ChatGPT

reference data for ChatGPT

dev.euroref/reference-data

European govt data, cited: rates, VAT, tax, wages, holidays, FX. 35 countries; Germany free.

client:ChatGPT transport:streamable-http tools:11

Install reference data in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://euroref.dev/mcp

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

What ChatGPT can do once it is connected

reference data in other clients

reference data MCP server