OpenAI

Configure OpenAI Codex CLI approval and sandbox modes for your workflow. Learn the differences between suggest, auto-edit, and full-auto modes, and set appropriate safety levels for your environment.

Resolve context window limit errors in OpenAI Codex CLI. Learn to manage token counts, use context compaction, configure file exclusions, and work effectively within model context limits.

Diagnose and resolve slow performance issues in OpenAI Codex CLI. Optimize response times, reduce latency, handle large context windows efficiently, and configure settings for faster interactions.

Step-by-step Codex CLI installation for Mac, Linux, and Windows. Resolve npm PATH issues and "command not found" errors to get up and running in 2026.

Learn how to integrate OpenAI Codex CLI with VS Code, Cursor, and Windsurf. Includes extension setup, terminal workflows, configuration options, and platform-specific instructions for macOS, Windows, and Linux.

Cut your OpenAI API bill from Codex CLI and the OpenAI SDK. Use prompt caching, smaller models, batching, context trimming, and local routing to spend fewer tokens without losing quality.

Run codex resume --last to reopen your previous Codex CLI session, or codex resume to pick from history. Session picker, IDs & JSONL file location.

Run Qwen2.5-Coder locally with llama.cpp or Ollama and expose it as an OpenAI-compatible API. Point Codex CLI, Aider, or the OpenAI SDK at your own GPU for private, no-cost coding.

Complete guide to configuring Model Context Protocol (MCP) servers in OpenAI Codex CLI. Connect Codex to GitHub, Figma, databases, and other external tools for enhanced AI-assisted development.

Change models with the --model flag or config.toml. Switch between GPT-5.2-Codex and Mini to optimize performance and credit usage.

Learn how to use OpenAI Codex CLI's /review command for AI-powered code reviews. Master reviewing staged changes, customizing review criteria, and integrating Codex into your git workflow.

Configure OpenAI Codex CLI or any OpenAI SDK to use a custom base URL. Route requests to a self-hosted gateway, proxy, or local inference server while keeping the OpenAI-compatible API.

Complete guide to using Git worktrees with OpenAI Codex CLI for parallel development. Learn project root detection, AGENTS.md behavior, session management across worktrees, and best practices for multi-branch workflows.

Learn how to use the --image flag in OpenAI Codex CLI to convert mockups to code, analyze UI screenshots, and implement design-to-code workflows. Includes platform-specific tips for macOS, Windows, and Linux.

Configure OpenAI Codex CLI to use local LLMs via Ollama, LM Studio, or other OpenAI-compatible APIs. Run coding tasks privately without sending data to external services.

Every slash command available in OpenAI Codex CLI — navigate sessions, manage context, and control AI behavior. Includes keyboard shortcuts and practical examples.

Find Codex CLI config, auth, sessions & logs in ~/.codex. Exact paths for config.toml, auth.json, history.jsonl & session JSONL on Mac/Linux/Win.