OpenAI

Fix "Could not find Codex package or platform npm release assets for Codex" when installing or updating Codex CLI. Causes: GitHub API rate limits and a stale install.sh.

Learn what Codex Auto Mode allows, how sandbox and approval settings work, and 3 ways to enable it: flags, config.toml, or /permissions.

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.

Why is Codex so slow? Usually reasoning effort, a bloated session context, or a weekly rate limit. Lower the effort level, run /compact, and check /status — each fix takes seconds.

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.

Use codex resume --last to reopen your latest session with full history. Learn 5 commands to choose, prompt, or include sessions from other directories.

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.

Resolve `npm error code EACCES` and `EACCES: permission denied` when running npm install -g @openai/codex. Move npm's global prefix off root-owned directories without sudo, then fix the follow-on "codex: command not found".

Resolve `Unable to locate the Codex CLI binary. Set CODEX_CLI_PATH or ensure the Electron resources include bin/codex.` in the Codex desktop app — WSL agent environment, non-default install drives, and setting CODEX_CLI_PATH correctly.

Where Codex CLI stores config.toml on macOS, Linux and Windows, an annotated example file, the six-level precedence order, and how to check which config is actually in effect.