Check whether an email address appears in known data breaches
Check whether an email address appears in known data breaches. Returns breach count, source names, dates, and exposed data types (passwords, emails, etc). Call before trusting a new user identity or granting elevated access.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
235 msmedian answer time
$0.1listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.relayshield.net/v1/payg/breach
| Category | Everything else |
|---|---|
| Provider host | api.relayshield.net |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.1 | 235 ms |
Example input (from the provider)
{
"body": {
"email": "user@example.com"
},
"bodyType": "json",
"discoverable": true,
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"email": {
"description": "Email address to check",
"type": "string"
}
},
"required": [
"email"
],
"type": "object"
}
},
"required": [
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"breach_count": {
"type": "integer"
},
"breaches": {
"items": {
"properties": {
"breach_date": {
"type": "string"
},
"data_classes": {
"items": {
"type": "string"
},
"type": "array"
},
"domain": {
"type": "string"
},
"is_verified": {
"type": "boolean"
},
"name": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"email": {
"type": "string"
}
},
"type": "object"
},
"ok": {
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}