Penfield

Penfield gives AI agents long-term memory that compounds over time. Instead of starting every session from zero, your agent remembers conversations, learns preferences, connects ideas, and picks up exactly where it left off. Hybrid search (BM25 + vector + graph traversal) finds what matters. 24 relationship types build real knowledge graphs, not just vector dumps. Context checkpoints enable seamless handoffs between sessions and agents. Signup at https://penfield.app. Provides AI and machine learning capabilities through the Model Context Protocol.