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C/C++ API Documentation | 2025.2

# P4 API for C/C++ Documentation

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The Helix C/C++ API enables a software developer to create applications that interact with Helix Core Server. Be sure to also read the code in the API's header and C files. Interfaces for Java, Perl, Ruby, Python, PHP, and other languages are available from the download page for Helix Core APIs.

### Overview

Learn the architecture and requirements for the API.

### Developer notes for P4API

Learn about new features and enhancements.

### Compiling and linking P4 Server applications

Learn how to build your application.

### Public Methods Reference

Learn how to use the methods of each class.

Using an earlier version of P4? View documentation for earlier versions.

Need more help? Browse all P4 documentation to find what you need.

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