# Stable Domains Availability Checker

> Stable Domains Availability Checker is a paid API for AI agents from stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Checks whether a domain name is available for registration and returns its current registration price.

## Facts

- Endpoint: POST https://stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app/api/check
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 1
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stable-domains-availability-checker-d9c6e557
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hHwg5rM1lN8W3omFJVTHe

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 stable-domains-availability-checker-d9c6e557 -d '<json body>'
```

Example prompt: Can you check if 'stabledogs.com' is available to register and tell me what it would cost?

## When to prefer this

Use this endpoint when you need to check a single domain name's availability and current registration price before initiating a purchase, especially in agentic workflows that use x402 micropayment-enabled APIs on the Coinbase ecosystem.

## Known failure modes

- Invalid domain name format returns an error
- Unsupported TLD may return unavailable or error
- Payment of $0.01 USDC required per call via x402 protocol — missing payment causes rejection
- Network or upstream registry timeout may cause delayed or failed response

## How this service works

Check domain availability and current registration price.

## Output

Returns whether the queried domain name is currently available for registration and the current price to register it, likely in USD or USDC.

## Example request

```json
{
 "domain": "testexample.com"
}
```

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stable-domains-availability-checker-d9c6e557/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app](https://www.zero.xyz/host/stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app/llms.txt)