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Topic: backend

80 skills in this topic.

iii-python-sdk Python SDK for the iii engine. Use when building workers, registering functions, or invoking triggers in Python.
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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.
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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.
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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.
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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.
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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.
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iii-reactive-backend Builds reactive real-time backends on the iii engine. Use when building event-driven apps where state changes automatically trigger side effects, clients receive live updates via streams or websockets, or you need a real-time database layer with pub/sub and CRUD endpoints.
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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.
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iii-realtime-streams Pushes live updates to connected WebSocket clients via streams. Use when building real-time dashboards, live feeds, or collaborative features.
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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.
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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.
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iii-browser-sdk Browser SDK for connecting to the iii engine from web applications via WebSocket. Use when building browser-based clients that register functions, invoke triggers, or consume streams from the frontend.
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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.
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iii-node-sdk Node.js/TypeScript SDK for the iii engine. Use when building workers, registering functions, or invoking triggers in TypeScript or JavaScript.
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iii-state-reactions Registers state-type triggers that automatically fire functions when key-value state is created, updated, or deleted within a scope. Use when building reactive side effects, change watchers, audit logs, cache invalidation, notification dispatchers, or any observer pattern where data changes should trigger downstream processing.
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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.
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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.
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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.
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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.
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iii-rust-sdk Rust SDK for the iii engine. Use when building high-performance workers, registering functions, or invoking triggers in Rust.
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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.
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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.
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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, health checks, batch processing, or any task that should run every N seconds, minutes, hours, or on a weekly/monthly calendar.
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iii-trigger-actions Selects how functions are invoked — synchronous calls that return results, fire-and-forget void dispatches, or durable enqueue through named queues with retries. Use when deciding between blocking RPC calls, background job dispatch, async workers, or reliable message delivery with acknowledgement.
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