Oracle Integration Cloud (OIC) is a cloud-based integration platform offered by Oracle that allows organizations to integrate applications and services from various sources and technologies. It facilitates seamless data flow and process automation across cloud and on-premises applications. OIC offers several APIs that enable you to interact programmatically with the platform. Some key APIs in Oracle Integration Cloud include:

1. REST API: Oracle Integration Cloud provides a REST API that allows you to manage integrations, connections, schedules, and other artifacts in the platform. You can use this API to create, update, delete, and monitor integration instances, connections, and more.

2. Integration API: The Integration API is used to programmatically manage integrations, packages, lookups, connection instances, and errors associated with integrations. This API allows you to perform CRUD (Create, Read, Update, Delete) operations on integration artifacts.

3. Connectivity Agent API: If you’re using an on-premises Connectivity Agent to connect to applications or systems behind your organization’s firewall, you can utilize the Connectivity Agent API to manage and monitor the agent instances.

4. Monitoring API: The Monitoring API lets you programmatically access monitoring data related to integration instances, such as tracking their status, success rate, errors, and other metrics.

5. Insight API: The Insight API allows you to query and retrieve real-time data and metrics related to your integrations. It is useful for building custom monitoring dashboards or reports.

6. Security Policies API: The Security Policies API enables you to manage security policies and certificates used for secure communication in Oracle Integration Cloud.

To use these APIs, you typically need to authenticate using an OAuth token or other authentication methods provided by Oracle. Additionally, you can interact with the APIs using popular programming languages like Python, Java, or JavaScript.