MüllMate is a multilingual, tool-calling RAG assistant for residents of Kiel, Germany. Ask which bin something goes in, what a bin costs, which form you need, where the nearest glass container is, or when your next pickup is, and get a concise answer grounded in the city's actual waste statute and fee schedule, with the sources shown. Live at https://www.muellmate.de/
Stack
Next.js 16, LangChain.js + LangGraph.js via OpenRouter, Supabase (Postgres, pgvector, Auth), Drizzle ORM, multilingual-e5-small embeddings, Bun, Playwright, RAGAs.
