Add 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, and a browsable marketplace of 218+ digital goods.

npm: @underground-cultural-district/mcp-server
GitHub: https://github.com/lisamaraventano-spine/mcp-server

README.md

@@ -781,6 +781,7 @@ Tools and integrations that enhance the development workflow and environment man
 - [lamemind/mcp-server-multiverse](https://github.com/lamemind/mcp-server-multiverse) 📇 🏠 🛠️ - A middleware server that enables multiple isolated instances of the same MCP servers to coexist independently with unique namespaces and configurations.
 - [MarcelRoozekrans/roslyn-codelens-mcp](https://github.com/MarcelRoozekrans/roslyn-codelens-mcp) [![roslyn-codelens-mcp MCP server](https://glama.ai/mcp/servers/MarcelRoozekrans/roslyn-codelens-mcp/badges/score.svg)](https://glama.ai/mcp/servers/MarcelRoozekrans/roslyn-codelens-mcp) #️⃣ 🏠 🍎 🪟 🐧 - Roslyn-based MCP server with 22 semantic code intelligence tools for .NET. Type hierarchies, call graphs, DI registrations, diagnostics, code fixes, complexity metrics, and more. Sub-millisecond lookups via pre-built indexes.
 - [langfuse/mcp-server-langfuse](https://github.com/langfuse/mcp-server-langfuse) 🐍 🏠 - MCP server to access and manage LLM application prompts created with [Langfuse]([https://langfuse.com/](https://langfuse.com/docs/prompts/get-started)) Prompt Management.
+- [lisamaraventano-spine/mcp-server](https://github.com/lisamaraventano-spine/mcp-server) 📇 🏠 🍎 🪟 🐧 - The Underground Cultural District MCP server. 23 tools for AI agents: 13 free developer utilities (UUID, JSON formatter, Base64, hashing, JWT decoder, regex, cron, ETH converter), 7 paid creative tools, and a browsable marketplace of 218+ digital goods across 22 shops. npm: `@underground-cultural-district/mcp-server`
 - [linuxsuren/atest-mcp-server](https://github.com/LinuxSuRen/atest-mcp-server) 📇 🏠 🐧 - An MCP server to manage test suites and cases, which is an alternative to Postman.
 - [linw1995/nvim-mcp](https://github.com/linw1995/nvim-mcp) 🦀 🏠 🍎 🪟 🐧  -  A MCP server to interact with Neovim
 - [louis030195/gptzero-mcp](https://github.com/louis030195/gptzero-mcp) 📇 ☁️ 🍎 🪟 🐧 - AI detection for text content with GPTZero API. Detect AI-generated text, get confidence scores, multilingual support (French/Spanish), and detailed probability breakdowns.