"An open-source relational database management system" matching MCP connectors:

Simulate electric UAV powertrains and search a public motor, propeller and battery database.

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/JPL Solar System Dynamics + CNEOS MCP.

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

Live aircraft near an area