NexusKit Documentation

Create an account, enable services, generate API keys, and send your first request in minutes.

Explore each module: Contact, Booking, QR, Onboarding, and Invoicing. See features, use cases, and examples.

Full endpoint reference, authentication details, rate limits, error codes, and webhook payloads.

Contact

API form capture with email notifications, Turnstile captcha, and dashboard inbox.

Booking

Scheduling and availability management via API. Let customers book time slots directly.

Links & QR

Generate short links and QR codes with tracking. Embed in print, email, or product.

Onboarding

Guided multi-step flows with progress tracking and state persistence.

Invoices

Create, send, and track invoices via API. Status management and export built in.

API Reference

All endpoints, request/response schemas, authentication, and error handling.

Webhooks

HMAC-signed event payloads. Subscribe to specific events or use wildcard routing.

Fair Use

Rate limits, monthly caps, and guidelines for staying within free-tier bounds.