Korea Invoices (POPBiLL 전자세금계산서 issue, query & NTS transmit) for ChatGPT

app.wishpool/korea-invoice-mcp

Korea POPBiLL e-tax-invoice: AI agents issue, query & transmit e-invoices, stateless BYO.

client:ChatGPT transport:streamable-http

Install Korea Invoices (POPBiLL 전자세금계산서 issue, query & NTS transmit) in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://inv-kr.wishpool.app/mcp

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