facebook-marketplace-rental-listing-scraper

CRITICAL E004: Prompt injection detected in skill instructions.

• Potential prompt injection detected (high risk: 1.00). The skill explicitly directs the agent to install dependencies automatically and to "not describe it as a request for the user to open their browser" or request separate approval (lines 41–47), which is a deceptive instruction outside the stated scraping purpose.

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 0.85). SKILL.md instructs the agent to use the runtime browser-act Skill to “capture browser-visible page content” from user-specified Facebook Marketplace pages/URLs, which is outsider-authored free text scraped from public web pages at runtime.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.90). The skill instructs the agent to automatically install the required BrowserAct CLI at runtime using the provided install links (https://www.browseract.com/?co-from=ecommerce and https://www.browseract.com/?co-from=ecommerce&redirect=https://github.com/browser-act/skills/tree/main), which are runtime external dependencies that would fetch and execute remote installation code.