This chapter provides an overview of the Siebel CRM Representational State Transfer (REST) application programming interface (API). It includes the following topics:

• About Siebel CRM REST API
• About Siebel REST API Architecture
• About Siebel CRM REST API Requests and Responses
• About Siebel CRM REST API URI Formats
• About URI Parameters
• About Siebel CRM REST API Supported Resources
• About Supported HTTP Methods
• About Supported HTTP Header Fields
• About Standard HTTP Status Codes and Error Messages
• About Siebel CRM REST API Response Links
• About User Authentication
• About Configuring OAuth 2.0 for Authentication