Memento

Memento is a local, open-source MCP (Model Context Protocol) server that gives AI tools persistent, cross-session memory on your own machine. It builds a knowledge graph from your AI interactions—entities, decisions, project history, preferences—and makes them available to any compatible AI tool, so every session starts exactly where the last one left off. Designed for engineers, teams, and anyone using AI tools who want privacy, control, and rich long-term context without relying on the cloud.