GET/v1/tech

Detect technologies, frameworks, and tools used by any website. Wappalyzer-inspired detection.

Starter Plan & Above

🔍 Technology Detection

Identify 28+ technologies across 12 categories. Perfect for competitive analysis, lead generation, and security audits.

Query Parameters

Name	Type	Required	Default	Description
`url`	`string`		-	The URL to analyze for technologies

Try it out

GET /v1/tech

Detect technologies used by any website

URL to analyze

Generated Code

curl "https://api.katsau.com/v1/tech?url=https%3A%2F%2Fvercel.com" \
  -H "Authorization: Bearer YOUR_API_KEY"

Request Example

curl "https://api.katsau.com/v1/tech?url=https://vercel.com" \
  -H "Authorization: Bearer ks_live_your_api_key"

Response

{
  "success": true,
  "data": {
    "url": "https://vercel.com",
    
    "technologies": [
      {
        "name": "Next.js",
        "category": "Web frameworks",
        "confidence": 100,
        "version": null,
        "icon": "https://cdn.katsau.com/icons/nextjs.svg"
      },
      {
        "name": "React",
        "category": "JavaScript frameworks",
        "confidence": 80,
        "version": null,
        "icon": "https://cdn.katsau.com/icons/react.svg"
      },
      {
        "name": "Vercel",
        "category": "Hosting",
        "confidence": 100,
        "version": null,
        "icon": "https://cdn.katsau.com/icons/vercel.svg"
      },
      {
        "name": "Tailwind CSS",
        "category": "UI frameworks",
        "confidence": 85,
        "version": null,
        "icon": "https://cdn.katsau.com/icons/tailwindcss.svg"
      },
      {
        "name": "Google Analytics",
        "category": "Analytics",
        "confidence": 100,
        "version": null,
        "icon": "https://cdn.katsau.com/icons/google-analytics.svg"
      }
    ],
    
    "categories": {
      "Web frameworks": ["Next.js"],
      "JavaScript frameworks": ["React"],
      "Hosting": ["Vercel"],
      "UI frameworks": ["Tailwind CSS"],
      "Analytics": ["Google Analytics"]
    },
    
    "summary": {
      "total_technologies": 5,
      "primary_framework": "Next.js",
      "hosting": "Vercel",
      "has_analytics": true,
      "has_ecommerce": false
    }
  },
  "meta": {
    "request_id": "req_abc123xyz",
    "response_time_ms": 345
  }
}

Detected Categories

Technologies are grouped into the following categories:

JavaScript Frameworks

ReactVue.jsAngularSvelte

Web Frameworks

Next.jsNuxt.js

CMS

WordPressGhostWebflow

E-commerce

ShopifyWooCommerce

UI Frameworks

Tailwind CSSBootstrap

Analytics

Google AnalyticsMixpanelAmplitudeHotjar

Hosting / CDN

VercelNetlifyCloudflareAWS

Customer Support

IntercomCrisp

Payments

StripePayPal

Confidence Scoring

Each detected technology has a confidence score (0-100) based on pattern matching:

Confidence	Meaning
90-100	Multiple strong indicators found
70-89	Good indicators, likely accurate
50-69	Some indicators, possibly inferred
<50	Weak indication, verify manually

Use Cases

•Competitive Analysis: Discover what technologies competitors use
•Lead Generation: Find companies using specific technologies (e.g., all Shopify stores)
•Security Audits: Identify outdated or vulnerable technologies
•Market Research: Track technology adoption trends