diff --git a/packages/hydrooj/src/handler/contest.ts b/packages/hydrooj/src/handler/contest.ts
index 34e5436f9..8f40ea16c 100644
--- a/packages/hydrooj/src/handler/contest.ts
+++ b/packages/hydrooj/src/handler/contest.ts
@@ -273,6 +273,11 @@ export class ContestPrintHandler extends ContestDetailBaseHandler {
 }
 
 export class ContestProblemListHandler extends ContestDetailBaseHandler {
+    @param('tid', Types.ObjectId)
+    async prepare(domainId: string, tid: ObjectId) {
+        if (contest.RULES[this.tdoc.rule].hidden) throw new ContestNotFoundError(domainId, tid);
+    }
+
     @param('tid', Types.ObjectId)
     async get(domainId: string, tid: ObjectId) {
         if (contest.isNotStarted(this.tdoc)) throw new ContestNotLiveError(domainId, tid);
@@ -663,6 +668,9 @@ export class ContestFileDownloadHandler extends ContestDetailBaseHandler {
     @param('noDisposition', Types.Boolean)
     @param('type', Types.Range(['public', 'private']), true)
     async get(domainId: string, tid: ObjectId, filename: string, noDisposition = false, type = 'private') {
+        if (contest.RULES[this.tdoc.rule].hidden && !contest.RULES[this.tdoc.rule].features?.includes('download')) {
+            throw new ContestNotFoundError(domainId, tid);
+        }
         if (type === 'private' && !this.user.own(this.tdoc) && !this.user.hasPerm(PERM.PERM_EDIT_CONTEST)) {
             if (!this.tsdoc?.attend) throw new ContestNotAttendedError(domainId, tid);
             if (!contest.isOngoing(this.tdoc) && !contest.isDone(this.tdoc)) throw new ContestNotLiveError(domainId, tid);
@@ -785,6 +793,9 @@ export class ContestScoreboardHandler extends ContestDetailBaseHandler {
     @param('tid', Types.ObjectId)
     @param('view', Types.String, true)
     async get(domainId: string, tid: ObjectId, viewId = 'default') {
+        if (contest.RULES[this.tdoc.rule].hidden && !contest.RULES[this.tdoc.rule].features?.includes('scoreboard')) {
+            throw new ContestNotFoundError(domainId, tid);
+        }
         if (!this.user.own(this.tdoc)) {
             if (!contest.canShowScoreboard.call(this, this.tdoc, true)) throw new ContestScoreboardHiddenError(tid);
             if (contest.isNotStarted(this.tdoc)) throw new ContestNotLiveError(domainId, tid);
diff --git a/packages/hydrooj/src/interface.ts b/packages/hydrooj/src/interface.ts
index 206412b18..f54a787f3 100644
--- a/packages/hydrooj/src/interface.ts
+++ b/packages/hydrooj/src/interface.ts
@@ -422,10 +422,13 @@ export interface ScoreboardConfig {
     lockAt?: Date;
 }
 
+export type Feature = 'scoreboard' | 'download';
+
 export interface ContestRule<T = any> {
     _originalRule?: Partial<ContestRule<T>>;
     TEXT: string;
     hidden?: boolean;
+    features?: Feature[];
     check: (args: any) => any;
     statusSort: Record<string, 1 | -1>;
     submitAfterAccept: boolean;
diff --git a/packages/hydrooj/src/model/contest.ts b/packages/hydrooj/src/model/contest.ts
index bd9f9aa0e..2a6964180 100644
--- a/packages/hydrooj/src/model/contest.ts
+++ b/packages/hydrooj/src/model/contest.ts
@@ -636,6 +636,7 @@ const ledo = buildContestRule({
 const homework = buildContestRule({
     TEXT: 'Assignment',
     hidden: true,
+    features: ['scoreboard', 'download'],
     check: () => { },
     submitAfterAccept: false,
     statusSort: { penaltyScore: -1, time: 1 },