# Paypal API Review

**Author:** kinlane  
**Canonical:** https://apievangelist.com/2010/10/12/paypal-api-review/

[PayPal](http://www.paypal.com/) is an e-commerce business allowing payments and money transfers to be made through the Internet. PayPal serves as an electronic alternative to traditional paper methods such as checks and money orders.

[Paypal offers a RESTful API](https://developer.paypal.com/) using a credential / signature authentication. Paypal provide a read / write API for payment transactions. Paypal includes software development kits (SDK) in PHP, Java, and .NET.

**Building Blocks:**

> **Technology**
> 
> *   RESTful API
> 
> **Documentation / Tools**
> 
> *   Dashboard
> *   API Reference
> *   Express Integration
> *   Getting Started
> *   How it Works
> *   SDK / Code Libraries
> *   3rd Party Tools
> *   Mobile
> *   Sandbox
> *   Buttons
> *   Widgets
> *   Pricing
> *   Certification
> *   Tutorials
> *   International
> *   Case Sudies
> *   Videos
> 
> **Support / Management**
> 
> *   Blog
> *   Phone Number
> *   Email
> *   Change Log
> 
> **Community**
> 
> *   Forum
> 
> **Developer**
> 
> *   Account Management
> *   App Showcase

Paypal provides a large number of tools for its API. However, this information is spread across several areas making it difficult to find all of it.