pluginbeginnerChatGPT/Codex

Codex CLI: The Official OpenAI Coding Agent for your Terminal

Codex CLI is a tool from OpenAI that lets developers use a powerful AI coding assistant directly within their computer's command line. This allows for quick code generation, bug fixing, and scripting without needing to switch to a web browser or a separate application, accelerating development tasks.

AI SETUP PROMPT

Paste into Codex CLI — it will scan your project and set everything up

# Install & Configure: Codex CLI: The Official OpenAI Coding Agent for your Terminal

## What This Is
Codex CLI is a tool from OpenAI that lets developers use a powerful AI coding assistant directly within their computer's command line. This allows for quick code generation, bug fixing, and scripting without needing to switch to a web browser or a separate application, accelerating development tasks.

Source: https://github.com/openai/codex

## Before You Start

Scan my workspace and analyze:
- The project language, framework, and directory structure
- Existing agent configuration (check for .claude/, .codex/, CLAUDE.md, settings.json, commands/, skills/ directories)
- Whether this repository or a similar tool is already cloned or installed

Then ask me before proceeding:
1. Do I need to configure any service credentials for this plugin (database, API keys, etc.)?
2. Should this be project-scoped or global?

## Fetch the Source

Clone or inspect the repository to understand what needs to be installed:
```bash
gh repo clone openai/codex
```
Review the README, directory structure, and any install instructions before proceeding.

## What to Implement

This is an **Agent Plugin** — typically an MCP server or capability bundle.

- Install any required npm/pip packages from the source repository
- Register the MCP server in `.claude/settings.json` under the `mcpServers` key with the correct command and args
- Configure any required environment variables or credentials
- Verify the server starts correctly by checking its expected output

## Additional Context

- Scan the user's system to detect the presence of `npm` or `brew`. Install the `@openai/codex` package globally using the preferred package manager (`npm install -g @openai/codex` or `brew install --cask codex`).
- Check the user's environment files (e.g., `.env`, `.zshrc`, `.bash_profile`) for an existing `OPENAI_API_KEY`. If found, inform the user that the CLI can be configured to use it. If not found, advise the user that the primary authentication method is interactive sign-in with a ChatGPT account.
- Execute `codex --version` to verify the installation was successful and output the version number. Then, execute `codex --help` to display the list of available commands and provide a summary to the user for their first use.

## Reference Implementation

```
```shell
# Install using npm
npm install -g @openai/codex
```
```

## Guidelines

- Adapt everything to my existing project — do not assume a specific stack or directory layout
- Review any fetched code for safety before installing or executing it
- After setup, run a quick verification and show me a summary of exactly what was installed, where, and how to use it

2,717 charactersCompatible with Claude Code & Codex CLI

MANUAL SETUP STEPS

01Scan the user's system to detect the presence of `npm` or `brew`. Install the `@openai/codex` package globally using the preferred package manager (`npm install -g @openai/codex` or `brew install --cask codex`).
02Check the user's environment files (e.g., `.env`, `.zshrc`, `.bash_profile`) for an existing `OPENAI_API_KEY`. If found, inform the user that the CLI can be configured to use it. If not found, advise the user that the primary authentication method is interactive sign-in with a ChatGPT account.
03Execute `codex --version` to verify the installation was successful and output the version number. Then, execute `codex --help` to display the list of available commands and provide a summary to the user for their first use.

CODE INTELLIGENCE

bash

```shell
# Install using npm
npm install -g @openai/codex
```

FIELD OPERATIONS

CLI-based Boilerplate Generator

Build a shell script that uses the Codex CLI to automatically generate boilerplate code for new components in a React/Vue/Svelte project. The script can take a component name as an argument and pipe a prompt to `codex` to generate the initial file structure and content.

Automated Data-Cleaning Script

Create a data cleaning pipeline where a shell script reads a messy CSV file, pipes a sample of rows to the Codex CLI with a prompt like 'Reformat this CSV data into a clean JSON object with keys: id, name, date', and then writes the structured output to a new file.

STRATEGIC APPLICATIONS

→A DevOps engineer uses the Codex CLI to quickly generate shell scripts, Dockerfiles, or Kubernetes configurations for new microservices, reducing the time spent on repetitive infrastructure setup.
→A data analyst uses the Codex CLI to write and debug complex SQL queries directly in their terminal while connected to a database, allowing for rapid data exploration without breaking their workflow.