{"endpoint":"/api/webhook","version":"1.0","description":"Đăng ký webhook nhận callback khi VBPL có thay đổi (sửa đổi, bãi bỏ, thay thế).","docs":"https://vietlex.vn/cho-ai#webhook","methods":{"POST":{"description":"Đăng ký subscription","body":{"url":"https://your-domain/hook","events":["vbpl.update","vbpl.bai_bo"],"vbpl_id":"doc_xxx (optional)","secret":"your-secret"}},"GET":{"description":"Xem trạng thái subscription","query":{"id":"whk_xxx","secret":"your-secret"}},"DELETE":{"description":"Huỷ subscription","query":{"id":"whk_xxx","secret":"your-secret"}}},"auth":"HMAC-SHA256 X-Hub-Signature-256 (GitHub-style)","data_license":"CC BY 4.0"}