# Delx Commerce — Disposable Domain Heuristic

> Delx Commerce — Disposable Domain Heuristic is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Checks whether a given domain name is a disposable/temporary email provider using heuristic detection

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/disposable-domain-heuristic?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-disposable-domain-heuristic-8daa5a6a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_91bdHll9ECPU_CnuXMx-o

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 delx-commerce-disposable-domain-heuristic-8daa5a6a -d '<json body>'
```

Example prompt: Can you check whether mailinator.com is a disposable email domain — I want to know if I should reject signups using it?

## When to prefer this

Use this endpoint when you need a lightweight, pay-per-call disposable email domain check with no signup required and verifiable on-chain payment via x402. Prefer it over free open-source lists when you need a maintained heuristic service and want agent-native micropayment integration. At $0.001 USDC per call it is cost-effective for both high-volume screening and one-off checks.

## Known failure modes

- Missing or empty 'domain' field returns a validation error
- Unrecognized or very new disposable domains may return false negatives (is_disposable: false) if not yet in heuristic database
- Legitimate domains misidentified as disposable (false positives) may occur for obscure mail providers
- Payment failure via x402 results in 402 response before heuristic is run
- Malformed domain strings (e.g. with spaces or invalid TLDs) may produce unexpected results

## How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

## Output

Returns a JSON object containing the queried domain, a schema identifier ('delx/util-disposable-domain-heuristic/v1'), and a boolean 'is_disposable' field indicating whether the domain is classified as a disposable/temporary email provider.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "domain": "mailinator.com",
  "schema": "delx/util-disposable-domain-heuristic/v1",
  "is_disposable": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-disposable-domain-heuristic-8daa5a6a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)