Product data and marketplaces
Connect eBay to Hypamoon
Possible, with help from eBay. The API is documented, but you cannot just create a key: access goes through eBay first.
PossibleThe check
Three questions about the API of eBay, answered from its own docs.
- Public API docs
- Yes. Read the docs
- A key you create yourself
- No. You join the eBay Developers Program and wait about one business day for account approval before you can create keysets. developer.ebay.com
- Versions or a changelog
- Yes. APIs are versioned, for example Account API v1, with release notes for all eBay APIs and several versions supported at a time. developer.ebay.com
- How it signs in
- OAuth user token for your seller account: access tokens last about two hours and are refreshed with a long lived refresh token.
- Webhooks
- Yes. It can tell your app when something changes. developer.ebay.com
- Hosting
- Cloud
- Condition
- Developer account approval by eBay, about one business day. Higher call limits or restricted APIs need an application growth check.
What you can build
Pull orders and listings from your eBay account into your own tools, and update stock or prices for approval.
Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. How adapters work
Good to know
- eBay signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for eBay takes more work: ask your chat to check this first.
- Before using production keys you must subscribe to, or opt out of, marketplace account deletion notifications.
Try it in your chat
First get access from eBay. Then fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for eBay. API docs: https://developer.ebay.com/develop/guides/sell/get-started-with-ebay-apis. Read: [what]. Write: [what, or nothing].
In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. The full recipe
Sources
Checked on 1 November 2026.
- developer.ebay.com/develop/guides/sell/get-started-with-ebay-apis
- developer.ebay.com/develop/api/sell/notification_api
eBay is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with eBay. Found something that changed? Tell us at support.
More in product data and marketplaces
Tool not listed? Ask the chat to check its API.
The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found.
Check if [software] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used.
Fill in the name of your software. Checking needs no connection to Hypamoon.
Ready to connect eBay?
Connect your chat once, then ask it to build the adapter.
Works in Claude and ChatGPT. Add to Claude Add to ChatGPT