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Codex Manual

Codex Hub

Start from installation, choose the right Codex surface, understand platform differences, and learn CLI, App, IDE extension, Web/Cloud, plugins, skills, and XAI Router integration step by step.

Codex Hub

This is a beginner-friendly Codex manual. Start with installation and your first local project, then move into configuration, permissions, XAI Router integration, and advanced capabilities.

Recommended path:

  1. Understand what Codex is.
  2. Install it for your operating system.
  3. Choose CLI, App, IDE Extension, or Web/Cloud.
  4. Complete one small task in a real project.
  5. Configure XAI Router, safety settings, and advanced workflows.

Sources checked on 2026-07-08: OpenAI Codex manual, the local /tmp/codex repository, and existing XAI Router articles.

1 What Is Codex A plain-language introduction to Codex, its use cases, and its boundaries. 2 Download and Install Install Codex on macOS, Windows, WSL2, and Linux. 3 Choose a Surface CLI, App, IDE Extension, and Web/Cloud use cases. 4 Your First Task Open a real project and run a small, verifiable Codex task. 5 Config and Login Understand config.toml, CODEX_HOME, environment variables, and platform-specific paths. 6 Use XAI Router Use XAI Router to manage Codex models, keys, quotas, and routing. 7 Permissions and Safety Understand sandboxing, approvals, and safe defaults. 8 Common Workflows Prompts for understanding projects, fixing bugs, adding tests, reviewing code, and updating docs. 9 Advanced Capabilities Goals, Skills, Plugins, Subagents, MCP, and further reading.