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poster generator
by
Justin Liu
· GitHub ↗
· v1.0.1
· MIT-0
284
Downloads
0
Stars
2
Active Installs
2
Versions
Install in OpenClaw
/install poster-generator
Description
Generate professional marketing posters, social media graphics, and event flyers using AI-driven templates, customizable text, colors, and batch output in PN...
Usage Guidance
This skill plausibly implements a poster generator, but there are some red flags you should act on before installing:
- Metadata mismatch: the registry lists no required binaries, but the docs require Node.js >=18 and npm packages. Treat the docs as authoritative only after you inspect the code.
- Inspect the source: review the GitHub repository (package.json, index/CLI entry, and any postinstall scripts) for network calls, eval/exec usage, or unusual postinstall behavior before running npm install -g.
- Check package.json scripts: watch for postinstall, preinstall, or install scripts that run arbitrary commands with your privileges.
- Run in a sandbox: if you're unsure, run the tool inside a container or VM, or use npx to avoid global installation.
- Watch native modules: canvas/sharp/jimp are native or binary-compiled modules that may require build tools and run native code during install — ensure you trust the package source.
- Verify the claim of 'local processing': search the code for axios/fetch/http calls to confirm whether assets or data are sent to external servers.
- Avoid providing secrets: the skill does not need API keys for basic features, so do not supply credentials unless you confirm they are necessary and trustworthy.
- Use standard safety checks: run `npm audit`, check maintainer reputation, read recent commits, and prefer installing from an official, well-maintained package or verified repository.
If you can provide the repository/package.json or the package code, I can scan the scripts and dependencies for risky install-time behavior or network calls to give a higher-confidence assessment.
Capability Analysis
Type: OpenClaw Skill
Name: poster-generator
Version: 1.0.1
The bundle contains metadata and documentation for an AI-powered poster generation tool. The files (skill.md, readme.md, and _meta.json) describe a legitimate utility for creating marketing materials using libraries like canvas and sharp. There is no evidence of malicious code, data exfiltration, or harmful prompt injection; the instructions provided to the AI agent are strictly aligned with the tool's stated purpose. While the documentation includes a promotional link to an 'Official Support Partner' on Xianyu, this appears to be a legitimate support channel rather than a security threat.
Capability Assessment
Purpose & Capability
The skill's name and documentation describe a Node.js-based poster generator (templates, canvas/sharp/jimp, npm CLI). However the registry metadata lists no required binaries or env vars. That mismatch is an internal inconsistency: a legitimate Node-based skill would normally declare Node/npm as a requirement or include an install spec.
Instruction Scope
SKILL.md instructions stay on-topic (generate posters, templates, fonts, batch runs) and do not explicitly instruct reading unrelated secrets or system files. It recommends cloning a GitHub repo and running npm install, installing system fonts (sudo apt-get), and using axios for network operations — the docs claim 'local processing' but axios implies the code can perform network requests depending on implementation. No explicit exfiltration steps are present, but the skill gives the agent discretion to fetch remote assets.
Install Mechanism
There is no formal install spec in the registry (instruction-only), but the README tells users to npm install -g or git clone from GitHub. Installing npm packages (canvas, sharp, jimp, axios) is common for this functionality, but native modules (canvas, sharp) run build/postinstall scripts and may require system libraries and compilers. Because the skill pulls code from an external GitHub/npm source at install time, review package.json and postinstall scripts before installing.
Credentials
The skill declares no required credentials or env vars (reasonable for offline poster generation). The docs do suggest setting NODE_OPTIONS and using sudo to install fonts or npm -g which require elevated privileges — those are not secrets but are privileged actions. No API keys are requested, but axios in dependencies could be used to fetch remote assets if the implementation does so.
Persistence & Privilege
The skill is not marked always:true and doesn't request special agent-wide privileges. It instructs creating a local config file (.postergenrc.json) which is normal. It does not claim to modify other skills or global agent settings.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install poster-generator - After installation, invoke the skill by name or use
/poster-generator - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.1
- Added official support and consulting partner information, including contact details and services, in both English and Chinese.
- No changes to features, usage, dependencies, or technical documentation.
- The skill now offers an official channel for technical support, template customization, integration, and training.
v1.0.0
Poster Generator Skill 1.0.0 – Initial Release
- Launches an AI-powered tool for generating marketing posters, social media graphics, event flyers, and more.
- Offers template-based design, smart text rendering, image composition, automated color schemes, and support for multiple output formats (PNG, JPG, PDF, SVG).
- Provides batch generation and AI-assisted design suggestions.
- Includes both CLI and agent integration guides, with multilingual documentation (English & 中文).
- Processes all data locally for enhanced privacy; open source and no API key required for basic features.
Metadata
Frequently Asked Questions
What is poster generator?
Generate professional marketing posters, social media graphics, and event flyers using AI-driven templates, customizable text, colors, and batch output in PN... It is an AI Agent Skill for Claude Code / OpenClaw, with 284 downloads so far.
How do I install poster generator?
Run "/install poster-generator" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is poster generator free?
Yes, poster generator is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does poster generator support?
poster generator is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created poster generator?
It is built and maintained by Justin Liu (@zhenstaff); the current version is v1.0.1.
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