An AI agent skill that generates high-contrast dark posters and tutorial covers featuring authentic handwritten marker typography and minimalist design.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install blackboard
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install blackboard using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Blackboard Dark Poster Generator?
The blackboard skill is a sophisticated visual generation tool designed to create high-impact, dark-themed posters and covers. It specializes in a specific aesthetic often used for professional tutorials: a deep charcoal background, thin white borders, and vibrant handwritten marker text. By utilizing this skill within Openclaw Skills, developers and content creators can automate the production of vertical 9:16 assets that look hand-drawn yet professional.
This skill excels at translating user keywords into structured visual layouts, ensuring that brand names, main headlines, and supplemental tags are balanced perfectly. It simulates real-world textures, including broad-tip marker strokes and natural hand-drawn wobbles, to provide a tactile feel that stands out in digital feeds.
Blackboard Dark Poster Generator Use Cases
- Creating 'nanny-level' tutorial covers for technical documentation and social media.
- Generating high-contrast branding posters for presentations or developer updates.
- Designing minimalist thumbnails with authentic chalk or marker typography.
- Producing vertical advertising assets for mobile-first platforms.
How Blackboard Dark Poster Generator Works
- The skill analyzes user input to extract key themes, brand names, and desired accent colors.
- It builds a structured composition based on a five-zone layout (Brand, Headline, Subheads, Supplemental, and Tag).
- It constructs a detailed prompt for the image_synthesize tool, specifying hexadecimal colors like #1a1a1a (charcoal) and #ADFF2F (lime green).
- The image is generated at a 2K resolution with a strict 9:16 aspect ratio.
- The final asset is saved to the workspace and delivered to the user along with the generation prompt for future iterations.
Blackboard Dark Poster Generator Setup
To use this skill, ensure your AI agent has access to the image_synthesize tool. Simply add the skill definition to your Openclaw Skills library. No complex CLI setup is required, as the skill leverages standard image generation protocols.
# Example usage within an agent session:
# "Generate a blackboard style poster for a Python tutorial"
Blackboard Dark Poster Generator Data Schema & Taxonomy
The blackboard skill manages data using a structured taxonomy to ensure consistency across generated assets:
| Feature | Specification |
|---|---|
| File Format | PNG |
| Aspect Ratio | 9:16 Vertical |
| Storage Path | /workspace/[subject]_poster.png |
| Resolution | 2K |
| Background | Dark Charcoal Grey (#1a1a1a) |
| Primary Fonts | Bold Handwritten Marker Style |
Blackboard Dark Poster Generator Advanced Features
- Support for four distinct composition variants: Minimalist Large Text, Dual Brand Comparison, Number + Tag highlights, and Person + Theme layouts.
- High-fidelity texture simulation including marker ink imperfections and broad-tip weight variations.
- Automatic English prompt generation provided alongside the image to allow for manual prompt engineering and refinement.
- Integrated branding zones that allow for the placement of custom icons and secondary brand names within Openclaw Skills workflows.
SKILL.md
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