# ClawFetch Domain Availability Bulk Checker

> ClawFetch Domain Availability Bulk Checker is a paid API for AI agents from api.clawfetch.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Checks live WHOIS availability for a list of domain names in one call, returning a per-domain available true/false result.

## Facts

- Endpoint: POST https://api.clawfetch.ai/domains/check
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clawfetch-domain-availability-bulk-checker-b33c8a95
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RxlO_sR4i-sifVkFY0ufb

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 clawfetch-domain-availability-bulk-checker-b33c8a95 -d '<json body>'
```

Example prompt: Check if these domains are available: morningbloom.com, morningbloom.io, morningbloom.co, morningbloom.ai, and morningbloom.app — I want to know which ones are free to register.

## When to prefer this

Choose this endpoint when you need to check availability for multiple domains in a single API call rather than querying one domain at a time. It is ideal for brand screening, startup naming workflows, or anti-squatting audits where you have a shortlist of candidate domains across various TLDs. Prefer this over single-domain WHOIS tools when efficiency matters and you want structured true/false results rather than raw WHOIS text.

## Known failure modes

- Invalid domain format — malformed domain strings may return errors or be skipped
- WHOIS rate limiting — very large batches may trigger throttling on upstream WHOIS servers
- TLD not supported — exotic or new TLDs may lack WHOIS coverage and return inconclusive results
- Network timeouts — live WHOIS lookups may time out for slow-responding registries
- Payment failure — x402 micropayment not processed results in 402 rejection before lookup

## How this service works

Bulk domain name availability lookup via live WHOIS: check many domains across many TLDs in one call and get a per-domain available true/false. Useful for naming, brand screening, and squatting checks.

## Output

A per-domain response indicating whether each submitted domain name is available (true) or taken (false), derived from live WHOIS data. The agent receives a structured list mapping each domain to its availability status in a single response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domains": {
   "type": "array",
   "items": {
    "type": "string",
    "description": "Domain name to check"
   },
   "description": "List of domain names to check availability for"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clawfetch-domain-availability-bulk-checker-b33c8a95/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.clawfetch.ai](https://www.zero.xyz/host/api.clawfetch.ai/llms.txt)