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Knowledge Graph RDBMS

io.github.cunicopia-dev/knowledge-graph-rdbms · v0.1.9

A label property graph on SQLite/Postgres with multi-ontology routing and a gated MCP server.

Connect Runs on your machine

Terminal
claude mcp add knowledge-graph-rdbms -e KGRDBMS_HOME=<KGRDBMS_HOME> -e KGRDBMS_DEFAULT_ONTOLOGY=<KGRDBMS_DEFAULT_ONTOLOGY> -- uvx knowledge-graph-rdbms==0.1.9
claude_desktop_config.json
{
  "mcpServers": {
    "knowledge-graph-rdbms": {
      "command": "uvx",
      "args": [
        "knowledge-graph-rdbms==0.1.9"
      ],
      "env": {
        "KGRDBMS_HOME": "<KGRDBMS_HOME>",
        "KGRDBMS_DEFAULT_ONTOLOGY": "<KGRDBMS_DEFAULT_ONTOLOGY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "knowledge-graph-rdbms": {
      "command": "uvx",
      "args": [
        "knowledge-graph-rdbms==0.1.9"
      ],
      "env": {
        "KGRDBMS_HOME": "<KGRDBMS_HOME>",
        "KGRDBMS_DEFAULT_ONTOLOGY": "<KGRDBMS_DEFAULT_ONTOLOGY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "knowledge-graph-rdbms": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "knowledge-graph-rdbms==0.1.9"
      ],
      "env": {
        "KGRDBMS_HOME": "<KGRDBMS_HOME>",
        "KGRDBMS_DEFAULT_ONTOLOGY": "<KGRDBMS_DEFAULT_ONTOLOGY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
KGRDBMS_HOME
Optional
Storage root for ontology databases and the event log. Defaults to ~/.kgrdbms.
KGRDBMS_DEFAULT_ONTOLOGY
Optional
Name of the default ontology used when a tool call omits the `ontology` argument. Defaults to "default".

Details

Package[email protected] (PYPI, stdio)
First published25 Jun 2026
Last updated25 Jun 2026
Registry nameio.github.cunicopia-dev/knowledge-graph-rdbms

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