BillDog for ChatGPT

io.github.billdogai/billdog-mcp

Set up paywalls, subscriptions, A/B tests, feature flags and analytics for your app from your agent.

client:ChatGPT transport:streamable-http

Install BillDog in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.billdog.io/mcp

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