Slope Webhooks

generated: '2026-07-21'
method: searched
source: https://developers.slopepay.com/docs/webhooks-overview
spec_type: Webhooks
delivery:
  transport: HTTPS POST (JSON body)
  expected_response: 2xx within 5 seconds
  retries: exponential backoff until 2xx
  ordering: events may arrive out of order; endpoint must be idempotent
configuration:
  sandbox: https://dashboard.sandbox.slopepay.com/developers
  production: https://dashboard.slopepay.com/developers
signing:
  header: Slope-Signature
  format: <timestamp>;<algorithm>=<hmac>,<algorithm>=<hmac>
  algorithm: HMAC-SHA256 over `${timestamp}.${JSON.stringify(body)}` with the webhook secret
  replay_protection: reject timestamps older than ~5 minutes
  supports_key_rotation: true
  docs: https://developers.slopepay.com/docs/signature-verification
source_ips:
  sandbox:
  - 18.219.53.61
  production:
  - 54.156.84.33
schema_docs: https://developers.slopepay.com/docs/schema
events:
- type: so.slope.customer.created
  description: New customer is created
- type: so.slope.customer.updated
  description: Customer object updated by you or Slope (e.g. limit or overdue order count change)
- type: so.slope.customer.authorized
  description: Customer authenticated into the Slope widget and authorized access to the merchant
- type: so.slope.customer.authorization_revoked
  description: Customer closed their account and unauthorized access to the merchant
- type: so.slope.customer.application_submitted
  description: Customer submitted an application to Slope
- type: so.slope.customer.credit_decision_reached
  description: Customer approved or rejected for a limit
- type: so.slope.prescreen.ready
  description: Prescreen succeeded and the result is ready
- type: so.slope.order.opened
  description: An order reached the open state
- type: so.slope.order.finalizing
  description: An order triggered finalize and is in the finalizing state
- type: so.slope.order.finalized
  description: An order reached the finalized state
- type: so.slope.order.adjustment.created
  description: An order adjustment (refund) has been created
- type: so.slope.transactions.updated
  description: A repayment happened on an order