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Mcode is an open-source AI IDE built on Code-OSS and powered by Codex. It keeps the familiar VS Code workflow while replacing the usual AI interface with a focused, Cursor-style Codex workbench.
One local machine. One Codex subscription. Multiple offline SSH servers.
Sign in to your ChatGPT/Codex subscription on an internet-connected local machine, then use Mcode to work across multiple SSH servers that cannot access the public internet. Codex authentication, model traffic, Agent, and MCP stay local. Remote hosts need no ChatGPT/Codex sign-in, API key, or connection to OpenAI, GitHub, or an extension marketplace; Mcode transfers the required offline execution components over SSH.
- Use one locally signed-in Codex subscription to work with multiple offline SSH workspaces.
- Provide the familiar VS Code editor, Explorer, terminal, Git, debugging, extensions, and Remote SSH workflow.
- Chat with Codex, ask questions about a project, investigate problems, edit files, and run agent tasks from the right sidebar.
- Keep Codex login and model access on the local machine while the Agent reads, edits, searches, and runs commands remotely through SSH.
- Add files, folders, selections, and images to a conversation by dragging them in or using context controls.
- Open file references directly in the editor and review generated changes with native diffs before keeping them.
- Run multiple Codex conversations in separate tabs without stopping background tasks when switching tabs.
- Keep detailed tool activity compact while preserving a readable user-and-assistant conversation.
Mcode is currently an early Windows x64 preview. It is suitable for testing and feedback, but some workflows and platform builds are still under development.
Download the latest Mcode release
Mcode is licensed under Apache-2.0. Code-OSS, Codex, and bundled extensions retain their respective licenses; see THIRD_PARTY_NOTICES.md.