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RelayShield Email Breach Check
x402
RelayShield Email Breach Check is a paid API for AI agents from api.relayshield.net, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-31).
Checks whether a given email address has appeared in known data breaches, returning breach names, domains, dates, and exposed data classes
Price / call$0.1
Success—
StatusUnknown
How this service works
Identity security, threat monitoring and intelligence for the agentic AI era. TAP verifier for agentic commerce, MCP Proxy Firewall for AI agents, and threat intelligence APIs backed by 725K indicators across 129 monitored marketplaces.
Output
A JSON object containing the queried email address, an array of breach records (each with breach name, domain, breach date, verification status, and list of exposed data classes such as passwords or email addresses), and a total breach count integer indicating how many breaches the email appears in.
Example use cases
Personal email security audit
“Check if my email address jane.smith@gmail.com has been caught up in any data breaches — I want to know which breaches, what got exposed like passwords or personal info, and the dates they happened.”
User account compromise check
“One of our users flagged their account as potentially compromised — can you run a breach check on their email alex.torres@company.com and tell me if it appears in any verified breaches with what data classes were leaked?”
Onboarding security screening
“Before we approve this new contractor, check if their email m.johnson@freelancer.io has been in any known data breaches so we can assess the security risk.”
Technical details
Endpoint
POSThttps://api.relayshield.net/v1/payg/breach?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-use, programmatic lookup of email breach history with structured output including breach names, dates, domains, and data class details. It is ideal for one-off checks, agent-driven security workflows, or building lightweight security screening into onboarding flows without requiring a subscription to a larger identity monitoring service.
Side effects
- Invalid or malformed email address returns an error response
- Email not found in any breach database returns an empty breaches array with breach_count of 0
- Network timeout or upstream breach database unavailability causes a 5xx error
- Rate limiting may occur if the endpoint is called too frequently
- Payment failure via x402 protocol prevents the request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | Email address to check |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"data": {
"email": "user@example.com",
"breaches": [
{
"name": "ExampleBreach",
"domain": "example.com",
"breach_date": "2023-06-01",
"is_verified": true,
"data_classes": [
"Passwords",
"Email addresses"
]
}
],
"breach_count": 3
}
}
}Tags
x402
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