Using WebLN to pay Sats to access OpenAIChat LLM model and ask questions.
Preimages are checked via Python/SQL for evidence of repeated use, returning a 409 error if that exact preimage exists in the database.
The core concept was to demonstrate a Python back end using LangChain/Lanarky and FastAPI with Nginx and a LinuxVPS.
Vanilla JavaScript is used to access the endpoint.