Persistent knowledge-graph memory for AI agents: MCP server on SurrealDB with spreading activation and decay
View on GitHub ↗An open-core memory graph for your AI tools. Run it yourself, or use ours in the EU.
Agents lose the reasoning behind a decision when the session ends, and each client keeps separate notes. Zero is an MCP server that gives Claude, ChatGPT, Cursor and any other MCP client one shared memory. Agents record decisions, problems and approaches together with the reason, as typed nodes in a graph. A later session, in any client, finds them by meaning instead of keyword, so the reasoning behind last month's choice is there when someone is about to undo it. It is for developers who use several AI clients on the same product, and for teams that keep re-deciding things because nobody remembers why.
A notes file grows until nobody reads it, and a plain vector store returns the closest text with nothing around it. Zero keeps the reason with each decision, links related nodes so a hit brings its context along, and lets knowledge nobody uses drop down the ranking. Nothing is deleted. It stores what the agent was asked to keep, not your chats.
The core is Apache-2.0. The team features in src/ee/ are source-available: free for noncommercial use under PolyForm Noncommercial, with a commercial licence for everything else. Zero also runs on SurrealDB (Business Source License), so the repository as a whole is not OSI open source. Details are in Licence.
To try the hosted service (free for one person, data stored in Frankfurt), add it to Claude Code and run /mcp to sign in. To run it on your own machine, see Getting started.
From the project README.
Add the radar badge to your README — it shows your project was picked up by MCP Radar and links to this page:
[](https://mcp.liqiwa.com/s/Komplyzen--komplyt-zero.html)
The provenance-first personal graph engine behind Wend. A typed graph of people, organizations and events where every fact carries a source, every AI write is a human-confirmed proposal, and any MCP-c
shinegang/baronBaron Munchausen — local memory for coding agents that outlives the chat, with a verdict on every answer. Public alpha.
zamansheikh/memory-leanA token-lean MCP memory server for AI coding agents: a knowledge graph your agent can search without reading the whole thing. Drop-in replacement for the reference memory server.
slxca/opencontextA Model Context Protocol server for persistent project-specific AI agent context.
replenhq/replenSmarter AI Development Workflows
rwnalds/engramSelf-hosted MCP server + dashboard giving Claude Code, Cursor & Hermes agents shared long-term memory over a git-backed markdown vault. Agent-native, Obsidian-compatible second brain — markdown RAG, n
The top new MCP servers of the week, every Monday. No spam, unsubscribe anytime.