Codex Configuration Tutorial
Codex Installation and Configuration Tutorial
Windows Version Tutorial
System Requirements
Installation Steps
Install Git Bash. Please visit Git - Downloads to download the version corresponding to your computer's operating system, then click "Next" repeatedly to complete the installation.
Visit the Node.js official website to download and install the latest LTS version.
Open Command Prompt (CMD) or PowerShell and run:
Open Command Prompt (CMD) or PowerShell and run:
Configure API
Visit the api.key4u.shop website and perform the following operations:
Important Note: Please replace sk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
1.
.codex folder in the current user's home directory, for example: C:\Users\testuser\.codex.(Note: If you cannot see this directory, it means you have not enabled "Show hidden items" in Windows. Please enable it in File Explorer first.)
2.
.codex folder does not exist, manually create it, then create two files within it: config.toml and auth.json.3.
sk-xxx with your actual SK).auth.json:{"OPENAI_API_KEY": "sk-xxx"}config.toml (you can directly paste the content below):model_reasoning_effort optional values are high, medium, low, representing the model's thinking effort level (high, medium, low) respectively.model_provider = "api111"
model = "gpt-5-codex"
model_reasoning_effort = "high"
disable_response_storage = true
preferred_auth_method = "apikey"
[model_providers.api111]
name = "api111"
base_url = "https://api.key4u.shop/v1"
wire_api = "responses"Start codex
Then navigate to your project directory:
VSCode Extension codex
codex in the VSCode extension marketplace.Mac Version Tutorial
System Requirements
Installation Steps
Open Terminal and run (may require
sudo):Open Terminal and run:
Configure API
Visit the api.key4u.shop website and perform the following operations:
Important Note: Please replace sk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
1.
2.
auth.json file:i to enter insert mode, paste the following content (replace sk-xxx with your key), then press ESC, type :wq and press Enter to save and exit.{"OPENAI_API_KEY": "sk-xxx"}3.
config.toml file:i to enter insert mode, paste the following content, then press ESC, type :wq and press Enter to save and exit.model_provider = "api111"
model = "gpt-5-codex"
model_reasoning_effort = "high"
disable_response_storage = true
preferred_auth_method = "apikey"
[model_providers.api111]
name = "api111"
base_url = "https://api.key4u.shop/v1"
wire_api = "responses"Start codex
Then navigate to your project directory:
VSCode Extension codex
codex in the VSCode extension marketplace.Linux Version Tutorial
System Requirements
Installation Steps
Open Terminal and run:
Open Terminal and run:
Configure API
Visit the api.key4u.shop website and perform the following operations:
Important Note: Please replace sk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
Important Note: Please replacesk-xxxbelow with the actual API key you generated at api.key4u.shop!
1.
2.
auth.json file:i to enter insert mode, paste the following content (replace sk-xxx with your key), then press ESC, type :wq and press Enter to save and exit.{"OPENAI_API_KEY": "sk-xxx"}3.
config.toml file:i to enter insert mode, paste the following content, then press ESC, type :wq and press Enter to save and exit.model_provider = "api111"
model = "gpt-5-codex"
model_reasoning_effort = "high"
disable_response_storage = true
preferred_auth_method = "apikey"
[model_providers.api111]
name = "api111"
base_url = "https://api.key4u.shop/v1"
wire_api = "responses"Start codex
Then navigate to your project directory:
VSCode Extension codex
codex in the VSCode extension marketplace.Frequently Asked Questions
1.
Modified at 2026-03-06 15:34:52