Mavrck Webhooks

asyncapi: 2.6.0
info:
  title: Mavrck Webhooks
  version: 1.0.0
  description: |
    AsyncAPI description of the Mavrck (Later Influence) outbound webhook
    surface, derived faithfully from the provider's own published contract:
    "Workflow Stage Change Event Webhook" 1.0.0, an OpenAPI 3.0.0 document
    published on SwaggerHub by owner `mavrck` and saved verbatim in this repo at
    webhooks/mavrck-workflow-stage-change-event-webhook-openapi.json.

    Mavrck POSTs a JSON notification to an HTTPS endpoint the subscriber
    registers in the platform, whenever an influencer is added to one of the
    subscriber's campaigns, or moves from one of that campaign's workflow stages
    to another.

    Authorization is a shared bearer-style `token` carried IN THE BODY of the
    notification: a 16-character alphanumeric string the subscriber reads from
    the Mavrck platform and compares on receipt. There is no HMAC signature
    header, no timestamp, and no replay window — the subscriber's only
    verification material is a static secret transmitted in the payload of every
    delivery.

    Retry contract, stated by the provider in the response descriptions of the
    source document: Mavrck retries on 500 and 502. Mavrck does NOT retry on
    401, 403, 404 or 405. A 200 is treated as successful delivery.

    Only ONE event type is published. This document does not invent others.
  contact:
    name: Later Influence Help Center
    url: https://help-influence.later.com/hc/en-us
  termsOfService: https://later.com/terms/
  x-generated: '2026-08-12'
  x-method: derived
  x-source: webhooks/mavrck-workflow-stage-change-event-webhook-openapi.json
  x-upstream: https://api.swaggerhub.com/apis/mavrck/workflow-stage-change-event-webhook/1.0.0
defaultContentType: application/json
servers:
  subscriber:
    url: '{subscriberUrl}'
    protocol: https
    description: >-
      The HTTPS endpoint the subscriber registers in the Mavrck platform. Mavrck
      POSTs each notification to it. The source document uses
      https://www.example.com/example-path as a placeholder because the real URL
      is supplied per subscriber.
    variables:
      subscriberUrl:
        description: The subscriber's own HTTPS receiver URL.
        default: https://www.example.com/example-path
channels:
  workflow/stage-change:
    description: >-
      Notifies a subscriber when influencers are added to one of their campaigns
      or moved from one of their campaign's workflow stages to another.
    publish:
      operationId: onWorkflowStageChange
      summary: Receive a workflow stage change notification from Mavrck.
      bindings:
        http:
          type: request
          method: POST
      message:
        $ref: '#/components/messages/WorkflowStageChangeNotification'
components:
  messages:
    WorkflowStageChangeNotification:
      name: WorkflowStageChangeNotification
      title: Workflow Stage Change Event
      contentType: application/json
      payload:
        $ref: '#/components/schemas/WorkflowStageChangeNotification'
  schemas:
    WorkflowStageChangeNotification:
      type: object
      properties:
        event:
          $ref: '#/components/schemas/WorkflowStageChangeEvent'
        subscriberId:
          type: string
          description: >-
            Unique ID of the subscriber's webhook. If the receiving endpoint
            takes multiple instances' events, or multiple applications receive
            the same instance's events, this value varies.
        token:
          type: string
          description: >-
            A 16-character alphanumeric string used to authorize requests to the
            subscriber's application. The subscriber's token is accessible in
            the Mavrck platform.
    WorkflowStageChangeEvent:
      type: object
      description: Details of the workflow stage change.
      properties:
        campaign:
          $ref: '#/components/schemas/Campaign'
        current:
          $ref: '#/components/schemas/WorkflowStage'
        influencer:
          $ref: '#/components/schemas/Influencer'
        previous:
          description: >-
            The stage the influencer moved from. Null when the influencer was
            newly added to the campaign rather than moved.
          oneOf:
          - $ref: '#/components/schemas/WorkflowStage'
          - type: 'null'
    Campaign:
      type: object
      description: Details of the campaign in which the workflow stage change occurred.
      properties:
        id:
          type: integer
          description: Unique ID of the campaign in which the workflow stage change occurred.
        instanceId:
          type: integer
          description: Unique ID of the instance to which the campaign belongs.
    Influencer:
      type: object
      description: Details of the influencer whose workflow stage changed.
      properties:
        id:
          type: integer
          description: Unique ID of the influencer whose workflow stage changed.
        membershipId:
          type: [integer, 'null']
          description: Unique ID of the relationship between the influencer and your instance.
    WorkflowStage:
      type: object
      description: >-
        A point in a campaign denoting an influencer's progress towards campaign
        completion.
      properties:
        label:
          type: string
          description: Unique, MUTABLE id of a workflow stage — do not key on it.
        slug:
          type: string
          description: Unique, IMMUTABLE id of a workflow stage in a campaign — key on this.