Runtime — Loop Engine

The Loop Engine is the runtime technology that powers Boss Loops (both Cloud and OSS). It is a package ecosystem (@loop-engine/*), not a separate product brand.

Product vs technology (BL-DOC-07). This section is Loop Engine technology documentation. For the Boss Loops OSS product (installation, self-hosting, deployment), see Boss Loops OSS.

A loop is a finite state machine with governed transitions — every transition names an actor, evaluates guards, attaches evidence, and emits an audit event. See Loops for the conceptual model.

In this section

• Runtime architecture — execution model and lifecycle.
• State-machine model — concerns, transitions, and runs.
• Actor framework — human / automation / ai-agent attribution.
• Package APIs — @loop-engine/* (e.g. @loop-engine/sdk).

Technology content is reconciled into these pages from loopengine/loop-engine, docs-site, and package READMEs in a later pass; sources preserved until then (CC-DOC-01).