Knowledge Graph RDBMS MCP server

by cunicopia-dev·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.

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If you have run it, two minutes of your experience saves the next person an afternoon.

No tool declarations could be read from the package source. They show once the server is installed.

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claude mcp add knowledge-graph-rdbms -- uvx knowledge-graph-rdbms

Is Knowledge Graph RDBMS MCP server safe?: Not known yet: the safety scan has not run. New listings are scanned within a few days.
How do I install Knowledge Graph RDBMS?: It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.
Does Knowledge Graph RDBMS need an API key?: No secret keys are declared. It reads 2 settings from the environment.
Is Knowledge Graph RDBMS maintained?: The latest release is v0.1.9.
What can I use instead of Knowledge Graph RDBMS?: Servers from other publishers that do the same job: Engraphy MCP server, Facthouse MCP server and Echo Memory MCP server. Compare all Knowledge Graph RDBMS alternatives.

Same job from other publishers: the closest match first, then the best rated.

Engraphy
Self-hosted MCP memory server: a typed knowledge graph on Postgres 16 and pgvector.
not reviewed
New
B
Facthouse
Local AI memory: neuroscience-inspired Data→Information→Knowledge in SQLite you own.
not reviewed
Growing
B
Echo Memory
Shared memory for AI agents, as a graph in your own Postgres. Writes never call an LLM.
not reviewed
Growing
A
DBHub
Token-efficient database MCP server for PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, SQLite
not reviewed
Widely used
A
Neon
Official Neon MCP server for managing Neon projects and Lakebase Postgres databases.
not reviewed
Established
A

Local package. It runs on your machine, not through the gateway.

KGRDBMS_HOMEStorage root for ontology databases and the event log. Defaults to ~/.kgrdbms.
KGRDBMS_DEFAULT_ONTOLOGYName of the default ontology used when a tool call omits the `ontology` argument. Defaults to "default".

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