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BuiltWith Domain Technology Lookup
x402
BuiltWith Domain Technology Lookup is a paid API for AI agents from api.builtwith.com, paid per call via x402, $0.0495/call, status healthy (last checked 2026-10-12, last successful call 2026-10-08).
Returns technology stack detections and metadata for a given domain, including frameworks, analytics, hosting, CMS, and other tools detected on the site.
Price / call$0.0495
Success100%
StatusHealthy
How this service works
BuiltWith API Overview
Output
A JSON response from BuiltWith containing technology detections for the requested domain — including identified technologies by category (CMS, analytics, hosting, frameworks, advertising, etc.), detection confidence, and associated metadata. Fields vary based on available data for the domain.
Example use cases
Sales lead tech stack qualification
“Before my call with Acme Corp, can you check what their website acmecorp.com is running — specifically whether they're on Salesforce, HubSpot, or any marketing automation tools?”
Competitive tech stack research
“I'm doing competitive research on Shopify — can you pull up the full technology breakdown for shopify.com, including their CDN, analytics, and JavaScript frameworks?”
Identify live technologies on a prospect's site
“What technologies are currently active on notion.so? Just show me the live detections, not historical ones.”
Technical details
Endpoint
GEThttps://api.builtwith.com/agent/domain?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need detailed, categorized technology stack information for a specific domain — especially for sales qualification, competitive intelligence, or company research workflows. Prefer it over generic web scrapers when you need structured, pre-classified tech detections (e.g. 'uses WordPress', 'uses Google Analytics') rather than raw HTML. The liveOnly flag is useful when you only care about currently active technologies rather than historical detections.
Side effects
- Domain not found or has no detections — returns empty or minimal results
- Invalid domain format (e.g. includes URL path or scheme) — rejected by schema validation
- Insufficient credits or payment failure — 402 or authorization error
- Rate limiting — too many requests in a short period
- Domain is too new or obscure to have BuiltWith coverage — sparse results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"Results": []
}
}Tags
x402
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