Knowledge Graph RDBMS runs on your own machine — the client starts it, so there is no endpoint to ping. 116 installs a week from pypi. Last commit 27 Jun 2026.
A label property graph on SQLite/Postgres with multi-ontology routing and a gated MCP server.
Today is the operative word: we check Knowledge Graph RDBMS 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 knowledge-graph-rdbms -- uvx knowledge-graph-rdbms
{
"mcpServers": {
"knowledge-graph-rdbms": {
"args": [
"knowledge-graph-rdbms"
],
"command": "uvx"
}
}
}
[mcp_servers.knowledge-graph-rdbms]
command = "uvx"
args = ["knowledge-graph-rdbms"]
{
"mcpServers": {
"knowledge-graph-rdbms": {
"args": [
"knowledge-graph-rdbms"
],
"command": "uvx"
}
}
}
{
"mcpServers": {
"knowledge-graph-rdbms": {
"args": [
"knowledge-graph-rdbms"
],
"command": "uvx"
}
}
}
This one needs environment variables set before it will start:
KGRDBMS_HOME (Storage root for ontology databases and the event log. Defaults to ~/.kgrdbms.), KGRDBMS_DEFAULT_ONTOLOGY (Name of the default ontology used when a tool call omits the `ontology` argument. Defaults to "default".).
The author declared them in the registry entry; get the values from the project itself.
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