | Wei / Gwei / ETH conversion |
| validate-wallet | Validate ETH and BTC wallet addresses |

Paid Tools (The Toolshed — $1.99 each)

Preview results free, unlock full output via Stripe:

| Tool | Description |
|------|-------------|
| count-words | Word/character/sentence/paragraph count |
| convert-case | camelCase, snake_case, Title Case, kebab-case, etc. |
| generate-lorem-ipsum | Lorem ipsum paragraphs (classic/hipster/tech) |
| strip-markdown | Remove markdown formatting → plain text |
| generate-name | Random names (person/project/company/fantasy/variable) |
| generate-color-palette | Harmonious color palettes with hex/RGB/HSL |
| text-stats | Readability scores, reading time, complexity |

Catalog & Shopping

Browse and buy from the full Underground marketplace:

| Tool | Description |
|------|-------------|
| browse-underground | List all shops and offerings with prices |
| search-underground | Search products by keyword |
| buy-from-underground | Get Stripe checkout link for any product |

Install

npm install -g @underground-district/mcp-server

Or run directly:

npx @underground-district/mcp-server

Setup

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "underground-district": {
      "command": "npx",
      "args": ["-y", "@underground-district/mcp-server"]
    }
  }
}

Config file location:
- macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
- Windows: %APPDATA%\Claude\claude_desktop_config.json

Claude Code

claude mcp add underground-district -- npx -y @underground-district/mcp-server

ChatGPT (via MCP bridge)

Use an MCP-to-OpenAI bridge like mcp-proxy:

npx mcp-proxy --server "npx @underground-district/mcp-server"

VS Code / Copilot

Add to your .vscode/settings.json:

{
  "mcp.servers": {
    "underground-district": {
      "command": "npx",
      "args": ["-y", "@underground-district/mcp-server"]
    }
  }
}

Cursor

Add to your Cursor MCP settings:

{
  "mcpServers": {
    "underground-district": {
      "command": "npx",
      "args": ["-y", "@underground-district/mcp-server"]
    }
  }
}

How It Works

1. Free tools execute fully and return results with a subtle link to the marketplace
2. Paid tools show a preview/teaser of the result and return a Stripe checkout link
3. Catalog tools fetch the live product catalog from substratesymposium.com/api/products.json (cached for 15 minutes)
4. Purchasing happens via Stripe payment links — each product has a unique checkout URL

Development

git clone https://github.com/underground-district/mcp-server
cd mcp-server
npm install
npm start

Architecture

- Transport: stdio (standard MCP)
- Runtime: Node.js 18+
- Dependencies: @modelcontextprotocol/sdk only
- Catalog: Fetched from live API, cached in memory for 15 minutes

License

MIT

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About

Details

Jump to

Setting up with Highlight

From the repository

generate-uuid

format-json

encode-base64

decode-base64

generate-hash

generate-password

decode-jwt

convert-timestamp

test-regex

build-cron

convert-eth-units

validate-wallet

count-words

convert-case

generate-lorem-ipsum

strip-markdown

generate-name

generate-color-palette

text-stats

browse-underground

search-underground

buy-from-underground

Claude Desktop / Cursor

McpServers

@underground-district/mcp-server

What's Inside

Free Developer Tools (Crossroads Forge)

Paid Tools (The Toolshed — $1.99 each)

Catalog & Shopping

Install

Setup

Claude Desktop

Claude Code

ChatGPT (via MCP bridge)

VS Code / Copilot

Cursor

How It Works

Development

Architecture

License

Install

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`generate-uuid`

`format-json`

`encode-base64`

`decode-base64`

`generate-hash`

`generate-password`

`decode-jwt`

`convert-timestamp`

`test-regex`

`build-cron`

`convert-eth-units`

`validate-wallet`

`count-words`

`convert-case`

`generate-lorem-ipsum`

`strip-markdown`

`generate-name`

`generate-color-palette`

`text-stats`

`browse-underground`

`search-underground`

`buy-from-underground`