otwarteAPI.pl for ChatGPT

io.github.bartosz-kuc/otwarteapi

Official public & government APIs, dozens of countries: registers, statistics, open data. Keyless.

client:ChatGPT transport:streamable-http tools:1

Install otwarteAPI.pl in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://otwarteapi.pl/mcp

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