# x402-toolbox Domain Check

> x402-toolbox Domain Check is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).

Checks whether a given domain name is available for registration or already taken

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/network/domain-check?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-domain-check-0fc53e99
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vAd_FoqPxXtttn5pIZQkq

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 x402-toolbox-domain-check-0fc53e99
```

Example prompt: Can you check if 'coolstartup.io' is available to register right now?

## When to prefer this

Choose this endpoint when you need a low-cost, no-signup domain availability check paid per-call via USDC on Base (x402 protocol). Ideal for AI agents that need to verify domain status programmatically without managing API keys or subscriptions. Best for spot checks rather than bulk domain sweeps.

## Known failure modes

- Missing or malformed domain input returns an error response
- Payment failure (insufficient USDC balance) blocks the call before lookup
- Ambiguous or unsupported TLD may return incomplete results
- Network timeout from the Cloudflare Worker environment
- Upstream WHOIS or registry lookup failure returning stale or unavailable data

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object indicating whether the domain check succeeded (ok: true/false) and whether payment was accepted (paid: true/false), along with the domain availability result for the queried name.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-domain-check-0fc53e99/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)