eBay Webhooks

When to Use This Skill

• How do I receive eBay webhooks (notifications)?
• How do I pass eBay's endpoint challenge validation (challenge_code)?
• How do I verify the x-ebay-signature header (ECDSA)?
• How do I use the eBay getPublicKey endpoint and cache the public key?
• How do I handle MARKETPLACE_ACCOUNT_DELETION (marketplace account deletion / closure) notifications?
• Why is my eBay signature verification failing?

How eBay Webhooks Differ From Most Providers

eBay does not use HMAC with a shared secret, and does not follow the Standard Webhooks spec. Two distinct mechanisms are involved: