Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add meitu/meitu-skills --skill image-background-replacegit clone --depth 1 https://github.com/meitu/meitu-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/meitu/meitu-skills/image-background-replace)<a href="https://agentmods.dev/skills/meitu/meitu-skills/image-background-replace"><img src="https://agentmods.dev/badge/skills/meitu/meitu-skills/image-background-replace/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/meitu/meitu-skills/image-background-replace"><img src="https://agentmods.dev/badge/skills/meitu/meitu-skills/image-background-replace.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 5 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 7 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 13 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 15 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 21 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium Rogue Agent · line 25 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00092 | $0.01523 |
| Opus 5 | $0.00046 | $0.00762 |
| Sonnet 5 | $0.00018 | $0.00305 |
| Haiku 4.5 | $0.00009 | $0.00152 |
Grade A, and why
image-background-replace scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
图片换背景（image-background-replace）
Overview
对已有图片做整体背景替换/换场景，保留前景主体不变。覆盖商品换场景、人像换背景、宠物换场景、电商白底图、证件照换底色（白/蓝/红）、文字描述任意目标场景的 AI 生成。本工具不能输出透明背景。
API Mapping
- 背景替换：
image_gummy_generate_v45
Dependencies
- meitu-cli:
>=2.0.6（npm install -g meitu-cli@latest） - 凭证：CONFIG AKSK →
meitu tools update；EXEC AKSK → 实际执行（见根CONFIG.md） - 环境变量：
MEITU_OPENAPI_TOOL_TASK_MODE=command
路径别名：
$VISUAL={OPENCLAW_HOME}/workspace/visual/
Core Workflow
Preflight → Execute → Deliver
Preflight
meitu --version≥ 2.0.6（否则npm install -g meitu-cli@latest）- 确认已跑过
meitu tools update（用 CONFIG AKSK） - 当前 AKSK = EXEC，且
MEITU_OPENAPI_TOOL_TASK_MODE=command - 解析 output_dir：openclaw.yaml →
./output/｜else →$VISUAL/output/image-background-replace/；mkdir -p
Execute
触发信号 / 路由规则
| 场景 | 判定关键词 | 路由 |
|---|---|---|
| 整体背景替换 | 换背景、换场景、换底色、证件照换底 | image_gummy_generate_v45 |
决策顺序： 0. 前置拦截：prompt 含"透明"/"透明底"/"透明背景" → 不调用本工具，提示走抠图
- 参数齐全判断：
image_url缺失 → 追问；prompt缺失 → 用默认"白色背景" - 唯一路由：调用
image_gummy_generate_v45
单 API 工具：参数齐全即调用，失败重试 1 次后返回错误；不做跨工具兜底。
参数定义
| 参数 | 类型 | 必填 | 范围 | 默认值 | 说明 |
|---|---|---|---|---|---|
image_url |
STRING | 是 | -- | -- | 图片地址。缺失 → 提示"请提供需要换背景的图片" |
prompt |
STRING | 是 | -- | 白色背景 | 目标背景描述。用户未指定 → 默认"白色背景"并告知可描述具体场景 |
工具调用
meitu image-background-replace \
--skill_name skill_image-background-replace \
--image_url <image_url> \
--prompt "<target_background_description>" \
--json \
--download-dir {output_dir}
错误降级
| 场景 | 处理方式 |
|---|---|
image_url 缺失 |
提示"请提供需要换背景的图片"，不调用 API |
image_url 不可访问 |
直接返回图片链接无效错误，不重试 |
prompt 缺失 |
使用默认值"白色背景" |
| 未检测到前景主体 | 返回错误，提示需包含可识别的前景主体，不重试 |
image_gummy_generate_v45 调用失败 |
重试 1 次，仍失败返回错误 |
| 内容合规拦截 | 直接返回合规提示，不重试 |
| 生成背景与前景不协调 | 建议用户调整 prompt 后重试 |
| 用户同时说"换背景"和"透明底" | 本工具不能输出透明背景，不调用 |
| 视频换背景 | 拒绝，本工具不支持视频 |
Deliver
- 直接使用 Preflight 解析的 output_dir
- 从
downloaded_files[0].saved_path读取已下载文件路径 mv {downloaded_files[0].saved_path} {output_dir}/{YYYY-MM-DD}_{descriptive}_image-background-replace.png
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 128 lines · 92 tokens per session scan A f08368095d50
image-background-replace is a skill published in the GitHub repository meitu/meitu-skills (32 stars, last pushed 11d ago), licensed MIT. It adds 92 tokens to every session and 1,523 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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