# BuiltWith Domain Lookup

> BuiltWith Domain Lookup is a paid API for AI agents from BuiltWith at builtwith.mpp.paywithlocus.com, paid per call via MPP, $0.055/call, status unknown (last checked 2026-10-09, last successful call 2026-07-10).

Returns the full technology stack and metadata detected on a given domain, including live and historical technologies, attributes, and relationships.

## Facts

- Endpoint: POST https://builtwith.mpp.paywithlocus.com/builtwith/domain?utm_source=zero.xyz
- Price: $0.055/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-09
- Last successful call: 2026-07-10
- Success rate: 100% of calls made through Zero
- Activations on Zero: 1
- Provider: BuiltWith
- Docs: https://api.builtwith.com
- Website: https://builtwith.com
- Tags: technology-profiling, tech-stack, competitive-intel, domains, data
- Canonical page: https://www.zero.xyz/c/builtwith-domain-ef264013
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L04Dn53TYx7k-vBQHJ427

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability builtwith-domain-ef264013 -d '<json body>'
```

Example prompt: Look up the full technology stack for stripe.com using BuiltWith — only show me live technologies and leave out any PII.

## When to prefer this

Use this endpoint when you need a comprehensive, detailed technology profile of a specific domain — including historical detection data, technology attributes, and metadata. Prefer this over the Free Summary endpoint when you need full detail rather than a quick overview, and over the Lists endpoint when you want all technologies on one domain rather than all domains using one technology.

## Known failure modes

- Invalid or non-existent domain returns empty or error response
- Domain with no BuiltWith data returns minimal or empty technology list
- Malformed LOOKUP parameter causes API error
- Invalid date format in FDRANGE or LDRANGE causes filtering failure
- Rate limiting or quota exceeded returns HTTP 429 or similar error

## How this service works

Full technology profile for a domain — tech stack, metadata, spend history, social links, company info, and detection dates across all subdomains and paths.

## Output

A detailed breakdown of technologies detected on the queried domain, including technology names, categories, first/last detected dates, and optional attributes and metadata. The response can be filtered to live-only technologies, exclude PII such as emails and phone numbers, and hide dead links or text descriptions.

## Example request

```json
{
 "NOPII": "1",
 "LOOKUP": "example.com",
 "LIVEONLY": "1"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "LOOKUP"
 ],
 "properties": {
  "NOPII": {
   "type": "string",
   "description": "Set to \"1\" to exclude PII (emails, phones, names)"
  },
  "HIDEDL": {
   "type": "string",
   "description": "Set to \"1\" to hide dead links"
  },
  "LOOKUP": {
   "type": "string",
   "description": "Domain to look up (e.g. \"example.com\")"
  },
  "NOATTR": {
   "type": "string",
   "description": "Set to \"1\" to exclude attributes"
  },
  "NOMETA": {
   "type": "string",
   "description": "Set to \"1\" to exclude meta data"
  },
  "FDRANGE": {
   "type": "string",
   "description": "Filter by first detected date range (e.g. \"2023-01-01,2024-01-01\")"
  },
  "LDRANGE": {
   "type": "string",
   "description": "Filter by last detected date range"
  },
  "HIDETEXT": {
   "type": "string",
   "description": "Set to \"1\" to hide text descriptions"
  },
  "LIVEONLY": {
   "type": "string",
   "description": "Set to \"1\" to return only live technologies"
  }
 },
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/builtwith-domain-ef264013/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from builtwith.mpp.paywithlocus.com](https://www.zero.xyz/host/builtwith.mpp.paywithlocus.com/llms.txt)