GCC e-Invoice Preflight Oracle for ChatGPT

tech.noahsarch/einvoice-preflight

Validate UAE PINT AE and Saudi ZATCA e-invoices: UBL, official Schematron, QR, fix hints.

client:ChatGPT transport:streamable-http tools:7

Install GCC e-Invoice Preflight Oracle in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://einvoice.noahsarch.tech/mcp

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