Apply Patch#

AG2 Shell Tool Integration: Command Execution and Multi-Tool DevOps Orchestration

AG2's shell tool integration with OpenAI's Responses API enables agents to execute shell commands directly, unlocking powerful automation capabilities for filesystem operations, build processes, and system diagnostics. Combined with the apply_patch tool, you can orchestrate complete DevOps pipelines—from project creation to deployment validation—all within a single agent workflow.

This article explores how to leverage AG2's built-in tools for command execution, file operations, and multi-tool orchestration, with practical examples for automating development workflows and building production-ready DevOps pipelines.

GPT-5.1 Apply Patch Tool: Automated Code Editing in AG2

AG2 now supports the apply_patch tool (from GPT-5.1 onward) through OpenAI's Responses API, enabling agents to create, update, and delete files using structured diffs. This integration brings precise, controlled file operations directly into your agent workflows.

This article explores how to use apply_patch in AG2, with practical examples for automated code editing, project scaffolding, and multi-file refactoring.

What is Apply Patch?

The apply_patch tool is a built-in capability in GPT-5.1 and above models that enables agents to perform structured file operations using unified diff format. Unlike traditional code generation approaches where agents output raw code blocks that you must manually integrate, apply_patch provides a standardized interface for file modifications that can be directly applied to your codebase.

The tool handles three core operations: - create_file: Generate new files with specified content - update_file: Modify existing files using unified diff format - delete_file: Remove files from the workspace