Open Source Codex Tools
Codex is an AI-assisted coding environment that helps developers understand code, plan changes, generate and edit files, run development tasks, and review results. Tools in this area extend or connect coding agents to existing workflows, helping with tasks such as code review, project exploration, secure access to local services, and collaboration between agents. They can reduce repetitive work while keeping developers responsible for decisions and verification.
Open source Codex tools include integrations, command-line utilities, agent bridges, and services that connect coding workflows to other systems. When choosing one, check its license, maintenance activity, documentation, runtime requirements, and compatibility with your editor, repository, and preferred agent setup. Review how it handles permissions, credentials, and code data, especially when connecting local resources to remote services. These tools can be useful to individual developers, teams, and maintainers looking to adapt or extend AI-assisted software development.
5 repositories · updated September 2, 2026
tunnel-client: Securely Connect Private MCP Servers to OpenAI Services
The `tunnel-client` is an OpenAI-developed client that enables secure connections between private or localhost Model Context Protocol (MCP) servers and OpenAI services like ChatGPT, Codex, and AgentKit. It allows developers to integrate their internal MCP servers without exposing them to the public internet, ensuring enhanced security and operational control. This tool is ideal for scenarios requiring secure access from private networks to OpenAI's powerful AI models.
Free Claude Code: Access AI Coding Agents and 1.3B+ Free Tokens
Free Claude Code is an independent open-source project that allows developers to use various AI coding agents like Claude Code, Codex, Pi, and OpenCode for free. It provides access to over 50 ToS-friendly providers, offering more than 1.3 billion free tokens monthly. This tool integrates seamlessly across terminals, desktop apps, IDEs, and even phones, enhancing productivity and ensuring continuous coding through provider outages.
Codex MCP Server: Bridge Claude Code with OpenAI Codex CLI
Codex MCP Server is an essential tool that acts as a bridge between Claude Code and OpenAI's Codex CLI. It allows developers to integrate powerful AI-driven code analysis, generation, and review capabilities directly into their editor. This server wrapper enables Claude Code to fully leverage Codex's advanced AI functionalities.
AgentBridge: Local Bridge for Claude Code and Codex Collaboration
AgentBridge is an innovative local tool designed to facilitate real-time, bidirectional collaboration between Claude Code and Codex AI agents. It enables seamless cross-review, task splitting, and quota relay, allowing these powerful models to work together efficiently within a single session without manual intervention. Notably, the tool itself was largely built by Claude Code and Codex collaborating through AgentBridge.
codex-plugin-cc: Integrate OpenAI Codex for Code Reviews in Claude Code
The `codex-plugin-cc` repository offers a powerful integration for Claude Code users, enabling them to leverage OpenAI's Codex directly within their existing workflow. This plugin facilitates AI-powered code reviews, task delegation, and background job management, streamlining development processes. It provides a suite of commands for various review types and task handling, significantly enhancing developer productivity.