Note: This endpoint is currently in beta. The API response format and behavior may change in future releases.

​
Overview

The Find Phone API uses Sixtyfour AI to discover phone numbers for leads. It extracts contact information from lead data and returns enriched results with phone numbers.

​
Endpoint

POST https://api.sixtyfour.ai/find-phone

​
Authentication

  • Required: API Key in header
  • Header: x-api-key: YOUR_API_KEY

​
Request Format

​
Request Body

{
  "lead": {
    "name": "John Doe",
    "company": "Example Corp",
    "linkedin_url": "https://linkedin.com/in/johndoe",
    "domain": "example.com",
    "email": "john@example.com"
  }
}

​
Required Fields

  • lead (object): Lead information object

​
Optional Lead Fields

  • name (string): Full name of the person
  • company (string): Company name
  • linkedin_url (string): LinkedIn profile URL
  • domain (string): Company website domain
  • email (string): Email address
  • Any other lead data fields

​
Response Format

​
Successful Response (200 OK)

{
  "name": "John Doe",
  "company": "Example Corp",
  "linkedin_url": "https://linkedin.com/in/johndoe",
  "phone": "+1 555-123-4567"
}

​
Multiple Phones Response

{
  "name": "John Doe", 
  "company": "Example Corp",
  "phone": [
    {
      "number": "+1 555-123-4567",
      "region": "US"
    },
    {
      "number": "+1 555-987-6543", 
      "region": "US"
    }
  ]
}

​
No Phone Found Response

{
  "name": "John Doe",
  "company": "Example Corp", 
  "phone": ""
}

​
Error Responses

​
400 Bad Request

{
  "detail": "Lead data is required"
}

​
401 Unauthorized

{
  "detail": "Invalid API key"
}

​
429 Rate Limit Exceeded

{
  "detail": "Rate limit exceeded"
}

​
500 Internal Server Error

{
  "detail": "Internal server error message"
}

​
Example Usage

​
cURL Example

curl -X POST "https://api.sixtyfour.ai/find-phone" \
  -H "Content-Type: application/json" \
  -H "x-api-key: YOUR_API_KEY" \
  -d '{
    "lead": {
      "name": "Sarah Johnson",
      "company": "TechCorp Inc",
      "linkedin_url": "https://linkedin.com/in/sarahjohnson"
    }
  }'

​
Python Example

import requests

url = "https://api.sixtyfour.ai/find-phone"
headers = {
    "Content-Type": "application/json",
    "x-api-key": "YOUR_API_KEY"
}
data = {
    "lead": {
        "name": "Sarah Johnson",
        "company": "TechCorp Inc", 
        "linkedin_url": "https://linkedin.com/in/sarahjohnson"
    }
}

response = requests.post(url, headers=headers, json=data)
result = response.json()
print(f"Phone found: {result.get('phone', 'Not found')}")

​
JavaScript Example

const response = await fetch('https://api.sixtyfour.ai/find-phone', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': 'YOUR_API_KEY'
  },
  body: JSON.stringify({
    lead: {
      name: "Sarah Johnson",
      company: "TechCorp Inc",
      linkedin_url: "https://linkedin.com/in/sarahjohnson"
    }
  })
});

const result = await response.json();
console.log('Phone found:', result.phone);

​
Bulk Phone Finding

​
Dataframe Enrichment

You can also use the bulk enrichment endpoint for processing multiple leads: 
POST https://api.sixtyfour.ai/enrich-dataframe
Request: 
{
  "csv_data": "name,company,linkedin_url\nJohn Doe,Example Corp,https://linkedin.com/in/johndoe\nJane Smith,Tech Inc,https://linkedin.com/in/janesmith",
  "enrichment_type": "phone"
}
Response: 
{
  "job_id": "uuid-here"
}
Check status with: 
GET https://api.sixtyfour.ai/job-status/{job_id}

​
Best Practices

​
1. Provide Rich Lead Data

Include as much information as possible for better results:
  • Full name (required for Sixtyfour AI)
  • Company name and domain
  • LinkedIn URL
  • Any existing contact information

​
2. Handle Different Response Formats

Phone numbers can be returned as:
  • String: "+1 555-123-4567"
  • Object array: [{"number": "+1 555-123-4567", "region": "US"}]
  • Empty string: "" (when no phone found)

​
3. Error Handling

Always implement proper error handling: 
try:
    response = requests.post(url, headers=headers, json=data)
    response.raise_for_status()
    result = response.json()
    
    phone = result.get('phone', '')
    if phone:
        print(f"Phone found: {phone}")
    else:
        print("No phone number found")
        
except requests.exceptions.RequestException as e:
    print(f"API request failed: {e}")

​
Rate Limits

  • Rate limits are applied per API key
  • Check your plan for specific limits
  • Use bulk processing for large datasets

​
Setup Requirements

  • SIXTYFOUR_API_KEY environment variable must be set
  • Valid Sixtyfour AI subscription with phone enrichment access

​
Phone Number Formats

  • International format preferred: +1 555-123-4567
  • Regional codes included when available
  • Multiple numbers returned as array when found

​
Limitations

  • Requires first name and last name for Sixtyfour AI processing
  • Sixtyfour AI API timeout: 3 minutes maximum
  • Phone availability depends on Sixtyfour AI’s database coverage
  • Some regions may have limited phone number availability