Klaviyo API

Marketing automation for e-commerce with email, SMS, and analytics.

Quick Facts

Overview

Klaviyo API is a e-commerce & crm apis provided by Klaviyo. Marketing automation for e-commerce with email, SMS, and analytics. This API is designed to help developers integrate ecommerce capabilities into their applications with minimal setup and maximum reliability.

The API supports API Key authentication, ensuring secure access to all endpoints. With a freemium pricing model, Klaviyo offers flexible options for projects of any size, from prototypes to enterprise deployments.

Klaviyo maintains comprehensive documentation, SDKs for popular programming languages, and active community support. The API is built on REST principles, returning JSON responses with standard HTTP status codes, making it straightforward to integrate into existing workflows.

Authentication

This API uses API Key authentication. Send your API key in the request header or as a query parameter. The exact method depends on the API specification.

Always store your credentials securely using environment variables or a secrets manager. Never commit API keys to version control or expose them in client-side code.

Code Samples

Python

import requests
import os

API_KEY = os.environ.get("API_KEY", "YOUR_API_KEY")
BASE_URL = "https://api.klaviyo.com"

headers = {
    "Authorization": f"Bearer {API_KEY}",
    "Content-Type": "application/json"
}

response = requests.get(f"{BASE_URL}/v1/resources", headers=headers)
print(response.status_code)
print(response.json())

JavaScript

const API_KEY = process.env.API_KEY || 'YOUR_API_KEY';
const BASE_URL = 'https://api.klaviyo.com';

const response = await fetch(`${BASE_URL}/v1/resources`, {
  headers: {
    'Authorization': `Bearer ${API_KEY}`,
    'Content-Type': 'application/json'
  }
});
const data = await response.json();
console.log(data);

cURL

curl -H "Authorization: Bearer $API_KEY" \
     -H "Content-Type: application/json" \
     https://api.klaviyo.com/v1/resources

Go

package main

import (
    "net/http"
    "fmt"
    "io"
    "os"
)

func main() {
    apiKey := os.Getenv("API_KEY")
    if apiKey == "" {
        apiKey = "YOUR_API_KEY"
    }
    req, _ := http.NewRequest("GET", "https://api.klaviyo.com/v1/resources", nil)
    req.Header.Set("Authorization", "Bearer " + apiKey)
    req.Header.Set("Content-Type", "application/json")
    resp, _ := http.DefaultClient.Do(req)
    defer resp.Body.Close()
    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

Pricing

The pricing model is freemium. Free tier with generous limits, paid plans for higher usage and premium features. Visit the provider’s pricing page at https://developers.klaviyo.com for current rates and detailed pricing information.

Use Cases

• Integration: Connect Klaviyo services to your application for seamless ecommerce functionality.
• Automation: Automate ecommerce workflows and reduce manual operations.
• Scaling: Handle growing ecommerce demands with Klaviyo’s robust infrastructure.

Related APIs

• Shopify API
• WooCommerce API
• BigCommerce API
• Magento API
• Salesforce API

Further Reading

• Integration Guide
• FAQ
• Glossary