curl -X POST "https://server.smartlead.ai/api/v1/campaigns/123/leads/456?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "john@example.com",
    "first_name": "John",
    "last_name": "Doe",
    "company_name": "Acme Corp",
    "custom_fields": {
      "job_title": "CTO",
      "department": "Engineering"
    }
  }'

import requests

API_KEY = "YOUR_API_KEY"
campaign_id = 123
lead_id = 456

payload = {
    "email": "john@example.com",
    "first_name": "John",
    "last_name": "Doe",
    "company_name": "Acme Corp",
    "custom_fields": {
        "job_title": "CTO",
        "department": "Engineering"
    }
}

response = requests.post(
    f"https://server.smartlead.ai/api/v1/campaigns/{campaign_id}/leads/{lead_id}",
    params={"api_key": API_KEY},
    json=payload
)

result = response.json()
if result.get('ok'):
    print("Lead updated successfully")

const API_KEY = 'YOUR_API_KEY';
const campaignId = 123;
const leadId = 456;

const payload = {
  email: 'john@example.com',
  first_name: 'John',
  last_name: 'Doe',
  company_name: 'Acme Corp',
  custom_fields: {
    job_title: 'CTO',
    department: 'Engineering'
  }
};

const response = await fetch(
  `https://server.smartlead.ai/api/v1/campaigns/${campaignId}/leads/${leadId}?api_key=${API_KEY}`,
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload)
  }
);

const result = await response.json();
if (result.ok) {
  console.log('Lead updated successfully');
}

{
  "ok": true
}

{
  "message": "Invalid API Key"
}

{
  "ok": false,
  "error": "Invalid request!"
}

{
  "error": "Campaign not found - Invalid campaign_id."
}

{
  "error": "email is required"
}