Bankday for ChatGPT

io.github.parsingmainframe/bankday

Business days, holidays and settlement dates for ACH, TARGET2, Bacs, 28 exchanges and 247 countries

client:ChatGPT transport:streamable-http tools:8

Install Bankday in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://bankday.jacklehoff4866.workers.dev/mcp

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