Andromeda Codex VS Code Extension

OpenAI's Codex CLI integration for VS Code.

Features

• Codex: Run Prompt
  Run a custom prompt on the current file using Codex CLI.

• Codex: Model o4-mini
  Run a custom prompt using the o4-mini model.

• Codex: Fix Selected Code
  Select code, right-click, and choose "Fix Selected Code" to run codex fix on your selection in a terminal.

• Codex: Edit Selected Code
  Select code, right-click, and choose "Edit Selected Code" to run codex edit on your selection in a terminal.

• Codex: Generate Unit Test for Codebase
  Select code, right-click, and choose "Generate Unit Test for codebase" to run codex generate unit test on codebase.

Usage

1. Select code in the editor.
2. Right-click and choose the desired Codex command from the context menu, or use the Command Palette (Ctrl+Shift+P).
3. The extension will write your selection to a temporary file and run the appropriate Codex CLI command in a new terminal.

Requirements

• Node.js
• Codex CLI (installed via npx)

Changelog

See CHANGELOG.md for details.

Codex Chat with GPT-4.1

Interact with OpenAI's GPT-4.1 directly from Visual Studio Code using the Codex Chat feature.

How to Use

1. Open the Command Palette (Ctrl+Shift+P or Cmd+Shift+P).
2. Search for and select "Codex Chat with GPT-4.1".
3. Enter your question or prompt in the input box.
4. When prompted, enter your OpenAI API key.
5. View the AI's response in a popup dialog.

Requirements

• An OpenAI API key with access to GPT-4.1.

Example

User: How do I reverse a string in Python?
Codex Chat:

my_string = "hello"
reversed_string = my_string[::-1]
print(reversed_string)  # Output: "olleh"

Codex Chat Feature

You can interact with Codex (GPT-4.1) using special instructions in your editor:

Usage

• Copilot Chat:
  Type your question or instruction in the Copilot chat panel.

• @chat=codex:
  Start your message with @chat=codex to direct your prompt to the Codex model.

• @chat-codex/Codex Assistant:
  Use @chat-codex or select Codex Assistant as your chat provider.

Example Prompts

@chat=codex
How do I create a REST API in Node.js?

or

@chat-codex
Show me how to write a binary search in Python.

Notes

• Codex Chat leverages GPT-4.1 for advanced code understanding and generation.
• Make sure you have access to the Codex model via your OpenAI account.