get
https://api.loopsubscriptions.com/storefront/2026-04/bundle/transaction/
Leverage this API to fetch the content of a bundle purchased on a specific subscription. This will be useful to load a custom bundle editing experience for an existing bundle subscriber. Contact your account success manager to get the API access.
Fetches the current contents of a bundle purchased on a specific subscription. Use it to pre-populate a custom bundle-editing experience for an existing subscriber.
Auth: 🔒 Access-gated (beta). Pass the customer accessToken in the request headers.
The transactionId (read carefully)
transactionId (read carefully)transactionId is the transaction ID of the purchased bundle — not the Bundle ID and not the subscription/contract ID.
| Customer comes from | How to get transactionId | How to get the token |
|---|---|---|
| Loop subscription portal | Passed as the transactionId query parameter on your configured edit URL. | Passed as the token query parameter on the same URL. |
| Your custom portal | Read the _bundleId line-item property from a bundle line via the Read subscription details API. | Generate one via the Generate access token API. |
After loading the current contents, save changes with Update subscription bundle.