# Liquid Leads Business Lookup by Phone or Domain

> Liquid Leads Business Lookup by Phone or Domain is a paid API for AI agents from api.liquidagent.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Identifies the business behind a US phone number or website domain, returning name, address, email, contact, category, and website signals

## Facts

- Endpoint: GET https://api.liquidagent.ai/v1/leads/lookup?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/liquid-leads-business-lookup-by-phone-or-domain-ca87b75a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nUL48J6unnT2mbOSw4Rs0

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 liquid-leads-business-lookup-by-phone-or-domain-ca87b75a
```

Example prompt: Can you find out what business is behind the phone number (404) 355-2001 — I need their name, email, address, and website if possible.

## When to prefer this

Use this endpoint when you need to identify or enrich a business record from just a US phone number or a website domain — particularly useful for sales prospecting, lead enrichment, vendor vetting, or reverse-lookup workflows where you need email, address, and contact details in a single call. Prefer it over generic WHOIS or public search tools when you need structured, confidence-scored business data with email quality grades and website signals.

## Known failure modes

- No business found for the given phone or domain — found:false with count:0
- Invalid phone number format not matching any US number pattern
- Domain not crawlable or no associated business listing found
- Ambiguous input where both phone and domain are omitted
- Payment failure via x402 protocol resulting in 402 response before data is returned

## How this service works

Who is this phone number or website? Give a US phone number or a website and get the local business behind it: name, address, category, the best email graded A/B/C, a contact name when the email shows one, socials and buying signals. A website only matches when it carries the business's own phone number, so the answer is never a guess. $0.01 per lookup that finds a business; no match, no charge. USDC on Base or Arc.

## Output

A JSON object with a businesses array containing: business name, category and group, verified email with quality grade and source URL, phone number, full mailing address, inferred contact name, listing confidence score and last-updated date, website URL with live/closed status, and website signals including tech stack, copyright year, online booking platforms, and hiring status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "phone": {
       "type": "string",
       "description": "A US phone number, any format: 4043552001, (404) 355-2001, +14043552001"
      },
      "domain": {
       "type": "string",
       "description": "Or a website: example.com or https://www.example.com/contact (one of phone or domain)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "const": "json"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "found": true,
  "query": {
   "phone": "+14043552001"
  },
  "priceUsd": 0.01,
  "businesses": [
   {
    "id": "08f2...",
    "name": "Midtown Family Dental",
    "email": {
     "grade": "A",
     "source": "website",
     "address": "jsmith@midtownfamilydental.com",
     "foundOn": "https://midtownfamilydental.com/contact",
     "freeMail": false,
     "ownDomain": true,
     "roleInbox": false
    },
    "group": "Dental clinic",
    "phone": "+14045550100",
    "address": {
     "zip": "30309",
     "city": "Atlanta",
     "state": "GA",
     "county": "Fulton",
     "source": "public listing",
     "street": "123 Peachtree St NE"
    },
    "contact": {
     "basis": "read from the email address",
     "lastName": "Smith",
     "firstName": "J."
    },
    "listing": {
     "sources": 2,
     "confidence": 0.98,
     "lastUpdated": "2026-09-14",
     "possiblyClosed": false
    },
    "signals": {
     "hiring": false,
     "payments": [],
     "sitePlatform": "wordpress",
     "onlineBooking": [
      "zocdoc"
     ],
     "siteCopyrightYear": 2025
    },
    "website": "https://midtownfamilydental.com",
    "category": "General dentistry",
    "websiteProof": "their phone number and street address are on the site",
    "websiteStatus": "live"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/liquid-leads-business-lookup-by-phone-or-domain-ca87b75a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.liquidagent.ai](https://www.zero.xyz/host/api.liquidagent.ai/llms.txt)