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Agy image

Skill wjb127/claude-skills/agy-image/skills/agy-image

Generate images via Antigravity CLI (agy) using Gemini's generate_image tool. Google OAuth — no API key needed. Antigravity CLI(agy)의 내장 generate_image 도구로 Gemini 이미지 생성. Google OAuth 인증으로 API 키 불필요. Usage: /agy-image cherry blossom hanok, /agy-image --out public/images space cat, /agy-image -n 3 seoul nightFrom its SKILL.md

Install
npx -y skills add wjb127/claude-skills --skill agy-image

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SKILL.md

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agy-image — AI Image Generation via Antigravity CLI (Gemini)

Generate images using Google Gemini's generate_image tool through Antigravity CLI (agy). No API key required — uses Google OAuth (Gemini Pro subscription) authentication.

Antigravity CLI(agy)의 내장 generate_image 도구로 Gemini 이미지를 생성한다. API 키 불필요 — Google OAuth(Gemini 유료 구독) 인증 사용.

How it works / 동작 원리

User prompt → Claude Code (/agy-image)
  → agy --print (Google OAuth auto-managed)
    → built-in generate_image tool (Gemini)
      → saved to specified path

Step 1 — Verify agy CLI / agy CLI 확인

~/.local/bin/agy --help 2>/dev/null | head -3 || echo "NOT_FOUND"

If NOT_FOUND, stop:

"Antigravity CLI 없음. https://antigravity.dev 에서 설치 후 로그인해."

Step 2 — Parse Arguments / 인자 파싱

Extract from $ARGUMENTS:

FlagValuesDefaultDescription
--outdirectory pathproject rootSave location / 저장 위치
-n1–41Number of images / 생성 장수

Remaining text → image prompt / 나머지 텍스트 → 이미지 프롬프트

If prompt is empty, ask via AskUserQuestion:

"어떤 이미지를 생성할까? 프롬프트를 입력해줘."

Step 3 — Determine Save Path / 저장 경로 결정

_PROJECT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
_OUT_DIR="${_PROJECT_ROOT}"
_TIMESTAMP=$(date +%Y%m%d-%H%M%S)
_FILENAME="agy-image-${_TIMESTAMP}"
  • If --out specified, use that path / --out 지정 시 해당 경로 사용
  • Single image: agy-image-<timestamp>.png
  • Multiple (-n > 1): agy-image-<timestamp>-1.png, -2.png, ...
  • Never overwrite existing files / 기존 파일 덮어쓰기 금지

Step 4 — Generate Image / 이미지 생성

Single image (default)

~/.local/bin/agy --print \
  "Use the generate_image tool to generate an image with this prompt: '${_PROMPT}'. Save the generated image to '${_OUT_DIR}/${_FILENAME}.png'. After saving, print the file path and file size in bytes." \
  --print-timeout 120s \
  2>&1

Multiple images (-n > 1)

for i in $(seq 1 ${_N}); do
  ~/.local/bin/agy --print \
    "Use the generate_image tool to generate an image with this prompt: '${_PROMPT}'. Save the generated image to '${_OUT_DIR}/${_FILENAME}-${i}.png'. After saving, print the file path and file size in bytes." \
    --print-timeout 120s \
    2>&1
done

timeout: 120000ms (2 min) per image

Step 5 — Verify & Display / 검증 및 표시

# 파일 존재 + 크기 확인 (1KB 미만이면 실패)
ls -la ${_OUT_DIR}/${_FILENAME}*.png
find ${_OUT_DIR} -name "${_FILENAME}*.png" -size -1k -exec echo "FAILED: {}" \;

Output format:

═══════════════════════════════════════════════
IMAGE GENERATED (Gemini) / 이미지 생성 완료
═══════════════════════════════════════════════
Prompt: <prompt used>
Count: <n>
Auth: Google OAuth (Gemini)
───────────────────────────────────────────────
<saved file path(s) + size>
═══════════════════════════════════════════════

Always display the generated image using the Read tool. 생성된 이미지를 반드시 Read 도구로 표시한다.

Step 6 — Follow-up / 후속 안내

  • "Run /agy-image again to generate another image."
  • For Next.js projects: suggest moving to public/images/ if needed.

Error Handling / 에러 처리

ErrorMessage
Auth expired"Google OAuth 만료. 터미널에서 agy 실행 후 재로그인."
Timeout (>2min)"생성 시간 초과. 프롬프트를 단순화해서 재시도."
Rate limit"API 호출 제한. 잠시 후 재시도."
File < 1KB"이미지 생성 실패. agy 출력 확인 후 재시도."
NOT_FOUND"agy CLI 없음. ~/.local/bin/agy 확인."

Rules / 규칙

  • Always use the Read tool to display generated images / 생성된 이미지는 반드시 Read로 표시
  • Never overwrite existing files — always use timestamped filenames / 기존 파일 덮어쓰기 금지
  • Always use full path ~/.local/bin/agy to avoid IDE version conflict / IDE 버전 충돌 방지를 위해 항상 풀 경로 사용
  • Verify file size after generation (< 1KB = failed) / 생성 후 파일 크기 검증

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