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PennyRail Email Validation
x402
PennyRail Email Validation is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Validates whether a given string is a properly formatted, legitimate email address
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
A JSON object indicating whether the provided input string is a valid email address, likely including validity status and possibly details about format or domain correctness.
Example use cases
Registration form email check
“Before I save this new user signup, can you validate that 'jane_smith@mycompany.org' is a properly formatted, legitimate email address?”
Mailing list cleanup
“I have an address 'not-an-email@@broken..com' that someone submitted — can you verify whether it's a valid email so I know whether to include it in the newsletter send?”
CRM data quality gate
“Before importing this lead into our CRM, please check if 'sales.contact@partner-corp.io' is a valid email address.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/validation.email--validate-emailWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call email validation check without committing to a larger validation service subscription. Particularly suitable for agents that occasionally need to verify a single email address in a pipeline, registration flow, or data-cleaning task and want to pay only for what they use via USDC microtransactions.
Side effects
- Missing or empty input string returns an error
- Non-string input may cause schema validation failure
- Network or service unavailability returns a 5xx error
- Payment failure (x402) if USDC balance is insufficient
- Ambiguous or borderline addresses may return uncertain results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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