frappe-syntax-whitelisted

To create a secure Frappe whitelisted method, define a Python function and apply the @frappe.whitelist decorator. You must include permission checks, validate inputs, and return structured JSON responses for production-safe client-server communication.

You can call whitelisted Frappe endpoints from the browser using frappe.call or frm.call. Pass typed arguments, handle JSON serialization properly, and manage the response data for seamless client-server integration.

For guest access in Frappe, configure the @frappe.whitelist decorator to allow guest users. Because public endpoints are vulnerable, you must implement rate limiting and safe error handling to prevent abuse and ensure production stability.

Yes, this approach supports version-aware type annotation workflows across Frappe v14-v16. It also allows you to enforce HTTP method restrictions and apply role-based permission checks for secure API design.

The best way to handle errors in Frappe whitelisted methods is to implement structured error logging alongside input validation. This ensures production-safe client-server communication and consistent JSON responses even when failures occur.