411data.io Person Search & Enrichment

x402

411data.io Person Search & Enrichment is a paid API for AI agents from 411data.io, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).

Finds phones (including mobile), emails, and addresses for a person by name, phone number, or address — billed only on a successful match.

Price / call$0.5

Seller volume →—

Success—

StatusUnknown

How this service works

Person search: find phones (including mobile), emails, and addresses for a person by name, phone reverse lookup, or address. Bill-on-match.

Output

Returns a matched person record containing one or more phone numbers (including mobile), email addresses, and physical addresses tied to the queried individual or phone number. The response is only billed when a match is found. No result is returned (and no charge incurred) when no match exists.

Example use cases

Locate contact info for a lead

“I have a sales lead — Michael Thompson, based in Chicago, IL. Can you find his phone number and email so I can reach out?”

Reverse lookup an unknown caller

“I got a call from 415-555-0198 and I don't know who it is — can you look up who owns that number and give me their name and address?”

Verify address for a known contact

“I need to confirm the current mailing address for Sarah Nguyen in San Diego, CA — can you look her up and tell me what addresses are on file?”

Technical details

Endpoint

POSThttps://411data.io/api/v1/enrich/person

When to prefer

Choose this endpoint when you need direct contact data (phone, email, address) for a specific individual and want to pay only on a successful match. It is ideal for B2C lead enrichment, skip tracing, or verifying contact details for a known person. Prefer it over general web-research endpoints when structured directory data is sufficient and speed matters. Use the reverse phone sibling endpoint if you already have the phone number and need to identify the owner.

Side effects

No match found — person not in directory, no charge incurred
Ambiguous name with no state/city qualifier returns multiple or zero results
Phone number not recognized or not in reverse-lookup database
Invalid or malformed input (missing name fields or invalid phone format)
Rate limiting or API authentication failure

Input

Schema · Request body

Field	Type	Description
city	string
name	string
phone	string
street	string
zipcode	string
last_name	string
first_name	string
state_code	string
middle_name	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": {
      "people": [
        {
          "name": "John Smith",
          "emails": [
            {
              "score": 88,
              "address": "john@example.com"
            }
          ],
          "phones": [
            {
              "label": "mobile",
              "score": 92,
              "number": "(412) 555-0198"
            }
          ]
        }
      ],
      "metadata": {
        "query_mode": "name_location",
        "result_count": 1
      }
    },
    "input": {
      "name": "John Smith",
      "zipcode": "15213",
      "state_code": "PA"
    },
    "billed": true,
    "vendor": "stub",
    "matched": true,
    "endpoint": "enrich/person",
    "cache_hit": false
  }
}

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How this service works

Person search: find phones (including mobile), emails, and addresses for a person by name, phone reverse lookup, or address. Bill-on-match.

Output

Example use cases

Locate contact info for a lead

“I have a sales lead — Michael Thompson, based in Chicago, IL. Can you find his phone number and email so I can reach out?”

Reverse lookup an unknown caller

“I got a call from 415-555-0198 and I don't know who it is — can you look up who owns that number and give me their name and address?”

Verify address for a known contact

“I need to confirm the current mailing address for Sarah Nguyen in San Diego, CA — can you look her up and tell me what addresses are on file?”

Technical details

Endpoint

POSThttps://411data.io/api/v1/enrich/person

When to prefer

Side effects

No match found — person not in directory, no charge incurred
Ambiguous name with no state/city qualifier returns multiple or zero results
Phone number not recognized or not in reverse-lookup database
Invalid or malformed input (missing name fields or invalid phone format)
Rate limiting or API authentication failure

Input

Schema · Request body

Field	Type	Description
city	string
name	string
phone	string
street	string
zipcode	string
last_name	string
first_name	string
state_code	string
middle_name	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "data": {
      "people": [
        {
          "name": "John Smith",
          "emails": [
            {
              "score": 88,
              "address": "john@example.com"
            }
          ],
          "phones": [
            {
              "label": "mobile",
              "score": 92,
              "number": "(412) 555-0198"
            }
          ]
        }
      ],
      "metadata": {
        "query_mode": "name_location",
        "result_count": 1
      }
    },
    "input": {
      "name": "John Smith",
      "zipcode": "15213",
      "state_code": "PA"
    },
    "billed": true,
    "vendor": "stub",
    "matched": true,
    "endpoint": "enrich/person",
    "cache_hit": false
  }
}