Agy image
Claude Code skills built while shipping real client websites — image generation without API keys, per-project memory, evidence-producing QA.
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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 night
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 $ARGUMENTS:
| Flag | Values | Default | Description |
|---|---|---|---|
--out | directory path | project root | Save location / 저장 위치 |
-n | 1–4 | 1 | Number of images / 생성 장수 |
Remaining text → image prompt / 나머지 텍스트 → 이미지 프롬프트
If prompt is empty, ask via AskUserQuestion:
"어떤 이미지를 생성할까? 프롬프트를 입력해줘."
Step 3 — Determine Save Path / 저장 경로 결정
_PROJECT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || pwd)
_OUT_DIR="${_PROJECT_ROOT}"
_TIMESTAMP=$(date +%Y%m%d-%H%M%S)
_FILENAME="agy-image-${_TIMESTAMP}"
- If
--outspecified, use that path /--out지정 시 해당 경로 사용 - Single image:
agy-image-<timestamp>.png - Multiple (
-n > 1):agy-image-<timestamp>-1.png,-2.png, ... - Never overwrite existing files / 기존 파일 덮어쓰기 금지
Step 4 — Generate Image / 이미지 생성
Single image (default)
~/.local/bin/agy --print \
"Use the generate_image tool to generate an image with this prompt: '${_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-imageagain to generate another image." - For Next.js projects: suggest moving to
public/images/if needed.
Error Handling / 에러 처리
| Error | Message |
|---|---|
| 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/agyto 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