Iii Getting Started

Getting Started with iii

iii replaces your API framework, task queue, cron scheduler, pub/sub, state store, and observability pipeline with a single engine and three primitives: Worker, Function, Observer. Workers host functions, any worker runs a function with call, and iii.observe(a, b) means "when a runs, b runs".

Step 1: Install the Engine

curl -fsSL https://install.iii.dev/iii/main/install.sh | sh

Verify it installed:

iii --version

Step 2: Create a Project

iii project init my-app              # barebones project
iii project init my-app -t harness   # or: the harness template (agent + console UI)
cd my-app

iii project init --learn-iii scaffolds the harness template and starts it in one step; the installer offers the same when you answer "y" at its prompt. iii project init --template quickstart scaffolds the Quickstart with a Python and a TypeScript worker.

Step 3: Start the Project

iii compose --namespace dev --up --file worker-compose.yaml