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Loop Engine^™

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GitHub npm Examples Changelog

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Getting Started

Quick Start Installation Your First Loop Architecture

Core Concepts

What is a Loop?The Actor Model Guards and Policy Signals Observability Learning Signals AI as Actor Confidence + Evidence Human Approval Gates Decision Governance Loop Engine vs Workflow Engines Agents and RAG When to Use Loop Engine

Defining Loops

YAML Format TypeScript Builder Loop Library Guards Reference

Running Loops

createLoopSystem Starting Loops Transitions Event Subscriptions Adapters

Packages

Registry

Examples

Overview Expense Approval AI Replenishment Demand Signal Postgres Persistence Event Streaming Infrastructure Change Approval Fraud Review OpenClaw Integration Commerce Gateway

Integrations

⟩ AI Providers

Anthropic / Claude OpenAI Grok (xAI)Google Gemini Perplexity Sonar

⟩ Agentic Platforms

OpenClaw Vercel AI SDK

⟩ Storage Adapters

Postgres Kafka HTTP

⟩ Observability

PagerDuty Governed incident (Perplexity + PD)

⟩ Commerce

Commerce Gateway

Governance

License Contributing RFC Process Changelog

Project

PreviousChangelog

Changelog · Loop Engine

Project

Changelog

All notable changes to Loop Engine will be documented here.

Format: Keep a Changelog
Versioning: Semantic Versioning

Unreleased

Added

@loop-engine/adapter-perplexity — Perplexity Sonar LLMAdapter with citations, retries, and guardEvidence integration
@loop-engine/core — LLMAdapter, AdapterInput / AdapterOutput, and deep guardEvidence() for adapter audit redaction
Docs: docs/integrations-perplexity.md (Sonar vs Perplexity Computer skills)
Release contract stub: .rc/adapter-perplexity.json (RC DRAFT until promoted LOCKED)

0.1.5 — 2026-03-14

Fixed

Replaced workspace:* references with explicit version pins for npm compatibility
Fixed stale dependency pins in published tarballs
Clean build verified — npm install @loop-engine/sdk works correctly

0.1.3 — 2026-03-14

Added

repository field added to all 23 published @loop-engine/* package manifests, including correct directory mapping for packages/* and packages/adapters/*

Changed

Version bumped from 0.1.2 to 0.1.3 across all @loop-engine/* packages

0.1.2 — 2026-03-13

Added

Keywords added to all 22 package.json files for npm discoverability
README.md added to all packages
LICENSE file added to all packages (Apache-2.0)

Fixed

Correct Apache-2.0 license field across all packages

0.1.1 — 2026-03-13

Added

LICENSE file included in published npm tarballs
README.md included in published npm tarballs
@loop-engine/adapter-grok — Grok (xAI) AI actor adapter
@loop-engine/adapter-gemini — Google Gemini AI actor adapter

On this page

Unreleased Added [0.1.5] — 2026-03-14 Fixed [0.1.3] — 2026-03-14 Added Changed [0.1.2] — 2026-03-13 Added Fixed [0.1.1] — 2026-03-13 Added [0.1.0] — 2026-03-12 Added

ActorDecisionError with typed error codes (INVALID_SIGNAL, INVALID_CONFIDENCE, PARSE_FAILED, API_ERROR) in @loop-engine/actors

0.1.0 — 2026-03-12

Added

Initial public release of all 20 @loop-engine/* packages
@loop-engine/core — branded ID types and Zod schemas
@loop-engine/dsl — YAML loop definition parser and validator
@loop-engine/events — typed event definitions and factories
@loop-engine/signals — learning signal schema and extraction
@loop-engine/actors — actor types and authorization logic
@loop-engine/guards — guard evaluation pipeline and built-in guards
@loop-engine/runtime — loop lifecycle and transition execution
@loop-engine/observability — timeline reconstruction and replay
@loop-engine/registry-client — loop registry client
@loop-engine/sdk — main developer SDK (recommended entry point)
@loop-engine/ui-devtools — React developer tools
@loop-engine/adapter-memory — in-memory storage adapter
@loop-engine/adapter-postgres — PostgreSQL storage adapter
@loop-engine/adapter-kafka — Kafka event streaming adapter
@loop-engine/adapter-http — generic HTTP storage adapter
@loop-engine/adapter-anthropic — Anthropic Claude AI actor adapter
@loop-engine/adapter-openai — OpenAI AI actor adapter
@loop-engine/adapter-openclaw — OpenClaw integration adapter
@loop-engine/adapter-commerce-gateway — Commerce Gateway adapter
@loop-engine/adapter-pagerduty — PagerDuty incident adapter
@loop-engine/adapter-vercel-ai — Vercel AI SDK adapter
Apache-2.0 license
Full test suite across all packages