Use a Codex Skill to Generate Images

Install and use the GetToken ImageGen Skill for Codex image generation with GPT Image 2.5 models.

When using the GetToken relay service, Codex cannot generate images directly through the built-in client ImageGen.

Built-in ImageGen needs a key that can connect directly to the OpenAI Images API. GetToken provides a relay service API key, and that key does not take over the direct ImageGen path inside Codex.

Image generation with the GetToken relay service must use the gettoken-imagegen Skill.

Install It

Open the Stable Image API console, choose macOS or Windows, copy the one-line install command, run it, and restart Codex.

Already installed? Run the same command again to update to the latest version. Your config and task history are preserved. You can also let Codex run <skill>/bin/<platform>/gettoken-imagegen update.

Requirement

When generating images in Codex, image generation tasks must be handled by gettoken-imagegen.

Do not use:

  • Built-in Codex ImageGen
  • Image generation paths that depend on an official OpenAI direct key

Use:

  • gettoken-imagegen Skill
  • GetToken API Key
  • OpenAI-compatible Images API endpoint

Configure the Endpoint

The installer writes the image API key and stable image endpoint into the skill configuration. Do not expose the API key in source code, screenshots, or public commands after installation.

Install Location

The Skill is installed under ~/.agents/skills/gettoken-imagegen. Run the install command on the same machine where Codex runs.

Troubleshooting

Why not use built-in ImageGen directly

Built-in Codex ImageGen requires a key that can connect directly to the OpenAI Images API. When using the GetToken relay service, that direct path does not work, so gettoken-imagegen must handle image generation.

Codex Cannot Find the Skill

Confirm the Skill is installed under ~/.agents/skills/gettoken-imagegen, then restart Codex.

Windows Installation Does Not Work

Confirm that you use the PowerShell install command on native Windows.

Generation Fails

Check:

  1. The image API key is configured.
  2. You can reach the stable image endpoint.
  3. The output directory exists and is writable.

Use CC Switch

CC Switch can import and manage GetToken as a Codex provider.

Troubleshooting

Check sign-in state, API Key, base_url, model catalog, and local config files first.

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Install ItRequirementConfigure the EndpointInstall LocationTroubleshootingWhy not use built-in ImageGen directlyCodex Cannot Find the SkillWindows Installation Does Not WorkGeneration Fails