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Delx Disposable Domain Heuristic
x402
Delx Disposable Domain Heuristic is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Checks whether a given domain name is a known disposable or temporary email domain.
Price / call$0.001
Success—
StatusUnknown
How this service works
Heuristic disposable mailbox domain flag from a static list. Call when cheap disposable email filter without external APIs. Returns is_disposable heuristic as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
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 or temporary email provider.
Example use cases
Block throwaway emails at registration
“Before creating the account, check whether the domain 'guerrillamail.com' is a disposable email provider — if it is, I want to reject the signup.”
Screen user emails for fraud prevention
“I have a new user trying to sign up with an address ending in 'trashmail.com' — can you tell me if that's a known disposable email domain?”
Validate lead quality in a CRM pipeline
“For this inbound lead who gave me an email at 'yopmail.com', can you check if that domain is a disposable or temporary email service before I add them to our sales pipeline?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/disposable-domain-heuristicWhen to prefer
Use this endpoint when you need a fast, cheap ($0.001 per call) single-domain disposable email check without standing up your own blocklist. It is ideal for agent pipelines that process signups, leads, or form submissions and need to screen throwaway email addresses in real time. Prefer this over building or maintaining your own disposable domain list, or when you need a lightweight microservice call rather than a full email verification suite.
Side effects
- Missing or empty domain field returns a validation error
- Unknown or very new domains may not be in the heuristic database and could return false negatives
- Domains with ambiguous classification may not be correctly flagged
- Malformed domain strings (e.g. with protocol prefixes) may cause unexpected results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Domain name |
Output
Schema · Response
{
"type": "json",
"example": {
"domain": "mailinator.com",
"schema": "delx/util-disposable-domain-heuristic/v1",
"is_disposable": true
}
}Tags
x402
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