Stateful Agents Python Packages

letta

Stateful agents that are like people, with memory, identity, and the ability to learn and adapt

fast-langgraph

High-performance Rust accelerators for LangGraph applications. Drop-in components that provide up to 700x speedups for checkpoint operations and 10-50x speedups for state management.

packwright

Build your agent once. Carry it everywhere. Compiles portable agent packs for Pi, Codex, Claude Code, and Cursor.

letta-ejentum

Letta integration for the Ejentum Reasoning Harness. 8 Python functions (4 harnesses × dynamic + adaptive) registered via tools.upsert_from_function.