Marmot Data Catalog for ChatGPT

io.github.marmotdata/marmot

Open-source data catalog. Search assets, explore lineage, and find ownership.

client:ChatGPT transport:streamable-http

Install Marmot Data Catalog in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://{marmot_host}/api/v1/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs