"Information about MariaDB, an open-source relational database" matching MCP connectors:

ECAC PER: DCOMP, official-source lookup. Platform-hosted, pay per query with prepaid credit.

Aviation identity resolution and an AI use-case atlas, with provenance and temporal validity

Open Notify MCP — ISS position + people in space

NASA MCP — wraps NASA Open APIs (api.nasa.gov)

Live aircraft near an area