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. Contact your account success manager to enable API access.
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.