ALDC (AL Development Collection) transforms how you develop Business Central extensions with Claude Code. Instead of ad-hoc code generation, ALDC provides structured, contract-driven development with human-in-the-loop gates.ALDC (AL Development Collection) is a comprehensive AI-assisted development toolkit for Microsoft Dynamics 365 Business Central. It provides 4 specialized agents (architect, conductor, developer, presales), 11 domain knowledge skills (API, events, pages, performance, testing, etc.), and 6 development workflows (spec creation, build, PR preparation, etc.). Key features: • Extension-only development — never modifies base application objects • Human-in-the-Loop gates at critical decision points • TDD/spec-driven development cycle • Event-driven architecture patterns • Skills Evidencing — agents declare which skills and patterns they applied • 8 path-scoped AL rules (injected via /aldc:al-initialize) • 3 MCP servers for AL symbols, documentation, and Microsoft Learn First-time setup: run /aldc:al-initialize in your AL project directory.