# BuiltWith Company-to-URL Lookup via Locus x402

> BuiltWith Company-to-URL Lookup via Locus x402 is a paid API for AI agents from builtwith.x402.paywithlocus.com, paid per call via x402, $0.055/call, status unknown (last checked 2026-09-15).

Looks up the website URLs associated with a given company name using BuiltWith's database of 100M+ websites.

## Facts

- Endpoint: POST https://builtwith.x402.paywithlocus.com/builtwith/company-to-url
- Price: $0.055/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/builtwith-company-to-url-lookup-via-locus-x402-1ca6b981
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JMq54Xeo-5-dOXaGA5wXF

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-company-to-url-lookup-via-locus-x402-1ca6b981 -d '<json body>'
```

Example prompt: Find the website URLs associated with the company 'Stripe' — return up to 5 results.

## When to prefer this

Use this endpoint when you have a company name and need to resolve it to one or more website URLs or domains, especially for lead enrichment, competitive research, or building a web presence profile. Prefer this over manual search when you need programmatic, structured results from a database of 100M+ websites. This is the right choice when you know the company name but not its exact web properties.

## Known failure modes

- Company name not found in BuiltWith database — returns empty data object
- Ambiguous company name matches multiple unrelated companies — results may include irrelevant domains
- Payment failure or insufficient USDC balance — request rejected before execution
- AMOUNT parameter missing or invalid — may default to a system limit or return an error
- Rate limiting or upstream BuiltWith API unavailability — request times out or returns error

## How this service works

Technology profiling for websites — detect tech stacks, find sites using specific technologies, discover domain relationships, trends, and competitive intelligence across 100M+ websites.

## Output

Returns a JSON object with a data field containing website URLs and domain information associated with the queried company name, along with payment settlement details and a request status URL for tracking.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "AMOUNT": {
   "type": "string"
  },
  "COMPANY": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "payment": {
   "scheme": "exact",
   "settledUsdc": "0.001000",
   "authorizedMaxUsdc": "0.001000"
  },
  "request": {
   "id": "00000000-0000-4000-8000-000000000000",
   "statusUrl": "/requests/00000000-0000-4000-8000-000000000000"
  },
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/builtwith-company-to-url-lookup-via-locus-x402-1ca6b981/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from builtwith.x402.paywithlocus.com](https://www.zero.xyz/host/builtwith.x402.paywithlocus.com/llms.txt)