generated: '2026-08-26'
method: searched
source: https://developer.upsun.com/docs/integrations/activity/webhooks.md and https://developer.upsun.com/docs/integrations/activity.md,
  fetched 2026-08-26
asyncapi_published: false
asyncapi_note: No AsyncAPI document is published for the event surface. The webhook catalog below is captured
  from the provider documentation instead; nothing here is fabricated.
transport: HTTP POST to a subscriber-supplied URL
registration:
  mechanism: integration of type webhook
  cli: upsun integration:add --type=webhook --url=<URL_TO_RECEIVE_JSON>
  api: POST /projects/{projectId}/integrations (operationId create-projects-integrations)
  filtering: The integration can be limited to specific activity types, activity states and branches; the default
    is every event on every environment in the project.
payload:
  format: JSON
  note: 'The webhook receives the same payload as an activity script: complete information about the entire state
    of the project at the time of the activity.'
  schema_hint: components.schemas.Activity in openapi/platform.sh-rest-api-openapi.json
security:
  signing: true
  header: X-JWS-Signature
  standard: JWS (RFC 7515) with detached unencoded payload (RFC 7797)
  algorithm: HS256 (HMAC-SHA256 with a shared key)
  protected_header: '{"alg":"HS256","b64":false,"crit":["b64"]}'
  format: <base64url-encoded-header>..<base64url-encoded-signature> — two dots with an empty payload slot
  configuration: upsun integration:add --type=webhook --url=<URL> --shared-key=<SECRET_KEY>
  docs: https://developer.upsun.com/docs/integrations/activity/webhooks.md#authentication
events:
- name: environment.activate
  description: An environment was activated.
  source: docs example
- name: environment.deactivate
  description: An environment was deactivated.
  source: docs example
- name: environment.synchronize
  description: An environment was synchronized from its parent.
  source: docs example
- name: environment.backup
  description: An environment backup was taken.
  source: docs example
- name: environment.push
  description: Default trigger — fires after a successful git push.
  source: docs prose ("By default, it will activate only after a successful git push operation")
  confidence: medium
events_note: The provider documentation does not publish a complete enumerated event catalog; the entries above
  are the activity types named verbatim in the docs. The full set is discoverable at runtime from the `type` field
  of the Activity resource.
activity_states:
- pending
- scheduled
- staged
- in_progress
- complete
- cancelled
activity_results:
- success
- failure
related_channels:
- name: Activity scripts
  description: Provider-hosted JavaScript triggered by the same events.
  docs: https://developer.upsun.com/docs/integrations/activity.md
- name: Health notifications
  description: Disk-space and inode threshold alerts routed to email, Slack, PagerDuty or a webhook.
  docs: https://developer.upsun.com/docs/integrations/notifications.md