iii-sdk 0.12.0.dev1

III SDK for Python

iii-sdk

Python SDK for the iii engine.

Install

pip install iii-sdk

Hello World

from iii import register_worker

iii = register_worker("ws://localhost:49134")

def greet(data):
    return {"message": f"Hello, {data['name']}!"}

iii.register_function({"id": "greet"}, greet)

iii.register_trigger({
    "type": "http",
    "function_id": "greet",
    "config": {"api_path": "/greet", "http_method": "POST"},
})

iii.connect()

result = iii.trigger({"function_id": "greet", "payload": {"name": "world"}})
print(result)  # {"message": "Hello, world!"}

API

Operation	Signature	Description
Initialize	register_worker(url, options?)	Create an SDK instance and auto-connect
Register function	iii.register_function({"id": id}, handler)	Register a function that can be invoked by name
Register trigger	iii.register_trigger({"type": ..., "function_id": ..., "config": ...})	Bind a trigger (HTTP, cron, queue, etc.) to a function
Invoke (await result)	iii.trigger({"function_id": id, "payload": data})	Invoke a function and wait for the result
Invoke (fire-and-forget)	iii.trigger({"function_id": id, ..., "action": TriggerAction.Void()})	Fire-and-forget
Shutdown	iii.shutdown()	Disconnect and stop background thread

register_worker() creates the SDK instance and auto-connects to the engine.

Registering Functions

def create_order(data):
    return {"status_code": 201, "body": {"id": "123", "item": data["body"]["item"]}}

iii.register_function({"id": "orders.create"}, create_order)

Registering Triggers

iii.register_trigger({
    "type": "http",
    "function_id": "orders.create",
    "config": {"api_path": "/orders", "http_method": "POST"},
})

Invoking Functions

result = iii.trigger({"function_id": "orders.create", "payload": {"body": {"item": "widget"}}})

Modules

Import	What it provides
iii	Core SDK (III, types)
iii.stream	Stream client for real-time state
iii.telemetry	OpenTelemetry integration

Development

Install in development mode

pip install -e .

Type checking

mypy src

Linting

ruff check src

Resources

• Documentation
• iii Engine
• Examples