plasmate

What This Skill Does

Plasmate is a high-performance, headless browser engine optimized specifically for AI agents. Unlike traditional browsers that render full DOM trees, Plasmate compiles raw HTML into a Semantic Object Model (SOM). This process transforms web pages into a clean, structured JSON format that eliminates unnecessary styling and script overhead. By reducing the data footprint by up to 800x compared to raw HTML, Plasmate provides AI agents with the essential information they need—regions, interactive elements with stable IDs, and structured metadata—without the bloat. It is 50x faster than Chrome, making it the premier choice for large-scale data harvesting and rapid agentic workflows.

Installation

To install this skill, run the following command in your terminal: clawhub install openclaw/skills/skills/builder-nc/plasmate

Ensure you have Rust installed to build from source via cargo install plasmate, or use the provided install script for an automated deployment. Once installed, ensure your agent has access to run the server binary in the background for either AWP or CDP mode.

Use Cases

Plasmate excels in scenarios where latency and context window management are critical. Use it for:

• Large-scale web scraping: Efficiently extract structured data across thousands of URLs without memory exhaustion.
• Agentic data harvesting: Quickly gather content from news sites, e-commerce stores, or databases using its optimized SOM output.
• Automated form completion: Utilize stable ref IDs to interact with complex web forms programmatically.
• Token-constrained workflows: Use Plasmate when working with LLMs that have limited context windows, as the SOM structure preserves only relevant information, significantly reducing token consumption.

Example Prompts

1. "Use Plasmate to navigate to https://news.example.com and extract the main headline and summary into a JSON format."
2. "Plasmate, fetch the product page at https://store.example.com, identify the 'add to cart' button via the interactive element map, and perform a click action."
3. "Search for the latest research papers on https://scholar.example.com, extract all structured metadata, and scroll through the results to collect five page summaries."

Tips & Limitations

• AWP vs. CDP: Always default to the Agent Web Protocol (AWP) for maximum performance and native SOM integration. Only fallback to CDP if your specific workflow mandates legacy Puppeteer or Playwright compatibility.
• Local Execution: Plasmate processes everything locally. This is a privacy-first tool; no data is sent to a third-party cloud.
• Visual Rendering: Plasmate does not perform pixel-level rendering. If your task requires visual verification, screenshots, or debugging complex JS animations that rely on visual CSS layout, use a standard browser tool instead.