
Web Services API Reference July 2006 33
PayPal Web Services API Architecture
PayPal Web Services API Definitions
APIs to Exchange Funds or Display Information
All PayPal Web Services APIs deal with business transactions. However, the APIs can be
further categorized as follows:
z APIs that result in an exchange of funds:
– Authorization & Capture
–Direct Payment
– Express Checkout
– MassPay
– RefundTransaction
z APIs that provide information about business transactions:
– GetTransactionDetails
– TransactionSearch
Instant Payment Notification and the APIs
Use of a PayPal Web Services API that results in an exchange of funds triggers the sending of
an Instant Payment Notification email to the recipient of the funds. The APIs that send Instant
Payment Notification email messages are as follows:
z MassPay
z RefundTransaction
For more information about Instant Payment Notification, see the PayPal Order Management
Integration Guide.
GetTransaction
Details API
GetTransactionDetailsReq
uest
GetTransactionDetailsRes
ponse
api.paypal.com/2.0/
api-3t.paypal.com/2.0/
api.sandbox.paypal.com/2.0/
MassPay API MassPayRequest
MassPayResponse
api.paypal.com/2.0/
api-3t.paypal.com/2.0/
api.sandbox.paypal.com/2.0/
Refund
Transaction API
RefundTransactionRequest
RefundTransactionRespons
e
api.paypal.com/2.0/
api-3t.paypal.com/2.0/
api.sandbox.paypal.com/2.0/
Transaction
Search API
TransactionSearchRequest
TransactionSearchRespons
e
api.paypal.com/2.0/
api-3t.paypal.com/2.0/
api.sandbox.paypal.com/2.0/
T
ABLE 2.8 API Overview by Business Function and Service Endpoint
Business
Function SOAP Request/Response Production (Live)
Endpoint Test (Sandbox) Endpoint:
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