api.builtwith.com agent domain

https://api.builtwith.com/agent/domain

payable

Return BuiltWith technology detections and metadata for one domain. Useful for company research, stack analysis, competitive intelligence, and sales qualification.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.

Price: $0.05
Network: base
Pay to: 0x1937E2d648b8f07A03429AE35f28C4942A756C94
Spec dialect: v2 (declares x402Version 2)
Transport: PAYMENT-REQUIRED header
HTTP method: GET
Response latency: 336 ms
Payment options: 1 usable of 1
Last checked: 2026-08-10T09:09:42.822Z (1d ago)
Category: search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.builtwith.com%2Fagent%2Fdomain"