# DomainHelp Domain Availability

> DomainHelp Domain Availability is a paid API for AI agents from app.domainhelp.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-31).

Checks whether a domain name is available for registration, returning a tri-state result (available, taken, or unknown)

## Facts

- Endpoint: POST https://app.domainhelp.com/api/v1/domain-availability?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/domainhelp-domain-availability-07fc895d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FozlX7Y5wwUGTF9AumroQ

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 domainhelp-domain-availability-07fc895d -d '<json body>'
```

Example prompt: Can you check if 'morningbloomcoffee.com' is available to register?

## When to prefer this

Use this endpoint when you need a fast, low-cost tri-state domain availability signal (available / taken / unknown) before committing to registration or exploring alternatives. Prefer it over WHOIS-heavy lookups when you only need availability status, not full registrant data. The sibling RDAP/WHOIS endpoint on the same platform is better when you also need DNS records, registrant identity, or DomainSure reputation scoring.

## Known failure modes

- Domain TLD not supported — returns unknown state
- Network timeout from upstream registry lookup
- Invalid domain format in request — returns error
- Registry temporarily unavailable — indeterminate result returned
- Rate limit exceeded for high-volume queries

## How this service works

Tri-state domain registration availability intelligence

## Output

A tri-state availability result for the queried domain indicating whether it is available for registration, already taken/registered, or the status is unknown/indeterminate. Useful for routing next steps such as proceeding to purchase or exploring alternative names.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/domainhelp-domain-availability-07fc895d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.domainhelp.com](https://www.zero.xyz/host/app.domainhelp.com/llms.txt)