GrayMatter runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 20 Sep 2026.
Persistent agent memory as a single Go binary: knowledge graph, TUI observability, zero infra.
What the code does
We read the source, 11 h ago · rules 3dff92dd89df
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
outDir = filepath.Join(dataDir, "export", format)
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
This code can reach further than it looks
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
Alternatives to GrayMatter
same job, measured the same wayPersistent memory infrastructure for AI agents. Identity, knowledge graph, and search.
Persistent memory for AI agents. Remember, recall, and explore a shared knowledge graph.
Zero-knowledge persistent memory layer for AI agents. Encrypted client-side, hosted in France.
Persistent long-term memory for AI agents: semantic search, knowledge graph, and task canvas.
Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.
Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.
Knowledge Graphs to enable memory persistence, knowledge evolution, explainable interaction.
Persistent knowledge-graph memory for AI agents, with local semantic search. No API keys.
GrayMatter — questions
Answers built from our own checks of this server.