What is the PayPal Developer Portal?
The PayPal Developer Portal offers support for developers who have questions about technical topics, such as APIs or integration. Below is a list of common topics searched for by developers. You can also browse and search on the Developer Portal for additional topics.
Information about validating your visitor's PayPal account.
Use the Adaptive Accounts API to build applications that create and manage PayPal accounts.
Adaptive Payments API
Use the Adaptive Payments API to pay almost anyone and set up automated payments.
Send online payments quickly and securely using PayPal Business Payments.
Whether you're a game developer selling virtual goods and currencies or a media developer selling news content, video, blogs, music or any other premium digital media our new solution, PayPal for Digital Goods is the optimal solution for selling digital content.
Encrypted Website Payments
To make online payments more secure, you can make Encrypted Website Payment buttons that rely on standard public key encryption for protection.
Express Checkout API
Express Checkout allows merchants and developers to minimize the number of steps customers complete when they checkout.
Information and help on payments and game development.
PayPal offers a secure commerce Identity API that lets your customers sign in to your web site using their PayPal credentials.
Instant Payment Notification
Instant Payment Notification is a message service that automatically notifies merchants of events related to PayPal transactions.
Merchants, developers, and business solution providers use Invoicing APIs to automate the creation, delivery, tracking, and reconciliation of invoices with an integrated payments solution.
Mobile Express Checkout
Mobile Express Checkout allows merchants to simplify checkout for customers using mobile devices, including iPhone®, iPad®, Android devices, Blackberry, and Windows Phone 7.
Name-Value Pair (NVP) API
Information and support on name value pairs and NVP SDKs.
Payflow Pro is a high performance TCP/IP-based client-server architecture solution. It includes a secure payment gateway that gives merchants total control over the payment process.
PayPal Sandbox Support
Information and support for users testing in the PayPal Sandbox environment.
PayPal Shopping Cart
The PayPal Shopping Cart system allows buyers to select multiple items on your website and pay for them with a single payment.
Permissions Service API
PayPal's permissions service enables you to request and obtain authorization to make API calls and take action on behalf of your customers.
The PayPal SOAP API is based on open standards known collectively as web services, which include the Simple Object Access Protocol (SOAP), Web Services Definition Language (WSDL), and the XML Schema Definition language (XSD).
Testing Your Apps in Sandbox
A guide for developers testing their apps in the PayPal Sandbox environment.
Information about PayPal's Virtual Terminal - a web-based application that processes credit and debit cards, replacing swipe machines.
Website Payments Pro
PayPal's Website Payments Pro is an API-based solution that enables merchants and developers to accept credit cards, debit cards, and PayPal payments directly on their website.