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Email Address Validation Check
x402
Email Address Validation Check is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Validates and checks an email address, returning structured data about its validity or deliverability.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.
Output
Returns a JSON object with a 'status' field indicating success, a 'data' object containing email check results, and an 'roi_proof' object showing compression ratio metrics. The core validation result about the email address is nested in the 'data' field.
Example use cases
Pre-send email list hygiene
“Before I run this email campaign, can you verify that user@company.com is a real, deliverable address so I don't waste sends on bad contacts?”
User registration form validation
“Someone just signed up with the email fake123@throwaway.io — can you check if that's a legitimate address before I create their account?”
CRM contact data cleanup
“I have a contact in my CRM with email info@oldcorp.net — can you validate whether that address is still active and reachable?”
Technical details
Endpoint
GEThttps://mcp-gateway.agentdiet.dev/v1/email-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, pay-per-call email validation check via a blockchain-settled micro-payment (USDC on Base) without setting up a subscription. It is well-suited for agents operating in x402/MCP payment ecosystems that need to validate individual email addresses on demand at $0.005 per check.
Side effects
- Missing or malformed 'email' query parameter returns an error
- Invalid email format may return a negative validation result
- Payment failure (402) if USDC balance is insufficient
- Timeout or upstream service unavailability returns a non-OK status
- Querying a non-existent or unreachable domain may return inconclusive results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"status": "ok",
"roi_proof": {
"compression_ratio_pct": 91.4
}
}
}Tags
x402
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