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在 OpenClaw 中安装
/install signus-font-signature
功能描述
Generate font-based signature images via Signus API and return image files for chat delivery. Use when asked for font signatures (not AI websocket handwritte...
安全使用建议
This skill appears coherent and implements exactly what it says: it POSTs to https://api.signus.ai, downloads and/or extracts image files, and stores them under ~/.openclaw/media/signatures-font/. Before installing: 1) confirm you trust api.signus.ai and are comfortable with the skill writing files to your home media folder; 2) be prepared to run npm install in the skill folder (it will fetch adm-zip from the npm registry); 3) note the fallback endpoint (/users/me/...) may require an existing session — do not embed secrets in payloads; 4) review the included script yourself if you need higher assurance (it is short and readable).
功能分析
Type: OpenClaw Skill
Name: signus-font-signature
Version: 1.0.1
The skill contains a path traversal vulnerability in 'scripts/generate_font_signatures.js' because the 'name' input is insufficiently sanitized (only replacing spaces) before being used to construct the 'outputDir' path in the user's home directory. This could allow an attacker to write files to arbitrary locations. Additionally, the script downloads and extracts ZIP archives from a remote API (api.signus.ai) using 'adm-zip', which is a high-risk operation if the remote service is compromised or returns a specially crafted archive.
能力评估
Purpose & Capability
The name/description match the included script and SKILL.md. Required actions (HTTP POST to signus endpoints, unzip, save images) align with the stated purpose. No unrelated binaries, env vars, or config paths are requested.
Instruction Scope
The SKILL.md correctly instructs running the included Node.js script with a JSON payload. The script creates an output directory under the user's home (~/.openclaw/media/signatures-font/), posts to fixed signus endpoints, extracts ZIPs, and writes image files. These behaviors are expected for this task, but the skill does perform network access and write files to the user's home directory (media storage) — both are within scope but worth noting.
Install Mechanism
This is an instruction-only skill with a package.json and one dependency (adm-zip). SKILL.md requires running npm install in the skill folder; adm-zip is fetched from the public npm registry (traceable). No arbitrary downloads or extract-from-unknown-URL steps are present.
Credentials
The skill declares no required environment variables or credentials and the code does not read env vars. It uses public signus endpoints; a fallback endpoint (/users/me/...) may rely on implicit session/auth in some deployments, which the SKILL.md explicitly notes.
Persistence & Privilege
always is false and the skill does not modify other skills or system-wide settings. It writes only into its own media folder under ~/.openclaw/media/signatures-font/. It does not request permanent elevated privileges.
如何使用
- 确保已安装 OpenClaw（本地或 Docker 部署）
- 在对话框中输入安装命令：
/install signus-font-signature - 安装完成后，直接呼叫该 Skill 的名称或使用
/signus-font-signature触发 - 根据 Skill 的参数说明提供必要输入，即可获得结构化输出
版本历史
v1.0.1
Remove shell unzip, add explicit runtime/auth docs, improve security clarity
v1.0.0
Initial release: font signature generation + image export
元数据
常见问题
Signus Font Signature 是什么？
Generate font-based signature images via Signus API and return image files for chat delivery. Use when asked for font signatures (not AI websocket handwritte... 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件，目前累计下载 221 次。
如何安装 Signus Font Signature？
在 OpenClaw 或 Claude Code 对话框中运行命令「/install signus-font-signature」即可一键安装，无需额外配置。
Signus Font Signature 是免费的吗？
是的，Signus Font Signature 完全免费，采用 MIT-0 许可证，可自由下载、安装和使用。
Signus Font Signature 支持哪些平台？
Signus Font Signature 跨平台运行，可在任意部署了 OpenClaw / Claude Code 的环境中使用（cross-platform）。
谁开发了 Signus Font Signature？
由 signus-ai（@signus-ai）开发并维护，当前版本 v1.0.1。
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