Developers
Use Codex with codebases, development environments, automation, and your team's tools.
Explore workflows
Codex supports everyday code work and deeper integrations across local and cloud environments. Its developer workflows span code review, the integrated terminal, reusable skills and plugins, automation with the SDK and App Server, team tools, and reference material for each surface.
Development workflows
Review changes and work with development tools in ChatGPT.
Extend and automate
Package development workflows and run deterministic automation.
- Build skills Package instructions and resources for repeatable tasks in ChatGPT and Codex.
- Build plugins Package skills and MCP servers for ChatGPT and Codex.
- Site tools (WebMCP) Use WebMCP to give AI agents a direct way to work with your website.
- Annotations Extensibility Customize website selection, context, and controls for browser annotations.
- Hooks Run custom commands when Codex emits lifecycle events.
Environments
Choose where development work runs and how it is isolated.
Codex Cloud
Run coding tasks in the cloud with your project tools and service access.
Build with Codex
Add Codex to products, systems, and automated workflows.
- Codex SDK Control Codex programmatically from your application.
- App Server Integrate with the protocol that powers Codex clients.
- Model catalogs Serve current model defaults through a cloud or gateway integration.
- GitHub Action Run Codex from GitHub Actions workflows.
- Non-interactive mode Run Codex from scripts and other automated systems.