Lovable Stripe & APIs Failing?
The card gets charged but the account stays free, the webhook never fires, or your API call is blocked by CORS in production. These integration bugs leak revenue — here are the exact fixes.
Stripe & API integration fixes
Payment, webhook, and API failures with the exact symptom, the root cause, and copy-paste Edge Function code — including idempotent activation and async signature verification Lovable's generated code gets wrong.
Lovable Stripe Webhook Not Firing
Stripe charges the card but the account still shows free tier? Your webhook is broken. Here's the exact checklist to find and fix it.
Read the guide →Integrations & APIsStripe Charged the Card but the Subscription Never Activated
Card charged but the account stays free? Your webhook activation never ran. Here's the verified handler that upgrades the user on checkout.session.completed.
Read the guide →Integrations & APIsFix "SubtleCryptoProvider cannot be used in a synchronous context" in Lovable Stripe Webhooks
Your Lovable Stripe webhook throws SubtleCryptoProvider cannot be used in a synchronous context. Cause: constructEvent in Deno. Fix it with constructEventAsync.
Read the guide →Integrations & APIsFix the Lovable CORS Error When an External API Is Blocked in Production
Access to fetch blocked by CORS policy when calling an external API from your Lovable app? Here is why it happens and the proxy fix that ships safely.
Read the guide →Integrations & APIsLovable Stripe Works After Deploy but Fails in Preview
Stripe works after you deploy but not in Lovable preview? Test/live key mismatch and an unreachable webhook URL are why. Here is the correct test setup.
Read the guide →Integrations & APIsLovable Locks You to One Payment Provider Per Project
Lovable locks each project to one payment provider, with no dunning and AI flows wired to that gateway. Here is why it is a migration trigger.
Read the guide →Integrations & APIsThe Lovable Shopify Integration: What Works and What Breaks
A Lovable Shopify integration guide: wire the Storefront and Admin APIs, CORS, webhooks, and auth the right way, and see what breaks in production.
Read the guide →Integrations & APIsLovable MCP: Connecting MCP Servers to Your App and Workflow
Lovable MCP explained: connect a custom MCP server as a chat connector, or drive Lovable from an external AI client via mcp.lovable.dev over OAuth.
Read the guide →Stuck on a Lovable decision? Talk it through with a senior engineer.
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