100% Free - No API Limits

OpenAPI for Any App You Build

Add referral tracking to your app in minutes. Our free REST API works with any platform - whether you're building with Replit Agent, Lovable, Claude, or coding from scratch. Track attributions, record conversions, manage referrals, and automate rewards. No API call limits, no premium tiers, no hidden fees. You only pay when you pay rewards.

Works With Your Favorite AI Tools

Building with AI? Our API integrates seamlessly with popular AI coding assistants. Copy-paste prompts are available in your admin panel after signup.

Replit Agent

Ask Replit Agent to add referral tracking. Our setup guide includes ready-to-use prompts that handle attribution, events, and webhooks automatically.

Lovable

Integrate with Lovable in minutes. Our documentation provides step-by-step instructions that any AI assistant can follow to implement tracking.

Claude & ChatGPT

Works with any AI coding assistant. Clear API documentation and examples make it easy for AI to implement the full referral tracking flow.

What You Can Build

Attribution Tracking

Track which referrer brought each customer. Store referral codes from URL params and link them to new signups.

Conversion Events

Record purchases, subscriptions, or any conversion event. Automatically trigger rewards for successful referrals.

Referral CRUD

Create, read, update, and list referrals. Update stages as leads progress through your sales pipeline.

Webhook Notifications

Receive real-time notifications when referrals are created, updated, or rewards are issued. HMAC-signed for security.

Member Management

Query member data, get referral stats, and check reward balances through the API.

Multi-Program Support

Run multiple referral programs with different reward structures, all managed through a single API.

How to Get Started

Create Your Free Account

Sign up for Referral Nexus - no card needed to sign up. Create a program and invite your first referral partners.

Generate Your API Key

Go to Admin, then Integrations, then Public API. Click "Create API Key" and save it securely - it's only shown once.

Integrate with Your App

Use our AI prompts above, or follow the setup guide in your admin panel. Capture referral codes, track signups, and record conversions.

Set Up Webhooks (Optional)

Configure a webhook URL to receive real-time notifications. We sign all payloads with HMAC-SHA256 for security.

Start Rewarding Referrers

When conversions happen, rewards are created automatically. Pay via PayPal or mark as manually paid.

Frequently Asked Questions

Is the OpenAPI really free?

Yes! The OpenAPI is completely free to use. There are no API call limits, no premium tiers, and no hidden fees. You only pay the small platform fee when you actually pay rewards to your referrers.

How do I get my API key?

Sign up for a free Referral Nexus account, navigate to Admin, then Integrations, then Public API. Click "Create API Key" and save it securely. The full key is only shown once at creation time.

Can I use this with apps built by AI?

Absolutely! We provide ready-to-use prompts for Replit Agent, Lovable, and Claude. Just paste the prompt and your AI assistant will handle the integration automatically.

What endpoints are available?

The API includes endpoints for attribution tracking (/v1/attributions/resolve), event recording (/v1/events), and full referral CRUD (/v1/referrals). Full documentation with examples is in your admin panel.

How do webhooks work?

Configure a webhook URL in your admin panel. We send POST requests for events like referral.created, referral.updated, reward.created, and attribution.created. All payloads are signed with HMAC-SHA256 using your webhook secret.

What programming languages are supported?

Any language that can make HTTP requests! The API uses standard REST conventions with JSON payloads. It works with JavaScript, Python, Ruby, PHP, Go, or any other language.

Start Building for Free

Get your API key in under a minute. No credit card required.

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