Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

Event Notification SDK

With notifications, business moments are communicated to all interested listeners a.k.a. subscribers of those event streams. eBay's most recent notification payloads are also secured using ECC signature headers.

This OpenAPI powered springboot SDK is designed to simplify processing eBay notifications. The application receives subscribed messages, validates the integrity of the message using the X-EBAY-SIGNATURE header and delegates to a custom configurable MessageProcessor for plugging in usecase specific processing logic.

Table of contents


This SDK is intended for the latest eBay notifications that use ECC signatures and JSON payloads. While this SDK is generic for any topics, it currently includes the schema definition for MARKETPLACE_ACCOUNT_DELETION notifications.

This SDK now also incorporates support for endpoint validation.


This SDK is intended to bootstrap subscriptions to eBay Notifications and provides a ready springboot deployable. This SDK incorporates

  • A deployable application that is generic across topics and can process incoming https notifications
  • Allows registration of custom Message Processors.
  • Declarative OpenAPI powered schema definitions and code generation
  • Verify the integrity of the incoming messages
    • Use key id from the decoded signature header to fetch public key required by the verification algorithm. An LRU cache is used to prevent refetches for same 'key'.
    • On verification success, delegate processing to the registered custom message processor and respond with a 204 HTTP status code.
    • On verification failure, respond back with a 412 HTTP status code
  • With release 1.1.0 - includes support for generating the challenge response required for validating this endpoint.
    More details on endpoint validation is documented here.



maven: version 3.5.0 (or later)
jdk: 8 (or later)


Update application.yaml with:

  • Path to client credentials (required to fetch Public Key from /commerce/notification/v1/public_key/{public_key_id}).
    Sample Client Credentials Configuration: ebay-config.yaml.

  • Environment (PRODUCTION or SANDBOX). Default: PRODUCTION

  • Verification token associated with your endpoint. A random sample is included for your endpoint. It is recommended that this verification token be stored in a secure location and this needs to be the same as that provided to eBay.

  • Endpoint specific to this deployment. A random url is included as an example.

For MARKETPLACE_ACCOUNT_DELETION use case simply implement custom logic in AccountDeletionMessageProcessor.processInternal()

Install and Run

mvn spring-boot:run 

Onboard any new topic in 3 simple steps! :

Note on Production deploys

For production, please host with HTTPS enabled.


Uses standard slf4j logging.


Once AsyncAPI opensource tooling supports an ability to limit code generation to models only from a subscriber facing contract, will switch the implementation to use AsyncAPI contracts exclusively. The schema definitions are externalized so a transition to AsyncAPI codegen would be trivial.


Copyright 2021 eBay Inc.
Developer: Sekhar Banerjee

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.