# SiteCheck Company Records – Similarweb Domain Intelligence

> SiteCheck Company Records – Similarweb Domain Intelligence is a paid API for AI agents from api.companyrecords-api.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-24).

Returns a comprehensive Similarweb traffic and audience profile for any domain, including ranks, visit metrics, traffic sources, top countries, demographics, search keywords, and similar sites.

## Facts

- Endpoint: GET https://api.companyrecords-api.workers.dev/api/b2b/similarweb?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-company-records-similarweb-domain-intelligence-49396668
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TQp9s7JGADbOGmawNpALx

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 sitecheck-company-records-similarweb-domain-intelligence-49396668
```

Example prompt: Can you pull up the Similarweb traffic overview for notion.so — I want to see monthly visits, top traffic sources, bounce rate, and which countries send the most visitors?

## When to prefer this

Use this endpoint when you need a fast, single-call lookup of Similarweb public traffic data for a domain without managing your own Similarweb API subscription or scraping. Ideal for competitive intelligence, lead enrichment pipelines, due diligence workflows, and audience research where Similarweb's public estimate data is sufficient. Prefer this over direct Similarweb API when cost-per-call billing via x402 is more convenient than a monthly subscription, or when you need a simple REST call in an agentic workflow.

## Known failure modes

- Domain not found or has no Similarweb data (low-traffic or brand-new sites may return empty/null fields)
- Invalid or malformed domain string returns a 400 or validation error
- Stealth proxy rate limit or block by Similarweb returns a 429 or 503
- Data reflects last full calendar month only — real-time or current-day data is not available
- Paid upstream data may lag by several weeks for some metrics

## How this service works

Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.

## Output

Returns a structured JSON object containing: global, country, and category traffic ranks; monthly visit count and month-over-month change; 3-month visit trend; bounce rate; pages per visit; average visit duration; traffic source breakdown (direct, referral, search, social, email, display); top countries by share; age distribution; gender split; organic vs paid search ratio; top organic and paid keywords; top social networks; list of similar/competing sites; and company facts about the domain owner.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Website domain, e.g. google.com, shopify.com"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-company-records-similarweb-domain-intelligence-49396668/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.companyrecords-api.workers.dev](https://www.zero.xyz/host/api.companyrecords-api.workers.dev/llms.txt)