N8M API integration HTTP Node

I seek expertise in crafting a proof of concept integrating an AI chatbot, payment gateway API, and N8M platform. The bot should converse with end-users to securely obtain payment fields like names and amounts. Those variables require parsing and storage within customizable N8M fields. An HTTP POST request must transmit that parsed data to the payment provider. Further, webhooks from the gateway need routing back to the bot to operate based on transaction responses. Skill in REST APIs, N8M, AI services and capturing/parsing payment info would prove invaluable in designing a flexible architecture allowing this chatbot and external services to seamlessly transact. Samples demonstrating experience with similar integrations and automated workflows are appreciated.