How do I connect an API to Lovable?

Describe the API and what you want it to do in Chat; Lovable will typically wire the call through a server function (Edge Function) so any API key stays off the client.

How do I connect Stripe?

Use Lovable's built-in Payments feature where available; for anything it doesn't cover, ask Lovable to wire Stripe through a server function that keeps your secret key off the client.

How do I accept payments?

Ask Lovable to add its built-in Payments feature (backed by Stripe) for checkout; it handles one-time payments and subscriptions without you managing raw API keys in the UI.

How do I create subscriptions?

Set up recurring prices in Stripe, then ask Lovable to create checkout for those prices and store each user's subscription status in your database so you can gate features accordingly.

How do I connect OpenAI?

For most cases, use Lovable AI (the built-in AI Gateway) so users don't need their own key; if you specifically need OpenAI, ask Lovable to store your API key as a secret and call it from a server function.

How do I connect Google Maps?

Get a Google Maps API key restricted to your domain, store it as a secret, and ask Lovable to embed the map component using that key server-side where possible.

How do I connect Google Analytics?

Ask Lovable to add your Google Analytics measurement ID as a script/tag in the site's head, or install it via Google Tag Manager for more flexibility.

How do I install Google Tag Manager?

Ask Lovable to add your GTM container snippet to the site's shared head and body, then manage individual tags (analytics, ads, pixels) from within Tag Manager itself.

How do I connect Meta Pixel?

Ask Lovable to add your Meta Pixel ID as a script in the site's shared head, and fire a PageView (or custom) event on each route change since Lovable apps are single-page apps.

How do I add a booking system?

For simple scheduling, embed an existing tool like Calendly; for a fully custom booking flow, ask Lovable to build a bookings table with availability logic backed by Lovable Cloud.

How do I embed Calendly?

Ask Lovable to embed your Calendly link using Calendly's inline widget or popup script on the relevant page.

How do I connect Shopify?

Connect via Shopify's Storefront API (for product/catalogue data) or link out to an existing Shopify checkout; Lovable doesn't replace Shopify's backend, it calls into it.

How do I connect an email marketing platform?

Ask Lovable to send new subscribers or events to your email platform's API (Mailchimp, ConvertKit, Klaviyo, etc.) via a server function using an API key stored as a secret.

How do I use webhooks?

Webhooks let external services notify your Lovable app when something happens; ask Lovable to create a server function URL as the webhook endpoint, and configure that URL in the third-party service.

How do I receive webhook data?

Ask Lovable for a server function that accepts incoming POST requests, verifies the sender where possible, then stores the payload in your database.

How do I securely call third-party APIs?

Keep every API key and secret server-side in a Lovable Cloud/Supabase server function, never in front-end code, and have your UI call that function instead of the third-party API directly.

Why is my API working in preview but not production?

This is usually a missing secret, environment mismatch, or a domain restriction that only applies once the app is published — check that every secret and allowed-domain setting has been applied to production, not just preview.

How do I connect an external CRM?

Last checked 31 Aug 2026

Short answer

Ask Lovable to build a server function that sends or fetches records via your CRM's REST API (HubSpot, Salesforce, Pipedrive, etc.), using an API key stored as a secret.

The general approach

Most CRMs (HubSpot, Salesforce, Pipedrive, Zoho) expose a REST API and issue an API key or OAuth token. The Lovable-side pattern is the same regardless of which CRM:

Get an API key/token from your CRM's developer or integrations settings.
Ask Lovable to store it as a secret.
Ask Lovable to build a server function that calls the CRM's API.
Trigger that function from the relevant place in your app — usually a form submission.

"When someone submits the contact form, send their name, email and message to HubSpot as a new contact, using my HubSpot API key stored as a secret."

Two directions of sync

Push: your app sends new leads/contacts into the CRM (most common — contact forms, signups, orders).
Pull: your app reads CRM data to display back to users (less common, needs more careful rate-limit and caching thought).

Handling duplicates and updates

Ask Lovable to check whether a contact already exists (by email) before creating a new one, and update instead of duplicating — most CRM APIs support an upsert-style call or a search-then-create pattern.

What usually goes wrong

API key exposed in front-end code — always route through a server function.
Field mapping mismatches (your form field names don't match the CRM's expected property names), causing silent failures or blank fields in the CRM.
Rate limits on the CRM's API causing failures during traffic spikes — ask for basic retry/error handling.
OAuth-based CRMs (Salesforce, some HubSpot scopes) needing token refresh logic, which is more involved than a static API key — flag this to Lovable up front if your CRM uses OAuth.

For CRMs with complex OAuth flows or custom objects, PromptSites.com can build a reliable integration rather than a fragile one-off.

Sources

Connect your app to GitHub API

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GuideHow to Connect an External APICall third-party APIs from server code, handle their errors properly, and never expose your keys.