diff --git a/docs/api-viewer/PBSAPI.js b/docs/api-viewer/PBSAPI.js
index b728e302..60296a28 100644
--- a/docs/api-viewer/PBSAPI.js
+++ b/docs/api-viewer/PBSAPI.js
@@ -110,6 +110,45 @@ Ext.onReady(function() {
 	return path.replace(/^.*\/_upgrade_(\/)?/, "/");
     };
 
+    var permission_text = function(permission) {
+	let permhtml = "";
+
+	if (permission.user) {
+	    if (!permission.description) {
+		if (permission.user === 'world') {
+		    permhtml += "Accessible without any authentication.";
+		} else if (permission.user === 'all') {
+		    permhtml += "Accessible by all authenticated users.";
+		} else {
+		    permhtml += 'Onyl accessible by user "' +
+			permission.user + '"';
+		}
+	    }
+	} else if (permission.check) {
+	    permhtml += "<pre>Check: " +
+		Ext.htmlEncode(Ext.JSON.encode(permission.check))  + "</pre>";
+	} else if (permission.userParam) {
+	    permhtml += `<div>Check if user matches parameter '${permission.userParam}'`;
+	} else if (permission.or) {
+	    permhtml += "<div>Or<div style='padding-left: 10px;'>";
+	    Ext.Array.each(permission.or, function(sub_permission) {
+		permhtml += permission_text(sub_permission);
+	    })
+	    permhtml += "</div></div>";
+	} else if (permission.and) {
+	    permhtml += "<div>And<div style='padding-left: 10px;'>";
+	    Ext.Array.each(permission.and, function(sub_permission) {
+		permhtml += permission_text(sub_permission);
+	    })
+	    permhtml += "</div></div>";
+	} else {
+	    //console.log(permission);
+	    permhtml += "Unknown systax!";
+	}
+
+	return permhtml;
+    };
+
     var render_docu = function(data) {
 	var md = data.info;
 
@@ -339,28 +378,13 @@ Ext.onReady(function() {
 			permhtml += "<div style='white-space:pre-wrap;padding-bottom:10px;'>" +
 			    Ext.htmlEncode(info.permissions.description) + "</div>";
 		    }
+		    permhtml += permission_text(info.permissions);
+		}
 
-		    if (info.permissions.user) {
-			if (!info.permissions.description) {
-			    if (info.permissions.user === 'world') {
-				permhtml += "Accessible without any authentication.";
-			    } else if (info.permissions.user === 'all') {
-				permhtml += "Accessible by all authenticated users.";
-			    } else {
-				permhtml += 'Onyl accessible by user "' +
-				    info.permissions.user + '"';
-			    }
-			}
-		    } else if (info.permissions.check) {
-			permhtml += "<pre>Check: " +
-			    Ext.htmlEncode(Ext.JSON.encode(info.permissions.check))  + "</pre>";
-		    } else {
-			permhtml += "Unknown systax!";
-		    }
-		}
-		if (!info.allowtoken) {
-		    permhtml += "<br />This API endpoint is not available for API tokens."
-		}
+		// we do not have this information for PBS api
+		//if (!info.allowtoken) {
+		//    permhtml += "<br />This API endpoint is not available for API tokens."
+		//}
 
 		sections.push({
 		    title: 'Required permissions',
diff --git a/src/bin/docgen.rs b/src/bin/docgen.rs
index 8a60f3a0..1499fee0 100644
--- a/src/bin/docgen.rs
+++ b/src/bin/docgen.rs
@@ -9,6 +9,9 @@ use proxmox::{
             SchemaPropertyEntry,
             ApiStringFormat,
         },
+        router::{
+             ApiAccess,
+        },
         format::{
             dump_enum_properties,
             dump_section_config,
@@ -18,12 +21,16 @@ use proxmox::{
         ApiHandler,
         Router,
         SubRoute,
+        Permission,
     },
 };
 
 use proxmox_backup::{
     api2,
-    config,
+    config::{
+        self,
+        acl::PRIVILEGES,
+    },
 };
 
 fn get_args() -> (String, Vec<String>) {
@@ -235,6 +242,51 @@ pub fn dump_property_schema<I>(
     data
 }
 
+fn dump_api_permission(permission: &Permission) -> Value {
+
+    match permission {
+        Permission::Superuser => json!({ "user": "root@pam" }),
+        Permission::User(user) => json!({ "user": user }),
+        Permission::Anybody => json!({ "user": "all" }),
+        Permission::World => json!({ "user": "world" }),
+        Permission::UserParam(param) => json!({ "userParam": param }),
+        Permission::Group(group) => json!({ "group": group }),
+        Permission::WithParam(param, sub_permission) => {
+            json!({
+                "withParam": {
+                    "name": param,
+                    "permissions": dump_api_permission(sub_permission),
+                },
+            })
+        }
+        Permission::Privilege(name, value, partial) => {
+
+            let mut privs = Vec::new();
+            for (name, v) in PRIVILEGES {
+                if (value & v) != 0 {
+                    privs.push(name.to_string());
+                }
+            }
+
+            json!({
+                "check": {
+                    "path": name,
+                    "privs": privs,
+                    "partial": partial,
+                }
+            })
+        }
+        Permission::And(list) => {
+            let list: Vec<Value> = list.iter().map(|p| dump_api_permission(p)).collect();
+            json!({ "and": list })
+        }
+        Permission::Or(list) => {
+            let list: Vec<Value> = list.iter().map(|p| dump_api_permission(p)).collect();
+            json!({ "or": list })
+        }
+    }
+}
+
 fn dump_api_method_schema(
     method: &str,
     api_method: &ApiMethod,
@@ -251,6 +303,19 @@ fn dump_api_method_schema(
     }
     data["returns"] = returns;
 
+    match api_method.access {
+        ApiAccess { description: None, permission: Permission::Superuser } => {
+            // no need to output default
+        }
+        ApiAccess { description, permission } => {
+            let mut permissions = dump_api_permission(permission);
+            if let Some(description) = description {
+                permissions["description"] = description.into();
+            }
+            data["permissions"] = permissions;
+        }
+    }
+
     let mut method = method;
 
     if let ApiHandler::AsyncHttp(_) = api_method.handler {