Opper for ChatGPT

ai.opper/opper

EU AI gateway: search 700+ models, create projects and API keys, manage rules, usage and traces.

client:ChatGPT transport:streamable-http

Install Opper in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.opper.ai/mcp

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