Sms Assist Webhooks

generated: '2026-07-21'
method: searched
source: https://developers.lessen.com/docs/#/client/guides/webhook/webhooks-events-v2
spec_type: Webhooks
description: >-
  Lessen One Platform webhook event catalog (v2.0, in active development).
  Webhooks are configured per account in the Developer Portal with a required
  endpoint, Application Id, and Secret (HMAC signing key); JWT Bearer auth and
  custom headers are supported. Deliveries include retry/staleness headers
  `X-Lessen-IsRetry` and `X-Lessen-Triggered-At`. Event schemas are additive and
  forward-compatible — consumers must ignore unknown fields. Topic IDs below are
  captured verbatim from the dated release notes; the live topics page is the
  source of truth.
delivery:
  transport: http-webhook
  auth: [hmac-secret, jwt-bearer]
  signing: Application Id + Secret (encryption key)
  headers:
    X-Lessen-IsRetry: Set when the delivery is a retry.
    X-Lessen-Triggered-At: Original trigger timestamp for stale-request detection.
subjects:
- surface: client
  domain: Communication
  events:
  - {topic_id: 25, name: Send to Client}
  - {topic_id: 26, name: Send from resident}
- surface: client
  domain: Service Request
  events:
  - {topic_id: 74, name: Status Updated}
  - {topic_id: 90, name: Service Request Work Order Created}
- surface: client
  domain: Label
  events:
  - {topic_id: 80, name: Label Added}
  - {topic_id: 81, name: Label Deleted}
- surface: client
  domain: Recurrent Work Order
  events:
  - {topic_id: 300, name: Created}
  - {topic_id: 302, name: Status Changed}
  - {topic_id: 303, name: Schedule Changed}
  - {topic_id: 304, name: Service Combination Updated}
  - {topic_id: 305, name: Check-In/Out Time Changed}
- surface: client
  domain: Turn & Reno Project
  events:
  - {topic_id: 202, name: Project Status Updated}
  - {topic_id: 400, name: Project Comment Created}
  - {topic_id: 450, name: Project Message Created}
- surface: client
  domain: Reactive Work Order (v1 topics)
  events:
  - {name: Attachment Created}
  - {name: Rating Created}
  - {name: Rating Updated}
  - {name: Service Combination Updated}
  - {name: CheckInOutTime Changed}
- surface: vendor
  domain: Communication
  events:
  - {topic_id: 1, name: New Message}
- surface: vendor
  domain: Reactive Work Order
  events:
  - {topic_id: 114, name: Asset Added}
  - {topic_id: 115, name: Asset Removed}