Fast GraphRAG is a streamlined and promptable framework designed for interpretable, high-accuracy, agent-driven retrieval workflows. It provides a human-navigable view of knowledge through graph construction, supporting queries, visualization, and updates. This framework is designed for large-scale operations without heavy resource or cost requirements, automatically generating and optimizing graphs to fit specific domain and ontology needs, while supporting real-time updates. Fast GraphRAG enhances accuracy and reliability through PageRank-based graph exploration and is fully asynchronous, offering complete type support for robust and predictable workflows.