convex-http-actions

To build secure webhook receivers in Convex, use HTTP actions to parse incoming requests, verify webhook signatures, and safely hand off validated data to internal mutations for downstream database updates.

Yes, you can create custom GET, POST, and OPTIONS API routes in Convex. HTTP actions handle request parsing, apply CORS headers, and format clean responses for authenticated browser-facing endpoints.

The best way to verify webhook signatures in a Convex HTTP action is to parse the incoming request payload, validate the cryptographic signature against the external service secret, and reject unverified events before running mutations.

You need Convex HTTP actions to expose custom endpoints for external integrations because they manage request parsing, authentication checks, signature verification, and safe routing to internal queries without leaking application logic.

Convex API routes return errors when calling mutations if request validation, authentication checks, or signature verification fail before the handoff, ensuring external service requests are safely parsed and authorized before database execution.