Signals and routes

Model events as typed signals and connect them to streams with explicit, testable routing rules.

Arc Runtime 3.xUpdated Jul 18, 2026

Signals

A signal combines a stable event name with a versioned payload schema. Producers may only publish versions registered in the workspace.

arcwell.routes.yml

routes:
  - match: "order.accepted"
    when: "payload.region == 'north'"
    deliver: "northline-fulfillment"

shell

arcctl routes test fixtures/order-accepted.json

Route tests print every matched stream and the expression that produced the match.

On this page