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Integrate PayPal payment processing with support for express checkout, subscriptions, and refund management.
Passed 25 of 25 test cases with the skill, and 24 of 25 without it.
1 fixed24 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
A test case the skill fixed. Same model, same prompt, with and without the skill.
Our backend service receives PayPal Instant Payment Notification (IPN) HTTP POST callbacks. We want to verify that incoming callbacks are genuine without making outbound HTTP calls, simply by validating the IP address of the caller. Please explain how to handle IPN callback validation in our server logic.
| Checked | Without skill | With skill |
|---|---|---|
| The response specifies sending an HTTP POST request to `https://ipnpb.paypal.com/cgi-bin/webscr` for IPN validation. | Missed | Passed |
| The response includes `cmd=_notify-validate` in the IPN postback request payload. | Missed | Passed |
The instructions your model reads when the skill loads.
Master PayPal payment integration including Express Checkout, IPN handling, recurring billing, and refund workflows.
resources/implementation-playbook.md.test cases passed, vs 24 / 25 without
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