Classify

/classify reads a website and assigns it an IAB Content Taxonomy category. Everything sits under data.classification, the same key /enrich uses:

Category and subcategory: for example Business › Business Software
Descriptions: a short description, a one-line tagline and a longer summary
Stock tickers and ISINs: for public companies

Static pages are read with a fast fetch. A real browser is used only when the page needs JavaScript to show its content. It’s the cheapest way to answer “what kind of business is this?”, for example to score leads against your ideal customer profile.

Example requests

curl "https://api.prefetch.io/classify?url=https://stripe.com" \
  -H "X-API-Key: $PREFETCH_API_KEY"

const res = await fetch("https://api.prefetch.io/classify?url=https://stripe.com", {
  headers: { "X-API-Key": process.env.PREFETCH_API_KEY },
});
const { data } = await res.json();
const { category, subcategory } = data.classification;
console.log(`${category} > ${subcategory}`); // "Business > Business Software"

import os, requests

r = requests.get(
    "https://api.prefetch.io/classify",
    params={"url": "https://stripe.com"},
    headers={"X-API-Key": os.environ["PREFETCH_API_KEY"]},
)
classification = r.json()["data"]["classification"]
print(f"{classification['category']} > {classification['subcategory']}")

Example response

A real response for stripe.com, shortened where marked with …:

{
  "success": true,
  "data": {
    "domain": "stripe.com",
    "url": "https://stripe.com/",
    "classification": {
      "iab_id": "IAB3-4",
      "iab_parent_id": "IAB3",
      "category": "Business",
      "subcategory": "Business Software",
      "description": "A payments and financial-technology platform that lets businesses accept and process online and in-person payments, manage billing and subscriptions, issue cards, and move money across borders via APIs and prebuilt tools. …",
      "tagline_description": "A developer-first payments and financial infrastructure platform for online and in-person commerce.",
      "long_description": "Stripe is a global technology company that provides infrastructure for online payments and financial services. …",
      "stock_tickers": [],
      "isins": []
    }
  },
  "meta": {
    "requestId": "a3f2c1d4-7b6e-4f2a-9c1d-8e3f2a1b4c5d",
    "durationMs": 196
  }
}

IAB IDs

iab_id and iab_parent_id use the IAB Content Taxonomy 1.0 ID format. The parent is a category, and the child adds a hyphen and a number:

IAB3: the parent category (Business)
IAB3-4: the subcategory (Business Software)

Common parent categories include IAB3 (Business), IAB4 (Careers), IAB13 (Personal Finance) and IAB19 (Technology & Computing).

Enrich a company

Industry, brand and company details in one call. 12 credits.

API reference

Every parameter, and a playground to try it.

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Agents and MCP

Company data

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Platform

Going to production

Example requests

Example response

IAB IDs

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Enrich a company

API reference

​Example requests

​Example response

​IAB IDs

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Enrich a company

API reference

Example requests

Example response

IAB IDs

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