diff --git a/imagent-ui/app/components/LeaderboardBoard.tsx b/imagent-ui/app/components/LeaderboardBoard.tsx
index e696844..e5e3e07 100644
--- a/imagent-ui/app/components/LeaderboardBoard.tsx
+++ b/imagent-ui/app/components/LeaderboardBoard.tsx
@@ -298,6 +298,14 @@ function HistoryPanel({
   query: string;
   totalEntries: number;
 }) {
+  const trimmedQuery = query.trim();
+  const filtersActive = filter !== "all" || trimmedQuery.length > 0;
+  const activeFilterLabel = historyFilters.find((item) => item.id === filter)?.label ?? "All";
+  const clearFilters = () => {
+    onFilterChange("all");
+    onQueryChange("");
+  };
+
   return (
     <section className="leaderboard-history-panel" aria-label="Merged and closed PR history">
       <div className="leaderboard-history-head">
@@ -310,6 +318,16 @@ function HistoryPanel({
             onChange={(event) => onQueryChange(event.target.value)}
             placeholder="Search PR, agent, contributor"
           />
+          {trimmedQuery ? (
+            <button
+              aria-label="Clear search"
+              className="leaderboard-history-search-clear"
+              onClick={() => onQueryChange("")}
+              type="button"
+            >
+              <X size={14} />
+            </button>
+          ) : null}
         </label>
       </div>
 
@@ -325,8 +343,26 @@ function HistoryPanel({
             {item.label}
           </button>
         ))}
+        {filtersActive ? (
+          <button
+            aria-label="Clear history filters and search"
+            className="leaderboard-history-clear"
+            onClick={clearFilters}
+            type="button"
+          >
+            Clear
+          </button>
+        ) : null}
       </div>
 
+      {filtersActive ? (
+        <p aria-live="polite" className="leaderboard-history-summary">
+          {totalEntries === 0
+            ? `No matches for ${activeFilterLabel}${trimmedQuery ? ` · “${trimmedQuery}”` : ""}`
+            : `${totalEntries} match${totalEntries === 1 ? "" : "es"} · ${activeFilterLabel}${trimmedQuery ? ` · “${trimmedQuery}”` : ""}`}
+        </p>
+      ) : null}
+
       <div className="leaderboard-history-list custom-scrollbar">
         {entries.length ? entries.map((entry) => (
           <HistoryItem
@@ -338,8 +374,17 @@ function HistoryPanel({
         )) : (
           <div className="leaderboard-history-empty">
             <History size={20} />
-            <strong>No Resolved PRs</strong>
-            <p>No merged or closed pull requests match this view.</p>
+            <strong>{filtersActive ? "No Matching PRs" : "No Resolved PRs"}</strong>
+            <p>
+              {filtersActive
+                ? "Nothing in the archive matches this filter or search. Clear the controls to see the full history."
+                : "No merged or closed pull requests match this view."}
+            </p>
+            {filtersActive ? (
+              <button className="leaderboard-history-empty-action" onClick={clearFilters} type="button">
+                Clear filters
+              </button>
+            ) : null}
           </div>
         )}
       </div>
diff --git a/imagent-ui/app/styles.css b/imagent-ui/app/styles.css
index ccb8756..f12e9ad 100644
--- a/imagent-ui/app/styles.css
+++ b/imagent-ui/app/styles.css
@@ -11856,6 +11856,29 @@ body .leaderboard-history-search input::placeholder {
   font-family: var(--font-jetbrains), "JetBrains Mono", ui-monospace, monospace;
 }
 
+body .leaderboard-history-search-clear {
+  align-items: center;
+  background: rgba(0, 226, 251, 0.08);
+  border: 1px solid rgba(99, 222, 255, 0.18);
+  border-radius: 999px;
+  color: var(--leaderboard-cyan);
+  cursor: pointer;
+  display: inline-flex;
+  flex: 0 0 auto;
+  height: 22px;
+  justify-content: center;
+  margin-left: auto;
+  padding: 0;
+  width: 22px;
+}
+
+body .leaderboard-history-search-clear:hover,
+body .leaderboard-history-search-clear:focus-visible {
+  background: rgba(0, 226, 251, 0.16);
+  border-color: rgba(0, 226, 251, 0.42);
+  outline: none;
+}
+
 body .leaderboard-history-filters {
   align-items: center;
   border-bottom: 1px solid rgba(99, 222, 255, 0.1);
@@ -11888,6 +11911,30 @@ body .leaderboard-history-filters button.active {
   outline: none;
 }
 
+body .leaderboard-history-clear {
+  background: rgba(255, 120, 120, 0.08) !important;
+  border-color: rgba(255, 140, 140, 0.28) !important;
+  color: #ffb4b4 !important;
+  margin-left: auto;
+}
+
+body .leaderboard-history-clear:hover,
+body .leaderboard-history-clear:focus-visible {
+  background: rgba(255, 120, 120, 0.16) !important;
+  border-color: rgba(255, 140, 140, 0.48) !important;
+  color: #ffd0d0 !important;
+}
+
+body .leaderboard-history-summary {
+  color: var(--leaderboard-muted);
+  font-family: var(--font-jetbrains), "JetBrains Mono", ui-monospace, monospace;
+  font-size: 10px;
+  font-weight: 700;
+  letter-spacing: 0.02em;
+  margin: 0;
+  padding: 8px 16px 0;
+}
+
 body .leaderboard-history-list {
   display: grid;
   min-height: 258px;
@@ -12087,6 +12134,27 @@ body .leaderboard-history-empty strong {
 body .leaderboard-history-empty p {
   font-size: 12px;
   margin: 6px 0 0;
+  max-width: 34ch;
+}
+
+body .leaderboard-history-empty-action {
+  background: rgba(0, 226, 251, 0.1);
+  border: 1px solid rgba(0, 226, 251, 0.34);
+  border-radius: 999px;
+  color: #ffffff;
+  cursor: pointer;
+  font-family: var(--font-jetbrains), "JetBrains Mono", ui-monospace, monospace;
+  font-size: 10px;
+  font-weight: 850;
+  margin-top: 14px;
+  min-height: 32px;
+  padding: 0 14px;
+}
+
+body .leaderboard-history-empty-action:hover,
+body .leaderboard-history-empty-action:focus-visible {
+  background: rgba(0, 226, 251, 0.18);
+  outline: none;
 }
 
 body .leaderboard-history-pagination {