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baoyu-skills/skills/baoyu-image-gen/references/codex-image2-fallback.md
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Jim Liu 宝玉 49e9c46ca4 feat(baoyu-image-gen): add codex-cli provider wrapping codex-imagegen 
Expose Codex CLI's built-in image_gen tool through baoyu-image-gen's
standard CLI + batch flow as a dedicated provider. The provider spawns
the bundled scripts/codex-imagegen/main.ts (synced from
packages/baoyu-codex-imagegen/src/) so the skill remains self-contained
and inherits retry, cache, file-lock, and JSONL logging. No
OPENAI_API_KEY required — uses the user's Codex subscription.

New env vars: BAOYU_CODEX_IMAGEGEN_{BIN,CACHE_DIR,TIMEOUT_MS,RETRIES,LOG_FILE}.
Hyphenated provider names now resolve under-scored env vars (e.g.,
BAOYU_IMAGE_GEN_CODEX_CLI_CONCURRENCY). codex-cli is never auto-selected
— pin via --provider or default_provider in EXTEND.md.
2026-05-25 00:18:27 -05:00

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name, description
name description
codex-image2-fallback Fallback behavior when baoyu-image-gen lacks OpenAI API credentials but Codex/native image generation is available

Codex Image2 Fallback

When using baoyu-image-gen with --provider openai --model gpt-image-2, the CLI can fail with:

OPENAI_API_KEY is required. Codex/ChatGPT desktop login does not automatically grant OpenAI Images API access to this script.

This is expected. The openai provider uses the public OpenAI Images API and needs OPENAI_API_KEY. Codex / ChatGPT image2 entitlement is a separate runtime-native path.

Practical fallback pattern

  1. Try baoyu-image-gen when provider credentials are available.
  2. If it fails only because OPENAI_API_KEY is missing, do not leave the user waiting.
  3. Prefer a Codex/native raster backend in this order:
    • Codex runtime native imagegen skill/tool, if available.
    • baoyu-image-gen --provider codex-cli (preferred — wraps the bundled scripts/codex-imagegen/main.ts; the underlying repo-level package lives at packages/baoyu-codex-imagegen/src/main.ts for standalone callers), if codex CLI is installed/logged in.
    • Hermes native image_generate, if available.
  4. Be transparent about reference-image behavior:
    • If the fallback backend accepts references, pass the reference images.
    • If it does not, derive a concise identity-preserving prompt from the references and state that it is a text-description fallback, not strict reference-image editing.
  5. Return the generated media path or structured backend error promptly.

User-facing wording

Use concise wording such as:

The OpenAI API path needs OPENAI_API_KEY; Codex login is a separate image2 backend. I used the available Codex/native image backend instead. Reference images were [passed directly / reconstructed from visual traits].

Avoid implying that baoyu-image-gen --provider openai can use Codex OAuth without a dedicated provider implementation.

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