Find a person's professional email address by name and company domain, pay-per-call via MPP.
What it does
The Hunter Email Finder endpoint, served through the Locus MPP (Micropayment Protocol) gateway, locates a professional email address for a specific person given their name and a company domain (or company name). It is one of eight Hunter.io endpoints available through this gateway, which also includes domain search, email verification, email/company enrichment, company discovery, combined enrichment, and email count.
This specific endpoint (`/hunter/email-finder`) accepts a POST request with parameters such as `domain` or `company`, `first_name`, `last_name`, `full_name`, or `linkedin_handle`. An optional `max_duration` parameter (3–20 seconds) controls how long the service will spend searching. The endpoint is priced at 13,000 base units of pathUSD (6 decimals), which works out to $0.013 per request, settled on Tempo L2. Payment is handled via the MPP charge intent — each call is a one-shot micropayment.
The gateway is operated by Locus (paywithlocus.com) and proxies requests to the underlying Hunter.io API. Full Hunter API documentation is available at hunter.io/api-documentation/v2, and Locus-specific LLM integration docs are referenced at beta.paywithlocus.com/mpp/hunter.md. Note that the probe returned 404 on HEAD/GET; the endpoint is POST-only, which is consistent with the OpenAPI spec. No response schema examples are provided in the spec.
Capabilities
Use cases
- —Finding a specific person's work email before cold outreach
- —Enriching a CRM contact list with verified email addresses
- —Automating lead generation pipelines that need per-person email discovery
- —Looking up emails via LinkedIn handle when domain is unknown
- —Agent-driven sales prospecting with pay-per-lookup billing
Fit
Best for
- —Sales and outreach teams needing individual email addresses on demand
- —AI agents that need programmatic, pay-per-call email finding without API key management
- —Developers integrating email discovery into automated workflows via micropayments
Not for
- —Bulk email list purchases (this is a per-person lookup, not a bulk export)
- —Free-tier or no-cost email lookups — every call costs $0.013
- —Email marketing compliance or opt-in verification (use the email-verifier endpoint instead)
Quick start
curl -X POST https://hunter.mpp.paywithlocus.com/hunter/email-finder \
-H "Content-Type: application/json" \
-d '{"domain": "stripe.com", "first_name": "John", "last_name": "Collison"}'Example
Request
{
"domain": "stripe.com",
"last_name": "Collison",
"first_name": "John"
}Endpoint
Quality
The OpenAPI spec is well-structured with clear request schemas and pricing metadata for all eight endpoints. However, no response schema or example responses are provided, the probe returned 404 because it only tried HEAD/GET on a POST-only endpoint (so liveness is not confirmed but plausible), and crawled pages yielded no additional documentation.
Warnings
- —Probe returned 404 on HEAD and GET; endpoint is POST-only per the OpenAPI spec, so liveness could not be confirmed via probe alone.
- —No response schema or example responses are documented in the OpenAPI spec.
- —Currency address 0x20c000000000000000000000b9537d11c60e8b50 is assumed to be pathUSD with 6 decimals based on the Tempo/Locus convention; this is not explicitly confirmed in the spec.
- —Crawled pages all returned 404 JSON errors; no supplementary documentation was retrievable from the gateway itself.
Citations
- —Email Finder endpoint accepts domain, company, first_name, last_name, full_name, linkedin_handle, and max_duration parametershttps://hunter.mpp.paywithlocus.com
- —Email Finder is priced at 13000 base units settled via Tempo L2 with charge intenthttps://hunter.mpp.paywithlocus.com
- —Full Hunter API documentation is available at hunter.io/api-documentation/v2https://hunter.io/api-documentation/v2
- —Locus-specific LLM docs referenced at beta.paywithlocus.com/mpp/hunter.mdhttps://beta.paywithlocus.com/mpp/hunter.md