solo-developer

Agent-powered subscription management

Postman FlowsPayPal APIsOpenAISendGrid APITwilioMock APIs
Stack tools6
AddedMar 2026
StatusPublished

Demo app successfully extracts PayPal subscriptions, AI recommends cancellations/savings (e.g., discontinue Netflix/T-Mobile/Dropbox), emails results; tested multiple scenarios; leverages 100K+ Postman forks

solo-developer

Why they built it

PayPal users struggle tracking scattered subscriptions (e.g., duplicate Netflix); centralize via PayPal wallet/APIs with AI savings recommendations.

What worked

Forking PayPal public workspace (60% ready), drag-drop no-code, out-of-box OpenAI, scenario testing with sandbox users, quick visual debugging.

What broke or was painful

Needed to filter transactions for subscriptions (no direct endpoint initially); setup required backward engineering PayPal portal for products/plans/merchants; messy workspace cleaned manually; upcoming PayPal blocks will simplify

The result

Demo app successfully extracts PayPal subscriptions, AI recommends cancellations/savings (e.g., discontinue Netflix/T-Mobile/Dropbox), emails results; tested multiple scenarios; leverages 100K+ Postman forks

References