Test the Website Categorization API from Zyla API Hub with Postman

This is the Postman walkthrough for the Website Categorization API on Zyla API Hub. Postman is optional: the contract is still HTTP. Auth is Authorization: Bearer YOUR_API_KEY. Subscription + quota, not pay-per-call. First API: 7-day trial or 50 requests. No Free Plan.

Get a key at zylalabs.com/register, subscribe to the listing, then import the curls.

URL request in Postman

New → HTTP. Method POST. URL = the Hub URL path. Authorization → Bearer Token = your Hub key. Body → x-www-form-urlencoded → key url, value https://yahoo.com (the documented example). Do not add other keys.

curl -s -X POST "https://zylalabs.com/api/12/website-categorization-api/48/url" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "url=https://yahoo.com"

In Postman, Import → Raw text → paste that curl. Send. You should see success: true and a domain.categories array.

Stored Hub example for https://yahoo.com:

{
  "domain": {
    "categories": [
      {"confidence": 0.8140320181846619, "name": "/Internet & Telecom/Other", "IAB19-18": "Internet Technology"},
      {"confidence": 0.28268808126449585, "name": "/News/Other", "IAB12": "News"},
      {"confidence": 0.24724437296390533, "name": "/Internet & Telecom/Search Engines/Other", "IAB19-35": "Web Search"}
    ],
    "social_media": {
      "facebook_url": "https://facebook.com/YahooNews",
      "instagram_url": "https://instagram.com/yahoonews"
    }
  },
  "success": true
}

Assert on domain.categories[0].name = /Internet & Telecom/Other if you are checking this fixture.

Email request

Duplicate the request. Change the URL to the email path. Replace the body key with email = [email protected].

curl -s -X POST "https://zylalabs.com/api/12/website-categorization-api/1989/email" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "[email protected]"

Stored Hub example:

{
  "domain": {
    "categories": [
      {"confidence": 0.9019761085510254, "name": "/Internet & Telecom/Email & Messaging/Email"}
    ],
    "social_media": null
  },
  "success": true
}

What to save in the collection

Two requests, one environment variable for the Bearer token. Do not store a real key in the collection JSON you share. MCP for agents is https://mcp.zylalabs.com/mcp — Postman stays on the REST paths above.