API Integration Guide: Connect Kulcho to Your Digital Ecosystem

TL;DR: The Kulcho API allows you to programmatically manage your audience and subscriptions. This guide covers the fundamentals of our RESTful endpoints, including secure Bearer token authentication, user synchronization, and implementing webhooks for real-time event handling in your custom stack.

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A membership business rarely lives in isolation. To build a truly seamless experience, you need to connect your platform to your existing tech stack—CRM, email marketing, or custom mobile applications.

The Kulcho API is a powerful RESTful interface designed to give developers full programmatic control over their audience infrastructure.

Getting Started: Authentication

Our interface utilizes standard Bearer token authentication. Each request to our endpoints MUST include your secure secret key in the authorization header.

# Example authentication header
Authorization: Bearer YOUR_SECRET_KEY

Security Best Practice: Never expose your secret keys in client-side code or public repositories. Always use environment variables on your backend to handle communication with our platform.

Core API Endpoints

We provide several high-level endpoints to manage the lifecycle of your members and their data.

1. User Management

Retrieve user profiles, update metadata, or programmatically create new accounts.

• GET /v1/users - List all registered users
• GET /v1/users/{id} - Retrieve a specific user profile
• PATCH /v1/users/{id} - Update user preferences or attributes

2. Subscription Handling

Manage tiers and access levels directly from your own application logic.

• GET /v1/subscriptions - View active member tiers
• POST /v1/subscriptions/cancel - Programmatically handle churn prevention flows

Real-Time Synchronization via Webhooks

While the API is excellent for pulling data, webhooks are essential for pushing updates to your ecosystem in real-time. Use webhooks to trigger automated workflows when:

• A new member joins a tier.
• A payment fails (critical for dunning flows).
• A subscription is cancelled.

Each webhook payload is sent as a signed JSON POST request, ensuring that the data originates from our servers and hasn’t been intercepted.

Building Custom Frontend Experiences

For agencies building headless experiences, our endpoints enable you to utilize Kulcho as a backend memberships service while maintaining 100% control over the frontend UX.

By fetching content and user states via our interface, you can build custom dashboards, personalized course views, and unique community interactions that aren’t limited by standard templates.

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Frequently Asked Questions

Does the Kulcho API support GraphQL? Currently, our primary interface is a RESTful API. However, we are exploring GraphQL support for complex data queries in future releases to simplify headless CMS integrations.

What are the rate limits for the API? To ensure stability for all customers, we implement a fair-use rate limit. Standard plans allow for 100 requests per minute. Enterprise customers can request higher limits for large-scale data migrations or high-traffic applications.

Can I sync Kulcho data with my CRM (like HubSpot)? Yes. By utilizing our Webhooks or our /v1/users endpoint, you can automatically sync member data and subscription status with any major CRM or email marketing platform in real-time.

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