Letta Python Packages

letta

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

heropen

pip install heropen — Long-term memory for local AI agents. 100% local, no cloud, MCP protocol.

fathom-read

Catch the step where an AI agent contradicts its own earlier decision. CLI and adapters for LangGraph, CrewAI, Letta, OpenInference, DBOS and multi-agent logs, plus an expiry read for long-running agents.

letta-evals

Evaluation kit for testing stateful agents

cortexm

Deterministic agent memory. μ=0. Free, local, forever. Mem0-compatible.

synix

Memory architectures that evolve with your agent

right-rudder

Catch the step where an AI agent contradicts its own earlier decision. CLI and adapters for LangGraph, CrewAI, Letta, OpenInference, DBOS and multi-agent logs, plus an expiry read for long-running agents.

context-m-langchain

Deterministic agent memory. μ=0. Free, local, forever. Mem0-compatible.

phionyx-letta

Primitives for recording Letta memory mutations as hash-chained runtime-evidence envelopes; optional signing; automatic instrumentation not yet included.

ceki-letta

Letta toolkit for Ceki — drive a real Chrome session from your Letta agent. Variant C structural tools + persistent sessions via Letta archival memory.

letta-ejentum

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

letta-ceki

Letta toolkit for Ceki — drive a real Chrome session from your Letta agent. Variant C structural tools + persistent sessions via Letta archival memory.

unicontext

The only Python SDK you need for your agents to interoperate between any context layer.