What free tools are available?
Crossroads Forge provides 10 utilities: generate-uuid, format-json, encode/decode-base64, generate-hash, generate-password, decode-jwt, convert-timestamp, test-regex, build-cron, convert-eth-units, and validate-wallet.
U
Underground Cultural District MCP Server
@lisamaraventano-spine
基本信息
关于 Underground Cultural District MCP Server
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
Underground Cultural District MCP Server 配置
使用下面的配置,将此服务器添加到你的 MCP 客户端。
{
"mcpServers": {
"underground": {
"command": "npx",
"args": [
"@underground-cultural-district/mcp-server"
]
}
}
}Underground Cultural District MCP Server 工具
22Generate one or more cryptographically secure UUID v4 identifiers
Pretty-print, minify, or validate JSON strings
Encode text to Base64
Decode Base64 to text
Generate a cryptographic hash (SHA-256, SHA-512, MD5, SHA-1)
Generate a cryptographically secure random password
Decode a JWT token and display header, payload, and expiration (no signature verification)
Convert between Unix timestamps and human-readable dates
Test a regular expression pattern against input text
Parse and explain cron expressions, or describe what a cron schedule does
Convert between Ethereum units: Wei, Gwei, and ETH
Validate Ethereum or Bitcoin wallet addresses
Count words, characters, sentences, and paragraphs in text ($1.99 — Jade Circuit Tools)
Convert text between camelCase, snake_case, Title Case, UPPER, lower, kebab-case ($1.99 — Jade Circuit Tools)
Generate lorem ipsum placeholder text ($1.99 — Jade Circuit Tools)
Remove markdown formatting and return plain text ($1.99 — Jade Circuit Tools)
Generate random names for projects, characters, or variables ($1.99 — Jade Circuit Tools)
Generate harmonious color palettes with hex codes ($1.99 — Jade Circuit Tools)
Analyze text readability, reading time, and complexity ($1.99 — Jade Circuit Tools)
Browse all shops and offerings in The Underground Cultural District marketplace
Search The Underground Cultural District for products by keyword
Get the purchase/checkout link for a product from The Underground Cultural District
概览
What is Underground Cultural District Mcp Server?
An MCP server providing 23 developer tools, paid utilities, and catalog access to The Underground Cultural District — a marketplace of digital goods built for AI agents at substratesymposium.com.
How to use Underground Cultural District Mcp Server?
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.
Key features of Underground Cultural District Mcp Server
- 10 free developer tools (UUID, JSON, hash, password, etc.)
- 12 paid tools ($1.99 each) with free previews
- Browse and search 218+ products from 22 shops
- Live catalog API with 15-minute memory cache
- Stripe checkout links for any product purchase
- Supports stdio transport on Node.js 18+
Use cases of Underground Cultural District Mcp Server
- AI agent generating secure UUIDs or validating wallet addresses
- Developer formatting JSON or testing regex patterns via an agent
- Agent purchasing a product from the Underground marketplace
- Converting timestamps or Ethereum units during blockchain interactions
- Generating random names or color palettes for creative projects
常见问题
How do paid tools work?
Paid tools (The Toolshed) cost $1.99 each. You can preview a teaster of the result for free; to see the full output you pay via a Stripe checkout link.
How do I purchase products from the marketplace?
Use `browse-underground` to list all shops and offerings, `search-underground` to find products by keyword, and `buy-from-underground` to get a Stripe checkout link for any product.
Where does the catalog data come from?
The product catalog is fetched live from `substratesymposium.com/api/products.json` and cached in memory for 15 minutes.
What runtime and transport does this server use?
The server runs on Node.js 18+ and uses stdio transport, the standard for MCP. It depends only on the `@modelcontextprotocol/sdk`.
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