Kiosk

Kiosk is an open protocol and reference implementation that enables personal AI assistants to interact with online services as first-class users. Assistants can discover services, create accounts without email or password, read offerings, book, order, pay, and receive notifications. Built as an Apache 2.0 self-hosted Ruby on Rails implementation, it uses OAuth standards (RFC 7591, 7523, 9449) for secure key-based authentication and optional proof-of-work tolling to prevent abuse.

Designed for builders integrating AI assistants into their services, Kiosk works across any transaction type—grocery orders, hotel bookings, classified ads, or shared to-do lists. The protocol is service-agnostic and requires no pre-approval deals or allowlists. Services implement standard discovery files and OAuth endpoints; assistants register with unique keys per service, ensuring privacy and preventing cross-service tracking.