🤖 AI Content Detector — GPTZero, ZeroGPT & Originality.ai Scraper

Check any text for AI-generated content across multiple detection engines. Get AI probability scores, human probability estimates, perplexity metrics, and sentence-level analysis — all in one API call.

✅ Works with GPTZero (free + API), ZeroGPT (free), and Originality.ai (API) ✅ Supports raw text input AND URL scraping ✅ Structured JSON output for easy integration ✅ No browser overhead — fast HTTP-based detection

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🎯 Use Cases

🎓 Academic Integrity

• Verify student submissions for AI-generated content
• Check research papers and essays before submission
• Monitor AI usage in academic environments

📰 Content Verification

• Verify blog posts and articles for AI authorship
• Ensure content originality for publishing platforms
• Fact-check AI-generated vs human-written content

🔍 SEO & Content Marketing

• Verify content teams are producing original work
• Check competitor content for AI generation
• Ensure AI-assisted content meets quality thresholds

⚖️ Legal & Compliance

• Verify legal documents for AI involvement
• Monitor regulatory submissions
• Audit AI usage in professional content

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📋 Input Parameters

Field	Type	Required	Description
textContent	string	No*	Raw text to analyze for AI generation
targetUrl	string	No*	URL to scrape and analyze
sources	string[]	No	Detection engines: gptzero, zerogpt, originality
gptzeroApiKey	string	No	GPTZero API key for higher rate limits
originalityApiKey	string	No	Required for Originality.ai
maxItems	integer	No	Max items to process (1-100, default 5)

At least one of textContent or targetUrl must be provided.

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📦 Output Schema

Each dataset item contains:

{
  "type": "ai_detection",
  "inputType": "text",
  "textPreview": "The quick brown fox...",
  "textLength": 1500,
  "results": [
    {
      "engine": "GPTZero",
      "status": "success",
      "aiProbability": 95,
      "humanProbability": 5,
      "confidence": "highly_confident",
      "perplexity": 12.4,
      "burstiness": 8.2
    },
    {
      "engine": "ZeroGPT",
      "status": "success",
      "aiProbability": 85,
      "humanProbability": 15
    }
  ],
  "verdict": {
    "averageAIProbability": 90,
    "verdict": "LIKELY_AI",
    "enginesUsed": ["GPTZero", "ZeroGPT"],
    "enginesFailed": []
  }
}

Field Reference

Field	Type	Description
results[].engine	string	Detection engine name
results[].status	string	success, error, or skipped
results[].aiProbability	number	AI generation probability (0-100)
results[].humanProbability	number	Human writing probability (0-100)
results[].confidence	string	Confidence level of the detection
results[].perplexity	number	Text perplexity score (lower = more likely AI)
results[].burstiness	number	Burstiness score (variation in sentence length)
verdict.verdict	string	Combined: LIKELY_AI, UNCERTAIN, LIKELY_HUMAN

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🔧 Technical Details

• Runtime: Node.js 22 (no browser needed — faster, cheaper)
• Dependencies: apify, crawlee, axios
• API endpoints: GPTZero v2, ZeroGPT, Originality.ai v1
• Timeout: 30s per API call
• Input limits: Text truncated to 5,000 chars for API calls

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💰 Pricing

Plan	Price	Description
Per result	$0.03	Each successful detection (across all engines)
Actor start	$0.01	One-time charge per run

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❓ FAQ

Which engines work without an API key?
GPTZero and ZeroGPT work without API keys. Originality.ai requires an API key.

Can I scan a full website?
Yes — provide a targetUrl and the actor will scrape the page content and analyze it.

How accurate is the detection?
Each engine uses different models. We recommend using multiple engines (especially GPTZero + Originality.ai for the most reliable results).

Is this faster than browser-based detectors?
Yes — this uses direct HTTP API calls, making it 5-10x faster than Playwright/Puppeteer-based solutions. No browser overhead.

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📝 Notes

• AI detection is probabilistic, not deterministic — results should be used as indicators, not proof
• Detection accuracy varies by text length (500+ characters recommended)
• Combining multiple engines improves reliability
• Free versions of APIs may have rate limits