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Course Outline

Introduction to OpenAI Codex CLI

  • Understanding Codex CLI and its 2025 open-source Rust architecture
  • Core features: prompt execution, file operations, Bash execution, and multi-step task management
  • Comparative analysis with Claude Code and other terminal agents
  • Overview of approval modes and security boundaries

Installation and Setup

  • Installing Codex CLI on macOS and Linux environments
  • Configuring API keys for OpenAI and compatible third-party providers
  • Connecting to local backends via Ollama and Atomic Chat
  • Setting up SSH and remote development environments

Core Workflow Commands

  • Executing single prompts and managing multi-turn sessions
  • Performing file read, write, and edit operations via prompts
  • Running shell commands and handling piped outputs
  • Managing working directories and project context

Approval Modes and Safety Mechanisms

  • Configuring automatic, ask-before-execute, and fully manual approval modes
  • Implementing sandboxing and distinguishing between read-only and write-enabled sessions
  • Safely handling destructive commands and file deletions

Git and CI Integration

  • Utilizing Codex CLI to generate commits and diffs
  • Implementing pre-commit hooks with agent-based code review
  • Running Codex CLI in headless CI environments
  • Integrating with GitHub Actions and GitLab CI pipelines

MCP Server Integration

  • Connecting to Model Context Protocol servers
  • Extending tool capabilities through custom MCP endpoints
  • Developing internal MCP tools for proprietary systems

Multi-Backend Support

  • Switching between OpenAI, Gemini, and GitHub Models APIs
  • Performing local inference with Ollama and self-hosted endpoints
  • Strategies for selecting models based on latency versus quality requirements

Team Deployment and Governance

  • Managing shared configurations and secrets
  • Establishing usage policies and audit logging for enterprise compliance
  • Setting up standardized team prompts and security guardrails

Custom Prompts and Workflows

  • Creating reusable prompt templates
  • Chaining tasks for complex refactoring projects
  • Batch processing multiple files and repositories

Performance Tuning

  • Understanding Rust performance characteristics
  • Optimizing token usage for large-scale projects
  • Managing caching and session state effectively

Troubleshooting Common Issues

  • Resolving connection failures to backend services
  • Debugging prompt ambiguity and misinterpretations
  • Handling rate limiting and implementing retry strategies

Security Best Practices

  • Protecting API keys in shared development environments
  • Preventing prompt injection and command hijacking attacks
  • Addressing data residency and compliance considerations

Summary and Next Steps

  • Recap of core capabilities and workflows
  • Community resources and opportunities for open-source contributions
  • Transitioning to advanced topics in multi-agent orchestration

Requirements

  • Experience in software development using any programming language
  • Familiarity with basic command-line and terminal operations
  • Understanding of Git fundamentals

Target Audience

  • Software developers interested in integrating AI terminal agents into their daily workflow
  • DevOps engineers exploring Rust-based AI tooling solutions
  • Team leaders evaluating OpenAI Codex CLI for enterprise adoption
 14 Hours

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