OpenAI (2025-08-23)

Added file operations and enhanced agent capabilities:

New file management actions: Upload File, Download File, and Delete File for use with OpenAI
Tool Flow Trigger to enable flows as callable AI agent tools
File attachment support in agent runs for processing PDFs, images, and documents
Enhanced agent branching with file IDs and MCP server integration
Improved agent configuration with custom tools and MCP servers
Comprehensive test coverage for new file operations