Create lead
Create a single lead in the workspace. Returns 409 if a lead with the same email already exists.
curl -X POST "https://api.sendkit.ai/v1/leads" \
-H "Content-Type: application/json" \
-H "X-Api-Key: YOUR_API_KEY" \
-d '{
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phone": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
}
}'
import requests
import json
url = "https://api.sendkit.ai/v1/leads"
headers = {
"Content-Type": "application/json",
"X-Api-Key": "YOUR_API_KEY"
}
data = {
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phone": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
}
}
response = requests.post(url, headers=headers, json=data)
print(response.json())
const response = await fetch("https://api.sendkit.ai/v1/leads", {
method: "POST",
headers: {
"Content-Type": "application/json",
"X-Api-Key": "YOUR_API_KEY"
},
body: JSON.stringify({
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phone": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
}
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"bytes"
"encoding/json"
)
func main() {
data := []byte(`{
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phone": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
}
}`)
req, err := http.NewRequest("POST", "https://api.sendkit.ai/v1/leads", bytes.NewBuffer(data))
if err != nil {
panic(err)
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("X-Api-Key", "YOUR_API_KEY")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
fmt.Println("Response Status:", resp.Status)
}
require 'net/http'
require 'json'
uri = URI('https://api.sendkit.ai/v1/leads')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['X-Api-Key'] = 'YOUR_API_KEY'
request.body = '{
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phone": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
}
}'
response = http.request(request)
puts response.body
{
"success": true,
"data": {
"_id": "665d4e5f6a7b8c9d0e1f2a3b",
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe",
"companyName": "Acme Corp",
"jobTitle": "VP of Sales",
"phoneNumber": "+1-555-123-4567",
"linkedinUrl": "https://linkedin.com/in/johndoe",
"city": "San Francisco",
"state": "CA",
"country": "US",
"tags": [
"vip",
"enterprise"
],
"customFields": {
"custom_industry": "SaaS",
"custom_revenue": "$10M"
},
"emailVerified": false,
"userId": "664f0a1b2c3d4e5f6a7b8c9d",
"workspaceId": "664f0a1b2c3d4e5f6a7b8c9e",
"createdAt": "2025-06-10T10:30:00.000Z",
"updatedAt": "2025-06-10T10:30:00.000Z"
}
}
{
"success": false,
"error": {
"code": "CONFLICT",
"message": "Lead with this email already exists"
},
"data": {
"_id": "665d4e5f6a7b8c9d0e1f2a3b",
"email": "john@acme.com",
"firstName": "John",
"lastName": "Doe"
}
}
POST
/v1/leads
POST
Base URLstring
Target server for requests. Edit to use your own host.
API Key (header: X-Api-Key)
X-Api-Keystring
RequiredPlatform API key (sk_user_...) or Workspace API key (sk_...)
Platform API key (sk_user_...) or Workspace API key (sk_...)
Content-Typestring
RequiredThe media type of the request body
Options: application/json
emailstring
RequiredLead email address (stored lowercase)
Format: email
phonestring
Phone number
linkedinUrlstring
LinkedIn profile URL
Format: uri
customFieldsobject
Arbitrary key-value custom fields. Keys without the custom_ prefix are accepted for backwards compatibility and are stored with that prefix. Keys cannot contain ..
Request Preview
Response
Response will appear here after sending the request
Authentication
header
X-Api-Keystring
RequiredAPI Key for authentication. Platform API key (sk_user_...) or Workspace API key (sk_...)
Body
application/json
emailstring
RequiredLead email address (stored lowercase)
phonestring
Phone number
linkedinUrlstring
LinkedIn profile URL
customFieldsobject
Arbitrary key-value custom fields. Keys without the custom_ prefix are accepted for backwards compatibility and are stored with that prefix. Keys cannot contain ..
Responses
Was this page helpful?