External API integrations

Cadrant can connect to any external API: payments, email, CRM, AI, Slack, business tools, and more. There is no closed list of integrations. Just describe what you want in the chat.

Cadrant generates the server-side logic you need (usually via an Edge Function) and guides you through wiring the service: create an account with the provider, get a token or API key, then save it in your project.

How it works

1. Ask for the integration in chat, for example: "Connect Stripe for subscriptions" or "Send an email via Resend on every signup".
2. Cadrant generates the API call code and configures secret references on the server.
3. Create an account with the external service and get your token or API key.
4. Add that secret as an environment variable in the Cadrant project dashboard.
5. Test the flow: the app calls server logic, which uses the token without ever exposing it in the browser.

Saving a token (environment variables)

Tokens and API keys are stored in the project's Environment panel. They are available to server code only, never in the frontend.

1. Open your project, then the Database panel.
2. Open the Environment tab.
3. Add a variable as KEY = value, for example STRIPE_SECRET_KEY = sk_live_....
4. Save. The key is immediately available to your Edge Functions.

Details about the Environment panel are in Environment variables.

Example integrations

• Payments: Stripe, PayPal.
• Transactional email: Resend, SendGrid.
• AI: OpenAI, Anthropic.
• Notifications and CRM: Slack, webhooks, internal tools.
• Any REST API or service that uses a secret key.

For server-side details, see also Edge Functions.