getedgehq Generate Image
Creates images via OpenAI GPT Image 2. Auth runs through the Codex CLI logged in with a ChatGPT account, so generation is covered by the user's Plus subscription. There is no OpenAI API key and no separate per-image API billing.
Before you start
This Skill does not talk to OpenAI directly. It shells out to the Codex CLI,
and that CLI has to already be installed on this machine and already signed in
to a ChatGPT account with an active Plus subscription. Check with codex --version
and run codex login if it is not signed in. There is no API key to paste, and
no separate per-image charge; the images are billed to that subscription.
Without a signed-in Codex CLI nothing here works, and the script fails at the first call rather than producing a file.
Quick start
# from this Skill's own directory, wherever your agent installed it
./scripts/generate-image.sh "a shiba inu wearing sunglasses, studio photo"
Saves to the resolved output folder (see below) as a slugified PNG, e.g.
assets/images/a-shiba-inu-wearing-sunglasses-studio-photo.png.
Workflow
- Turn the user's request into a strong English prompt. Follow the build order and levers in PROMPTING.md (scene → subject → details → invariants → use). Refine vague requests before calling; do not pass a bare one-liner when the asset matters.
- Run the script with the prompt. Optionally pass
--outand--name. - Report the saved path back to the user. For changes, iterate in small single-variable steps and restate the invariants (see PROMPTING.md).
Output location
When --out is not given, the script resolves the folder automatically:
| Condition | Target folder |
|---|---|
./public/ exists (web/app initiative) |
./public/images/ |
| otherwise | ./assets/images/ (created if missing) |
This establishes a consistent assets/images/ convention across projects while
respecting web projects, where images must live under public/ to be served.
Options
| Flag | Effect |
|---|---|
--out <dir> |
Write into this directory instead of the resolved default |
--out <file>.png |
Write to this exact file path |
--name <basename> |
Use this basename instead of slugifying the prompt |
Existing files are never overwritten: the script appends -2, -3, ... instead.
Deliverable naming
These outputs are work assets, so they get short functional names by default.
If an image is a stakeholder deliverable, pass an explicit
--name following the file-naming rule, e.g.
--name "20260612_Hero Banner_v1".
Requirements
codexCLI installed (brew install --cask codex)- Logged in with a ChatGPT account:
codex login(Plus or higher; image generation is not available on Free)
The script checks both and fails with a clear message if either is missing.