GreatWait enables the scheduling of both one-time and recurring HTTPS callbacks for applications and AI agents. Users can create and oversee their schedules via an API, command line interface, remote MCP server, or an online dashboard. It also allows for reviewing delivery logs, retrying unsuccessful deliveries, and managing schedule states such as canceling, pausing, or resuming. The platform facilitates controlled bulk operations to efficiently handle multiple schedules, while predictions of upcoming deliveries assist in effective capacity planning. The pricing model is based on usage, charging $1 for every 100,000 delivery attempts, including retries, with a minimum prepaid fee of $10. New users are welcomed with a trial credit of $1, which is valid for a period of 14 days. This service is tailored for technical teams that require reliable scheduled delivery to external HTTPS endpoints, ensuring they have the tools necessary for smooth operations.