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Lovable now lets you integrate Cello user referrals entirely through chat. Just ask Lovable to “Add user referrals to your app” and it will do the rest - no manual coding required.

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Prerequisites

Before integrating Cello, ensure the following prerequisites are met:
  • The project must be connected to Supabase. Learn more about Supabase
  • User signup and authentication via Supabase is functional
  • Stripe subscription flow is functional
  • You have a Cello account and API keys at hand.
Make sure to use Cello Sandbox environment when developing and testing

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Cello user referrals integration (No‑code chat flow)

Lovable now does all Cello integration steps for you. Once your Cello API keys and Secrets are configured via the in-chat Add API Key form and your project meets all the prerequisits, simply tell Lovable what you need.
For a step-by-step technical implementation (source of truth + acceptance criteria), follow the detailed guide:
1

Step 1

Prep your project
  • Signup and authentication flow with Supabase is functional
  • Stripe subsctiption flow is functional
  • Cello API keys are handy
2

Step 2

Add Cello Webhook Endpoint to Stripe
  • Get your webhook URL from Cello Portal
  • Add a Webhook endpoint in Stripe (Log into your Stripe Dashboard -> Go to Developer Mode -> Add a Webhook endpoint and enter endpoint URL -> Select the events to send -> Click “Add endpoint”)
  • Secure the Webhook with “Signing secret”
Events to send:
  • charge.refunded, charge.succeeded, charge.updated
  • customer.created, customer.deleted, customer.updated
  • customer.subscription.created, customer.subscription.deleted, customer.subscription.updated
  • invoice.paid
See Stripe Webhook Integration for more details.
3

Step 3

Prompt Lovable to add User Referrals to your appSwitch Lovable to Plan mode, then paste this prompt (includes the detailed guide):
I now want to add user referrals. I chose platform Cello for this.

I added a Cello integration guide according to which you should do the implementation. parsed the documentation more carefully from the start rather than assuming standard patterns would work. create a thorough implementation plan based on guidance, patterns and AC from the provided guide. Don't skip any content, it is all relevant

Guide: https://docs.cello.so/resources/cello-lovable-detailed-integration
Lovable asks you guiding questions and creates an implementation plan based on your answers.
4

Step 4

Confirm executing the planReview the plan carefully. If it looks correct, tell Lovable to proceed and start implementing it.
5

Step 5

Publish & TestYou cannot try the full end-to-end flow in the Preview mode. Publish your changes to test.If everything was implemented correctly, you should see events coming in to Cello Dashboard.