# Klazify – Full API Reference for LLMs

> The Bloomberg Terminal of the Web. A web intelligence platform for website classification, company discovery, technology detection, and traffic analytics.

## Authentication

All API requests require a Bearer token in the Authorization header:

```
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
```

Get your API key at https://klazify.com/register

## Base URL

https://www.klazify.com/api

---

## 1. Categorization API

POST /api/categorize

Classify any website into 620+ IAB v3 categories with confidence scores.

Request:
```json
{"url": "https://apple.com"}
```

Response:
```json
{
  "domain": {
    "categories": [
      {"confidence": 0.92, "name": "/Computers & Electronics/Consumer Electronics", "IAB3_id": "IAB-632-596"},
      {"confidence": 0.89, "name": "/Internet & Telecom/Mobile & Wireless/Mobile Phones"}
    ],
    "social_media": {
      "facebook_url": "https://facebook.com/apple",
      "twitter_url": "https://twitter.com/apple",
      "linkedin_url": "https://linkedin.com/company/apple",
      "instagram_url": "https://instagram.com/apple"
    },
    "logo_url": "https://klazify.s3.amazonaws.com/..."
  },
  "success": true
}
```

## 2. Real-Time Classification

POST /api/real_time_categorization

Classifies URLs in real-time using AI. Always fetches fresh content.

Request: `{"url": "https://example.com"}`

Response: Same as categorize but with `updated_at` timestamp.

## 3. IAB Categories API

POST /api/domain_iab_categories

Returns IAB Content Taxonomy v1 and v3 category mappings.

Response:
```json
{
  "domain": {
    "categories": [
      {
        "confidence": 1,
        "name": "/Technology & Computing",
        "IAB19": "Technology & Computing"
      }
    ],
    "domain_url": "https://example.com"
  },
  "success": true
}
```

Note: IAB taxonomy IDs (e.g. `IAB19`, `IAB-324-JLBCU7`) are sibling keys inside each `categories[]` item — there is no `domain.IAB_categories` object.

## 4. Company Data API

POST /api/domain_company

Returns company intelligence for any domain.

Response:
```json
{
  "domain": {"domain_url": "https://example.com"},
  "success": true,
  "objects": {
    "company": {
      "name": "Example Inc",
      "city": "San Francisco",
      "stateCode": "CA",
      "countryCode": "US",
      "employeesRange": "1K-5K",
      "revenue": 50000000,
      "tags": ["SaaS", "Technology", "B2B"],
      "tech": ["salesforce", "stripe", "aws"]
    }
  }
}
```

Fields: name, city, stateCode, countryCode, employeesRange, revenue, raised, tags, tech

## 5. Tech Stack API

POST /api/domain_tech

Detects 150+ technologies used by a website.

Response:
```json
{
  "objects": {
    "company": {
      "tech": ["google_tag_manager", "salesforce", "mongodb", "react", "cloudflare", "stripe"]
    }
  }
}
```

## 6. Logo API

POST /api/domain_logo

Returns a hosted logo URL for any domain.

Response:
```json
{
  "domain": {
    "domain_url": "https://example.com",
    "logo_url": "https://klazify.s3.amazonaws.com/..."
  },
  "success": true
}
```

## 7. Domain Expiration API

POST /api/domain_expiration

Returns domain registration and expiration data.

Response:
```json
{
  "domain_registration_data": {
    "domain_age_date": "1997-09-15",
    "domain_age_days_ago": 10400,
    "domain_expiration_date": "2028-09-14",
    "domain_expiration_days_left": 920
  }
}
```

## 8. Social Media API

POST /api/domain_social_media

Extracts social media links from any domain.

Response:
```json
{
  "domain": {
    "social_media": {
      "facebook_url": "https://facebook.com/...",
      "twitter_url": "https://twitter.com/...",
      "instagram_url": "https://instagram.com/...",
      "linkedin_url": "https://linkedin.com/...",
      "youtube_url": "https://youtube.com/...",
      "github_url": "https://github.com/...",
      "pinterest_url": null,
      "medium_url": null
    }
  }
}
```

## 9. Similar Domains API

POST /api/similar_domain

Finds competitors and similar websites.

Response:
```json
{
  "domain": {
    "domain_url": "https://example.com",
    "similar_domains": [
      "http://competitor1.com",
      "http://competitor2.com",
      "http://related-site.com"
    ]
  },
  "success": true
}
```

Note: similar domains live under `domain.similar_domains` — there is no top-level `similar` array.

## 10. Traffic Intelligence API

POST /api/domain_traffic_intelligence

Returns traffic analytics for any website.

Response:
```json
{
  "traffic_intelligence": {
    "global_rank": 765,
    "country_rank": {"country_code": "US", "rank": 196},
    "category_rank": {"category": "News_and_Media", "rank": 18},
    "monthly_visits": {"2025-10": 93188768, "2025-11": 91195650},
    "engagement": {
      "bounce_rate": "0.607",
      "pages_per_visit": "1.66",
      "time_on_site_seconds": "67.7"
    },
    "traffic_sources": {
      "direct": 0.554,
      "search": 0.358,
      "referrals": 0.051,
      "social": 0.034,
      "mail": 0.001,
      "paid": 0.002
    },
    "top_countries": [
      {"country_code": "US", "share": 0.86},
      {"country_code": "CA", "share": 0.025}
    ]
  }
}
```

---

## Classification Taxonomy

Klazify uses the IAB Content Taxonomy v3, the global standard for ad-tech contextual targeting and brand safety. 620+ categories organized in a hierarchical tree.

Top-level categories include: Arts & Entertainment, Automotive, Business, Careers, Education, Family & Parenting, Food & Drink, Health & Fitness, Hobbies & Interests, Home & Garden, Law & Government, News, Personal Finance, Pets, Real Estate, Science, Shopping, Society, Sports, Style & Fashion, Technology & Computing, Travel.

## Pricing

- Starter: $39.99/month (500 API calls)
- Pro: $89/month (2,000 API calls)
- Advanced: $399/month (10,000 API calls)
- Plus: $790/month (25,000 API calls)
- Business: $1,390/month (50,000 API calls)
- Scale: $2,370/month (200,000 API calls)
- Premium: $3,950/month (1,000,000 API calls)
- Enterprise: Custom pricing

All plans include a 7-day free trial. Annual billing saves 2 months.

## Contact

- Website: https://klazify.com
- Email: hello@klazify.com
- Company: Klazify Inc., 651 N Broad St Suite 206, Middletown, DE 19709, USA