mcp-einvoicing-coreDeveloper ToolsFinancePayments & BillingcmendezsAlicense-Not gradedqualityBmaintenanceBase library for building MCP e-invoicing servers: abstract base classes, shared Pydantic models, XML utilities, and OAuth2-capable async HTTP client. Updated 16 days ago (2026-10-21 21:00 UTC)Apache 2.0