iii

iii-http-endpoints

Exposes iii functions as REST API endpoints. Use when building HTTP APIs, webhooks, or inbound request handling where iii owns the route.

iii-agentic-backend

Creates and orchestrates multi-agent pipelines on the iii engine. Use when building AI agent collaboration, agent orchestration, research/review/synthesis chains, or any system where specialized agents hand off work through queues and shared state.

iii-trigger-conditions

Registers a boolean condition function and attaches it to triggers via condition_function_id so handlers only fire when the condition passes. Use when gating triggers on business rules, checking user permissions, validating data before processing, filtering high-value orders, rate-limiting events, or conditionally skipping handlers based on payload content.

iii-getting-started

Install the iii engine, set up your first worker, and get a working backend running. Use when a user wants to start a new iii project, install the SDK, or needs help with initial setup and configuration.

iii-http-middleware

Registers engine-level middleware functions that run before HTTP handlers. Use when adding authentication, request logging, rate limiting, or any pre-handler logic to HTTP endpoints.

iii-low-code-automation

Builds trigger-transform-action automation chains on the iii engine. Use when building Zapier/n8n-style automations, webhook-to-action pipelines, or simple event-driven chains where each node is a small registered function chained via named queues.

iii-rust-sdk

Rust SDK for the iii engine. Use when building high-performance workers, registering functions, or invoking triggers in Rust.

iii-queue-processing

Uses `TriggerAction.Enqueue({ queue })` and named queues for reliable background work. Use when a request should hand off slow work and return quickly, a task must retry on failure, jobs need concurrency limits or FIFO ordering, or a workflow needs durable async processing, backoff, and dead-letter handling.

iii-trigger-actions

Selects how functions are invoked: synchronous result-returning calls, fire-and-forget void dispatches, or durable `TriggerAction.Enqueue({ queue })` background jobs. Use whenever a handler should not block the caller, work should run later or reliably with retries, a request should return quickly, or an agent must choose between inline RPC, optional side effects, and queued async processing.

iii-dead-letter-queues

Inspects and redrives jobs that exhausted all retries. Use when handling failed queue jobs, debugging processing errors, or implementing retry strategies.

iii-engine-config

Configures the iii engine via iii-config.yaml — workers, adapters, queue configs, ports, and environment variables. Use when deploying, tuning, or customizing the engine.

iii-functions-and-triggers

Registers functions and triggers on the iii engine across TypeScript, Python, and Rust. Use when creating workers, registering function handlers, binding triggers, or invoking functions across languages.

iii-event-driven-cqrs

Implements CQRS with event sourcing on the iii engine. Use when building command/query separation, event-sourced systems, or fan-out architectures where commands publish domain events and multiple read model projections subscribe independently.

iii-node-sdk

Node.js/TypeScript SDK for the iii engine. Use when building workers, registering functions, or invoking triggers in TypeScript or JavaScript.

iii-python-sdk

Python SDK for the iii engine. Use when building workers, registering functions, or invoking triggers in Python.

iii-reactive-backend

Builds reactive real-time backends where functions react automatically to state changes and stream events. Use when requirements say "after create/update do this", "keep views/metrics/cache in sync", "notify clients when data changes", "push live updates", or "avoid polling"; combine state triggers, stream updates, pub/sub, and queued work instead of imperative follow-up calls.

iii-workflow-orchestration

Orchestrates durable multi-step workflow pipelines on the iii engine. Use when building order fulfillment, data pipelines, task orchestration, or any sequential process requiring retries, backoff, step tracking, scheduled cleanup, or dead letter queue (DLQ) handling.

iii-custom-triggers

Builds custom trigger types for events iii does not handle natively. Use when integrating webhooks, file watchers, IoT devices, database CDC, or any external event source.

iii-observability

Integrates OpenTelemetry tracing, metrics, and logging into iii workers. Use when setting up distributed tracing, Prometheus metrics, custom spans, or connecting to observability backends.

iii-http-invoked-functions

Registers external HTTP endpoints as iii functions using registerFunction(id, HttpInvocationConfig). Use when adapting legacy APIs, third-party webhooks, or immutable services into triggerable iii functions, especially when prompts ask for endpoint maps like { path, id } iterated into registerFunction calls.

iii-effect-system

Builds composable, pipeable function chains on the iii engine. Use when building functional pipelines, effect systems, or typed composition layers where each step is a pure function with distributed tracing.

iii-state-reactions

Registers reactive state triggers that automatically fire functions when key-value state is created, updated, or deleted. Use whenever a requirement says "when X changes, do Y", "after a record is created/updated/deleted", keep derived data in sync, notify users, invalidate caches, write audit logs, or run downstream work from data changes without polling or explicit calls.

iii-state-management

Creates scoped key-value stores, reads and writes state entries, lists keys, and performs partial updates across functions. Use when persisting data between invocations, managing user sessions, caching computed values, storing feature flags, sharing state between workers, or building a KV data layer as an alternative to Redis or DynamoDB.

iii-channels

Binary streaming between workers via channels. Use when building data pipelines, file transfers, streaming responses, or any pattern requiring binary data transfer between functions.

iii-cron-scheduling

Registers cron triggers with 7-field expressions to run functions on recurring schedules. Use when scheduling periodic jobs, timed automation, crontab replacements, cleanup routines, report generation, batch processing, or calendar-based work that is genuinely time-driven.