ADP

ADP Event Notifications API

ADP's change-data-capture surface. When data changes in an ADP product ADP generates an event notification and delivers it either into the subscriber's FIFO message queue, drained with GET/DELETE /core/v1/event-notification-messages, or — since October 2025 — by POSTing it to a partner-hosted webhook endpoint signed with an HMAC-SHA256 adpx-messageauthentication header. Events must be subscribed per application; an unsubscribed event is never delivered.

GitHub

Documentation

📖
Documentation
https://developers.adp.com/getting-started/key-concepts/adp-event-apis-and-event-notification-guide

Other Resources

🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/adp/refs/heads/main/asyncapi/adp-event-notifications-webhooks.yml
🔗
Portal
https://developers.adp.com

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API entry from apis.yml

apis.yml Raw ↑ 
aid: automatic-data-processing:event-notifications-api
name: ADP Event Notifications API
description: ADP's change-data-capture surface. When data changes in an ADP product ADP generates an event
  notification and delivers it either into the subscriber's FIFO message queue, drained with GET/DELETE
  /core/v1/event-notification-messages, or — since October 2025 — by POSTing it to a partner-hosted webhook
  endpoint signed with an HMAC-SHA256 adpx-messageauthentication header. Events must be subscribed per
  application; an unsubscribed event is never delivered.
humanURL: https://developers.adp.com/getting-started/key-concepts/adp-event-apis-and-event-notification-guide
baseURL: https://api.adp.com
tags:
- Event
- Webhook
- Event Notifications
- Change Data Capture
- Integration
tags_raw:
- Events
- Webhooks
- Event Notifications
- Change Data Capture
- Integration
properties:
- type: Documentation
  url: https://developers.adp.com/getting-started/key-concepts/adp-event-apis-and-event-notification-guide
- type: Webhooks
  url: asyncapi/adp-event-notifications-webhooks.yml
- type: Portal
  url: https://developers.adp.com