Mnemosyne OS runs on your own machine — the client starts it, so there is no endpoint to ping. 267 installs a week from npm. Last commit 1 Nov 2026.
Memory the human governs, on their own machine, plus what other coding agents here wrote.
What the code does
We read the source, 1 d ago · rules 995398eba69f
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.
renderChronicle(path.join(dir, selected));
const child = spawn(process.execPath, [daemonPath], {
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.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add mcp -- npx -y @mnemosyne_os/mcp{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@mnemosyne_os/mcp"
]
}
}
}[mcp_servers.mcp]
command = "npx"
args = ["-y", "@mnemosyne_os/mcp"]{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@mnemosyne_os/mcp"
]
}
}
}{
"servers": {
"mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mnemosyne_os/mcp"
]
}
}
}Optional settings from the registry entry, left out of the block above:
MNEMO_DEFAULT_VAULT (Vault used when a call does not name one. The vaults are the user's own domains of memory (code, notes, journal); nothing outside the granted list is reachable), MNEMO_VAULTS (Comma-separated list of vaults this server may reach. Narrow it: a vault left out here cannot be read even by mistake), MNEMO_SDK_PORT (Port of the local Mnemosyne OS SDK server the desktop app listens on).
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Mnemosyne OS — questions
Answers built from our own checks of this server.