LangGraph

Low-level orchestration framework from LangChain for building resilient, stateful agents as graphs.

Agent access

Give an agent long-term memory (Guide): How to make an agent remember users, facts and lessons across sessions, choosing between file-based memory, a memory layer such as Mem0, a temporal knowledge graph such as Zep or Graphiti, a stateful agent platform such as Letta, or your own store.
Research agent stack (Stack): An agent that searches the web and the scholarly record, reads full sources, runs analysis code in a sandbox and cites what it found, with tracing so you can audit how it got there.