Codex File Drop

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Drag or batch-add multiple files and folders from the VS Code or Cursor Explorer to the current Codex thread, including over Remote-SSH.

Why this extension exists

The Codex composer uses a webview. In some local, Remote-SSH, and Cursor setups, dragging resources from Explorer into the composer does not provide usable file URIs.

This extension bypasses that path:

Explorer file or folder selection
  -> native VS Code TreeView drop target
  -> chatgpt.addFileToThread once per resource
  -> resources appear in the current Codex thread

Features

• Native Explorer drop target: CODEX: DROP FILES HERE
• Batch Explorer context-menu action
• File and folder handoff
• Local VS Code and Remote-SSH support
• Cursor MIME compatibility and diagnostics
• Multi-file picker fallback when an editor omits drag URIs
• No telemetry, network requests, native binaries, or third-party dependencies

Requirements

• VS Code-compatible editor version 1.100.0 or newer
• Codex extension enabled (openai.chatgpt)

Install from Marketplace

Search for Codex File Drop in the Extensions view and select Install.

Install from VSIX

1. Download the VSIX from the latest GitHub Release.

2. In VS Code or Cursor, right-click the VSIX and choose Install Extension VSIX, or run:

   code --install-extension codex-multifile-drop-*.vsix --force
   

3. Run Developer: Reload Window.

For Remote-SSH, install the VSIX from a window already connected to the remote host.

Use

Drag and drop

1. Select one or more files or folders in Explorer.
2. Drag them to CODEX: DROP FILES HERE.
3. The resources are added to the current Codex thread.

Explorer context menu

Select multiple files or folders, right-click, and run:

Codex: Add ALL Selected Files to Current Thread

File picker

Click Drop selected files here in the drop-target view to open a multi-file picker. The picker selects files only; use drag-and-drop or the Explorer context menu to add folders.

Folder behavior

Adding a folder passes its path to Codex. The extension does not eagerly expand the directory and attach every file. Codex can inspect the folder as needed for the task.

Verified environments

• VS Code 1.133.0, including Remote-SSH
• Cursor 3.16.17, including Remote-SSH
• OpenAI Codex extension 26.810.41047 and 26.5810.41047

Other versions may work but have not yet been verified.

Privacy and security

The extension does not send network requests or collect telemetry. It passes selected workspace resource URIs to the Codex extension through chatgpt.addFileToThread. Cursor drag diagnostics remain in the local Output panel and may contain local file paths.

Limitations

• Files that exist only on a local desktop must first be available to the editor or remote workspace.
• The extension depends on the Codex command ID chatgpt.addFileToThread. A future Codex update could rename or remove it.
• It cannot inject custom UI directly into the Codex composer.

License

MIT