Hunter Email Verifier via Locus x402

x402

Hunter Email Verifier via Locus x402 is a paid API for AI agents from hunter.x402.paywithlocus.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Verifies whether a given email address is valid and deliverable using Hunter's email verification service, billed per-call via x402 micropayments.

Price / call$0.008

Seller volume →—

Success—

StatusUnknown

How this service works

Locus public pay-per-use API

Output

Returns a JSON object with verification data about the submitted email address, including deliverability status and validity signals, along with payment settlement details showing the USDC amount charged and a request ID for tracking.

Example use cases

Pre-send email list cleanup

“I have a lead email address — sarah.jones@techstartup.io — can you check if it's a real, deliverable email before I send my cold outreach campaign?”

CRM data quality check

“Before I import this contact into my CRM, verify whether michael.brown@globalventures.com is a valid email address that won't bounce.”

Inbound lead validation

“Someone just filled out our signup form with the email dev.team@opensourcefoundation.org — can you verify it's a real address before we send the welcome email?”

Technical details

Endpoint

POSThttps://hunter.x402.paywithlocus.com/hunter/email-verifier

When to prefer

Use this endpoint when you need per-email verification billed as a micropayment via x402/USDC, especially in agent workflows where you want pay-as-you-go pricing without a monthly Hunter.io subscription. Ideal for validating individual email addresses before outreach, CRM import, or lead scoring. Choose Hunter's verifier specifically when you trust Hunter.io's data quality for B2B email domains.

Side effects

Invalid or malformed email input returns an error
Email domain does not exist or is unreachable, resulting in unverifiable status
Payment failure or insufficient USDC balance prevents call completion
Rate limiting or service unavailability from underlying Hunter.io API
Catch-all domains may return inconclusive verification results

Input

Schema · Request body

Field	Type	Description
email	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": {},
    "payment": {
      "scheme": "exact",
      "settledUsdc": "0.001000",
      "authorizedMaxUsdc": "0.001000"
    },
    "request": {
      "id": "00000000-0000-4000-8000-000000000000",
      "statusUrl": "/requests/00000000-0000-4000-8000-000000000000"
    },
    "success": true
  }
}

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Example use cases

Pre-send email list cleanup

“I have a lead email address — sarah.jones@techstartup.io — can you check if it's a real, deliverable email before I send my cold outreach campaign?”

CRM data quality check

“Before I import this contact into my CRM, verify whether michael.brown@globalventures.com is a valid email address that won't bounce.”

Inbound lead validation

“Someone just filled out our signup form with the email dev.team@opensourcefoundation.org — can you verify it's a real address before we send the welcome email?”

Technical details

Endpoint

POSThttps://hunter.x402.paywithlocus.com/hunter/email-verifier

When to prefer

Side effects

Invalid or malformed email input returns an error
Email domain does not exist or is unreachable, resulting in unverifiable status
Payment failure or insufficient USDC balance prevents call completion
Rate limiting or service unavailability from underlying Hunter.io API
Catch-all domains may return inconclusive verification results

Input

Schema · Request body

Field	Type	Description
email	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": {},
    "payment": {
      "scheme": "exact",
      "settledUsdc": "0.001000",
      "authorizedMaxUsdc": "0.001000"
    },
    "request": {
      "id": "00000000-0000-4000-8000-000000000000",
      "statusUrl": "/requests/00000000-0000-4000-8000-000000000000"
    },
    "success": true
  }
}