During November 2025, S. Cabotse developed new business management and payment processing features across the modelcontextprotocol/servers and punkpeye/awesome-mcp-servers repositories. Cabotse introduced Kash.click, a suite for managing sales, clients, and point of sale operations, leveraging backend development and business management software expertise. They implemented HTTP 402 support for Solana-based MCP servers, enabling seamless payment processing and expanding transaction capabilities. The work emphasized data integrity by certifying accounting data with HMAC-SHA256 and integrating API protocols for reliable sales data capture. Cabotse’s contributions demonstrated depth in HTTP standards, Solana integration, and backend architecture, addressing operational needs for centralized business management and verifiable transactions.