Core Primitives

iii has three top-level primitives:

Function

a named unit of work such as

orders::validate

Trigger

an event source bound to a function

Worker

a process that connects to the engine and executes functions Use :: in function IDs, leading slashes in HTTP api_path , and expression for cron config. Function Registration Register local handlers when you control the implementation. Register HTTP-invoked functions when iii should call an existing external endpoint. Show more Installs 746 Repository iii-hq/iii GitHub Stars 18.5K First Seen May 27, 2026 Security Audits Gen Agent Trust Hub Pass Socket Warn Snyk Warn