If Webhooks

generated: '2026-07-19'
method: searched
source:
- https://developer.integrated.finance/docs/webhook-overview
- https://developer.integrated.finance/docs/webhooks
spec_type: Webhooks
surface: webhooks
transport: HTTPS POST callbacks to subscriber-registered endpoints
authentication:
  signature_header: X-Webhook-Signature
  algorithm: Ed25519
  signing_base: 'Content-Digest | Event-Id | Event-Timestamp | Request-Id | Request-Timestamp | Key-Version'
  verification: Verify the signature against the IF-published Ed25519 public key (Key-Version selects the key).
retry:
  automatic: true
  max_attempts: 5
  schedule:
  - attempt: 1
    after: 5m
  - attempt: 2
    after: 15m
  - attempt: 3
    after: 30m
  - attempt: 4
    after: 1h
  manual_retry: Available via API for deliveries in "failed" status only (not "processing" or "successful").
event_domains:
  note: >-
    The docs describe the delivery/authentication/retry infrastructure but do not
    publish a full enumerated event catalog. Webhook-emitting domains observed in the
    reference and changelog include:
  domains:
  - cards (including card tokenisation events — added 2025-09-22)
  - card-transactions
  - card-transaction-authentications (3DS)
  - incoming-transfers
  - outgoing-transfers
  - exchanges
  - generic-transactions
  - open-banking-consents
docs: https://developer.integrated.finance/docs/webhooks