Ratary Memory MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 33 installs a week from npm. Last commit 10 Aug 2026.
Persistent coding memory for AI assistants. MCP stdio, hybrid search, graph, context.
Today is the operative word: we check Ratary Memory MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
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 ratary -e 'RATARY_API_KEY=<RATARY_API_KEY>' -- npx -y @ratary/mcp-server
{
"mcpServers": {
"ratary": {
"command": "npx",
"args": [
"-y",
"@ratary/mcp-server"
],
"env": {
"RATARY_API_KEY": "<RATARY_API_KEY>"
}
}
}
}
[mcp_servers.ratary]
command = "npx"
args = ["-y", "@ratary/mcp-server"]
env = { RATARY_API_KEY = "<RATARY_API_KEY>" }
{
"mcpServers": {
"ratary": {
"command": "npx",
"args": [
"-y",
"@ratary/mcp-server"
],
"env": {
"RATARY_API_KEY": "<RATARY_API_KEY>"
}
}
}
}
{
"servers": {
"ratary": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@ratary/mcp-server"
],
"env": {
"RATARY_API_KEY": "<RATARY_API_KEY>"
}
}
}
}
Put your own value in place of
<RATARY_API_KEY> (Ratary API key (aic_...)).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
RATARY_BASE_URL (Ratary REST base URL (default https://ratary.ontorata.com)).
Persistent memory for AI coding agents. Hybrid search, auto-session capture, context routing.
Persistent memory, hybrid search and a goal graph for AI agents, over stdio or remote HTTP.
Persistent memory and knowledge graph for AI assistants — keyword + vector + graph search.
Persistent knowledge memory for AI agents. Hybrid search, code graph, pgvector.
Persistent memory and knowledge graphs for AI agents. Hybrid search, context checkpoints, and more.
Self-hosted persistent memory for AI agents: knowledge graph and hybrid search.
Local-first persistent context memory MCP server for AI coding agents.
Cognitive memory for AI coding assistants — persistent memory across sessions
Answers built from our own checks of this server.