Before you start
Besides your eBay seller account, you need an eBay Developers Program account. That is where the keys are made: the first step in eBay’s guide to creating them is to sign in to it1.
Postage, payment and return policies come from your eBay account, so set them up in eBay before you connect.
Create a Production keyset
Open Application Keys
Sign in to your eBay Developers Program account, go to the Application Keys page and enter a name for your application1.
Create the keyset
Under Production, click Create a keyset. It then appears on the Application Keys page and on your My Account dashboard1.
Note the App ID and Cert ID
Copy both from the Production keyset. invtri asks for them when you connect.
Create your RuName
Open User Tokens
On the Application Keys page, click User Tokens next to the Client ID for Production, then open Get a Token from eBay via Your Application2.
Add a redirect URL
If eBay says “You have no Redirect URLs. Click here to add one.”, click the link. Confirm the legal address for your business or primary contact, then choose Continue to create RuName2.
Fill in the details
eBay asks for a Display Title, which appears on its Grant Application Access page, a Privacy Policy URL, an Auth Accepted URL and an Auth Declined URL2. For the addresses to use, check your invtri onboarding manual or email [email protected].
Copy the Production RuName
Each application gets one RuName for Sandbox and one for Production, and tokens work only in the environment they were made for2. Copy the Production one.
Connect eBay in invtri
Enter your keys
In invtri, add eBay as a channel, choose the country, enter your App ID, Cert ID and RuName, and add the address your items ship from.
Sign in to eBay
Sign in to eBay and agree to give access on eBay’s Grant Application Access page3. Back in invtri, pick your postage, payment and return policies.
Let it run
invtri lists your products and keeps stock and price up to date. It brings in orders every 15 minutes, sends tracking back to eBay and lets you refund from invtri.
Questions
How often will I need to sign in to eBay again?
eBay’s refresh token lasts 47,304,000 seconds, about 18 months3. eBay asks you to agree again when it expires or the app’s scopes change, and revokes it if you change your eBay user name or password3.
Can I fulfil eBay orders from my Amazon FBA stock?
Yes, with the Amazon channel and the Amazon FBA & MCF add-on. invtri blocks Amazon Logistics by default on eBay orders, so deliveries stay within eBay’s carrier rules.
Can I list on more than one eBay site?
Yes: eBay UK, Germany, France, Italy, Spain and the US. All are under your eBay channel: connect each country you sell in.
Sources
Last reviewed on 9 November 2026.
- Creating the eBay API keysetseBay Developers Program, accessed 8 November 2026
- Getting your redirect_uri valueeBay Developers Program, accessed 8 November 2026
- OAuth tokenseBay Developers Program, accessed 8 November 2026
