Actor
Also: Apify Actor
A packaged, runnable program on the Apify platform that takes a JSON input, does work on the web, and writes structured results to a dataset.
An Actor is closer to a serverless function than to a script: it declares its input schema, its storage and its resource limits, and the platform handles running, scheduling and billing it. That declaration is what makes an Actor documentable and what lets a marketplace price it per result.