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Agent Memory & RAG

M Flow

M Flow is a public Python cognitive memory engine for Graph RAG and AI-agent retrieval. It uses a cone-shaped knowledge graph and scores evidence paths to assemble context from connected memory units.

Independent OpenViST project profile, based on linked sources.

M Flow — OpenViST project profile in Agent Memory & RAG.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use M Flow when a retrieval task depends on tracing relationships between facts, events and entities, rather than ranking isolated text chunks by similarity.

Who it is for

  • Developers building AI agents
  • Agent builders working with episodic or long-term memory
  • Teams implementing Graph RAG or knowledge-graph-backed context retrieval

Documented uses

  • Retrieve context through scored evidence paths instead of simple chunk matching
  • Store and retrieve episodic and long-term agent memory
  • Assemble context from Episodes, Facets, FacetPoints and Entities
  • Build a knowledge-graph-backed memory component for an AI system
Before you choose

Requirements & limits

The repository is public and uses the Apache-2.0 license. The README identifies Python 3.10–3.13. It is presented as self-hosted, server and CLI software; no pricing or account requirement is documented.

  • Its graph is used as the retrieval scoring engine, not only as an organizational layer.
  • Queries can anchor at different granularities, from Entity and FacetPoint to Facet and Episode.
  • Returned bundles are Episodes scored by their strongest connected evidence path.
  • MCP is listed among the repository topics, but the exact interface and configuration are not documented.
  • A specific-agent integration is not verified in the supplied material.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Evidence and transparency

Sources & review

Source record details
Source availability
Active
Sources checked
1 October 2026
Original website title
FlowElement-xinliuyuansu/m_flow · Official homepage title · retained in its source language